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No commits in common. "java" and "main" have entirely different histories.
3
01_Intellij_Java_universal_20240419/.idea/.gitignore
generated
vendored
3
01_Intellij_Java_universal_20240419/.idea/.gitignore
generated
vendored
@ -1,3 +0,0 @@
|
||||
# Default ignored files
|
||||
/shelf/
|
||||
/workspace.xml
|
||||
@ -1,6 +0,0 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK">
|
||||
<output url="file://$PROJECT_DIR$/out" />
|
||||
</component>
|
||||
</project>
|
||||
@ -1,8 +0,0 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="ProjectModuleManager">
|
||||
<modules>
|
||||
<module fileurl="file://$PROJECT_DIR$/01_Intellij_Java_universal_20240419.iml" filepath="$PROJECT_DIR$/01_Intellij_Java_universal_20240419.iml" />
|
||||
</modules>
|
||||
</component>
|
||||
</project>
|
||||
@ -1,6 +0,0 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="VcsDirectoryMappings">
|
||||
<mapping directory="$PROJECT_DIR$/.." vcs="Git" />
|
||||
</component>
|
||||
</project>
|
||||
@ -1,12 +0,0 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<module type="JAVA_MODULE" version="4">
|
||||
<component name="NewModuleRootManager" inherit-compiler-output="true">
|
||||
<exclude-output />
|
||||
<content url="file://$MODULE_DIR$">
|
||||
<sourceFolder url="file://$MODULE_DIR$/untitled/ch11" isTestSource="false" />
|
||||
<sourceFolder url="file://$MODULE_DIR$/untitled/src" isTestSource="false" />
|
||||
</content>
|
||||
<orderEntry type="inheritedJdk" />
|
||||
<orderEntry type="sourceFolder" forTests="false" />
|
||||
</component>
|
||||
</module>
|
||||
@ -1 +0,0 @@
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||||
776-6761-3633-7047-9651-3662-3256-9614-7203-1094-8468-463-6635-460-9999
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||||
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@ -1,29 +0,0 @@
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||||
### IntelliJ IDEA ###
|
||||
out/
|
||||
!**/src/main/**/out/
|
||||
!**/src/test/**/out/
|
||||
|
||||
### Eclipse ###
|
||||
.apt_generated
|
||||
.classpath
|
||||
.factorypath
|
||||
.project
|
||||
.settings
|
||||
.springBeans
|
||||
.sts4-cache
|
||||
bin/
|
||||
!**/src/main/**/bin/
|
||||
!**/src/test/**/bin/
|
||||
|
||||
### NetBeans ###
|
||||
/nbproject/private/
|
||||
/nbbuild/
|
||||
/dist/
|
||||
/nbdist/
|
||||
/.nb-gradle/
|
||||
|
||||
### VS Code ###
|
||||
.vscode/
|
||||
|
||||
### Mac OS ###
|
||||
.DS_Store
|
||||
3
01_Intellij_Java_universal_20240419/untitled/.idea/.gitignore
generated
vendored
3
01_Intellij_Java_universal_20240419/untitled/.idea/.gitignore
generated
vendored
@ -1,3 +0,0 @@
|
||||
# 默认忽略的文件
|
||||
/shelf/
|
||||
/workspace.xml
|
||||
@ -1,6 +0,0 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK">
|
||||
<output url="file://$PROJECT_DIR$/out" />
|
||||
</component>
|
||||
</project>
|
||||
@ -1,8 +0,0 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="ProjectModuleManager">
|
||||
<modules>
|
||||
<module fileurl="file://$PROJECT_DIR$/Application.iml" filepath="$PROJECT_DIR$/Application.iml" />
|
||||
</modules>
|
||||
</component>
|
||||
</project>
|
||||
@ -1,6 +0,0 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="VcsDirectoryMappings">
|
||||
<mapping directory="$PROJECT_DIR$/../.." vcs="Git" />
|
||||
</component>
|
||||
</project>
|
||||
@ -1,12 +0,0 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<module type="JAVA_MODULE" version="4">
|
||||
<component name="NewModuleRootManager" inherit-compiler-output="true">
|
||||
<exclude-output />
|
||||
<content url="file://$MODULE_DIR$">
|
||||
<sourceFolder url="file://$MODULE_DIR$/ch11" isTestSource="false" />
|
||||
<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
|
||||
</content>
|
||||
<orderEntry type="inheritedJdk" />
|
||||
<orderEntry type="sourceFolder" forTests="false" />
|
||||
</component>
|
||||
</module>
|
||||
@ -1,31 +0,0 @@
|
||||
package ch11_56.test1;
|
||||
|
||||
// 泛型
|
||||
|
||||
public class App11_1 <T>{
|
||||
private T obj;
|
||||
|
||||
public static void main (String[] args){
|
||||
// 两种方式均可
|
||||
// 实例化 name 对象
|
||||
App11_1<String> name = new App11_1<>();
|
||||
/* App11_1<String> name = new App11_1<String>(); */
|
||||
|
||||
// 实例化 age 对象
|
||||
App11_1<Integer> age = new App11_1<>();
|
||||
|
||||
name.setObj("Todd");
|
||||
System.out.println("Name: " + name.getObj());
|
||||
|
||||
age.setObj(114514);
|
||||
System.out.println("Age: " + age.getObj());
|
||||
}
|
||||
|
||||
public T getObj(){
|
||||
return obj;
|
||||
}
|
||||
|
||||
public void setObj(T obj){
|
||||
this.obj = obj;
|
||||
}
|
||||
}
|
||||
@ -1 +0,0 @@
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||||
文件已被成功创建!又添加了一行文字!
|
||||
@ -1,39 +0,0 @@
|
||||
/*
|
||||
* Function: 创建 盒子 类
|
||||
* Date: 2024 04 18
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240418;
|
||||
|
||||
public class box {
|
||||
private double length;
|
||||
private double width;
|
||||
private double height;
|
||||
|
||||
public void setBox_length (double l){
|
||||
this.length = l;
|
||||
}
|
||||
public void setBox_width (double w){
|
||||
this.width = w;
|
||||
}
|
||||
public void setBox_height (double h){
|
||||
this.height = h;
|
||||
}
|
||||
public void printVolume(){
|
||||
System.out.println(height * width * length);
|
||||
}
|
||||
|
||||
public static void main (String[] args){
|
||||
// 实例化 box 类
|
||||
box b_1 = new box();
|
||||
|
||||
// 赋值
|
||||
b_1.setBox_height(5);
|
||||
b_1.setBox_length(2);
|
||||
b_1.setBox_width(3);
|
||||
|
||||
// 输出体积
|
||||
b_1.printVolume();
|
||||
}
|
||||
}
|
||||
@ -1,46 +0,0 @@
|
||||
/*
|
||||
* Function: 创建类计算两个虚数和
|
||||
* Date: 2024 04 18
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240418;
|
||||
public class complex {
|
||||
// 实部
|
||||
private int realPart;
|
||||
// 虚部
|
||||
private int imaginePart;
|
||||
|
||||
// 无参构造方法
|
||||
public complex() {
|
||||
this.realPart = 0;
|
||||
this.imaginePart = 0;
|
||||
}
|
||||
|
||||
// 有参构造方法
|
||||
public complex (int r, int i){
|
||||
this.realPart = r;
|
||||
this.imaginePart = i;
|
||||
}
|
||||
|
||||
// 计算两个虚数和
|
||||
public complex complexAdd (complex a){
|
||||
complex temp = new complex();
|
||||
temp.realPart = this.realPart + a.realPart;
|
||||
temp.imaginePart = this.imaginePart + a.imaginePart;
|
||||
return temp;
|
||||
}
|
||||
|
||||
// 返回计算结果 String
|
||||
public String ToString (){
|
||||
return this.realPart + " + " + this.imaginePart + "i";
|
||||
}
|
||||
|
||||
public static void main (String[] args){
|
||||
complex c_1 = new complex(1,2);
|
||||
complex c_2 = new complex(2,3);
|
||||
complex c_out = c_1.complexAdd(c_2);
|
||||
|
||||
System.out.println(c_out.ToString());
|
||||
}
|
||||
}
|
||||
@ -1,89 +0,0 @@
|
||||
/*
|
||||
* Function: 学生类
|
||||
* Date: 2024 04 18
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240418;
|
||||
|
||||
import java.util.Objects;
|
||||
|
||||
public class student {
|
||||
private int studentID;
|
||||
private String name;
|
||||
private boolean gender;
|
||||
private int age;
|
||||
private int math;
|
||||
private int english;
|
||||
private int chinese;
|
||||
|
||||
public void addStudent_ID (int id){
|
||||
this.studentID = id;
|
||||
}
|
||||
|
||||
public void addStudent_name (String name){
|
||||
this.name = name;
|
||||
}
|
||||
|
||||
public void addStudent_gender (String Uin){
|
||||
if (Objects.equals(Uin, "男")){
|
||||
this.gender = true;
|
||||
}
|
||||
if (Objects.equals(Uin, "女")){
|
||||
this.gender = false;
|
||||
}
|
||||
}
|
||||
|
||||
public void addStudent_age (int a){
|
||||
this.age = a;
|
||||
}
|
||||
|
||||
public void addStudent_math (int a){
|
||||
this.math = a;
|
||||
}
|
||||
|
||||
public void addStudent_english (int a){
|
||||
this.english = a;
|
||||
}
|
||||
|
||||
public void addStudent_chinese (int a){
|
||||
this.chinese = a;
|
||||
}
|
||||
|
||||
public int getStudent_sum (){
|
||||
return this.math + this.english + this.chinese;
|
||||
}
|
||||
|
||||
public double getStudent_average (){
|
||||
return (double) getStudent_sum() / 3;
|
||||
}
|
||||
|
||||
public void getStudentInfo (){
|
||||
System.out.println("Student ID: " + this.studentID);
|
||||
System.out.println("Student Name: " + this.name);
|
||||
System.out.print("Student Gender: ");
|
||||
if (Objects.equals(this.gender, true)){
|
||||
System.out.println("男");
|
||||
} else{
|
||||
System.out.println("女");
|
||||
}
|
||||
System.out.println("Student Age: " + this.age);
|
||||
System.out.println("Student Sum: " + getStudent_sum());
|
||||
System.out.println("Student Average: " + getStudent_average());
|
||||
}
|
||||
|
||||
public static void main (String[] args){
|
||||
student s1 = new student();
|
||||
|
||||
s1.addStudent_ID(1234);
|
||||
s1.addStudent_name("dog meat");
|
||||
s1.addStudent_gender("男");
|
||||
s1.addStudent_age(15);
|
||||
|
||||
s1.addStudent_chinese(114);
|
||||
s1.addStudent_english(5);
|
||||
s1.addStudent_math(14);
|
||||
|
||||
s1.getStudentInfo();
|
||||
}
|
||||
}
|
||||
@ -1,56 +0,0 @@
|
||||
/*
|
||||
* Function: 二维数组和
|
||||
* Date: 2024 04 18
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240418;
|
||||
|
||||
public class sumNum {
|
||||
// 行
|
||||
private int m;
|
||||
// 列
|
||||
private int n;
|
||||
// 和
|
||||
private int sum;
|
||||
|
||||
// 带参构造方法
|
||||
public sumNum(int[][] array) {
|
||||
this.m = array.length;
|
||||
this.n = array[0].length;
|
||||
|
||||
int i, j;
|
||||
|
||||
for (i = 0; i < this.n; i++){
|
||||
for (j = 0; j < this.m; j++){
|
||||
this.sum += array[i][j];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Retrieves the sum value.
|
||||
*
|
||||
* @return the sum value
|
||||
*/
|
||||
public int getSum (){
|
||||
return this.sum;
|
||||
}
|
||||
|
||||
public int get_m (){
|
||||
return this.m;
|
||||
}
|
||||
|
||||
public int get_n (){
|
||||
return this.n;
|
||||
}
|
||||
|
||||
public static void main (String[] args){
|
||||
int[][] s_array = {{1,2,3},{4,5,6},{7,8,9}};
|
||||
|
||||
sumNum s1 = new sumNum(s_array);
|
||||
|
||||
System.out.println("in " + s1.get_m() + " row and " + s1.get_n() + " column sum: ");
|
||||
System.out.println(s1.getSum());
|
||||
}
|
||||
}
|
||||
@ -1,47 +0,0 @@
|
||||
/*
|
||||
* Function: Java 多线程
|
||||
* Date: 2024 05 10
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240510;
|
||||
|
||||
class myThread extends Thread{
|
||||
// 成员变量
|
||||
private String who;
|
||||
// 构造方法
|
||||
public myThread(String who){
|
||||
super();
|
||||
this.who = who;
|
||||
}
|
||||
|
||||
public myThread(){
|
||||
super();
|
||||
}
|
||||
|
||||
// 覆盖 run 方法
|
||||
public void run(){
|
||||
for (int i = 0; i < 5; i++){
|
||||
try{
|
||||
sleep(1000);
|
||||
}
|
||||
catch (InterruptedException e){
|
||||
|
||||
}
|
||||
System.out.println(who + "is running");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public class thread {
|
||||
public static void main(String[] args){
|
||||
// 创建线程
|
||||
myThread test01Thread = new myThread("test01_Thread");
|
||||
myThread test02Thread = new myThread("test02_Thread");
|
||||
|
||||
test01Thread.start();
|
||||
test02Thread.start();
|
||||
|
||||
System.out.println("system out");
|
||||
}
|
||||
}
|
||||
@ -1,8 +0,0 @@
|
||||
package javaAssignment_20240514;
|
||||
|
||||
public class bus implements charge{
|
||||
@Override
|
||||
public void charge() {
|
||||
System.out.println("publicBus: 1$/sheet, No Limit Kilometer");
|
||||
}
|
||||
}
|
||||
@ -1,5 +0,0 @@
|
||||
package javaAssignment_20240514;
|
||||
|
||||
public interface charge {
|
||||
public void charge();
|
||||
}
|
||||
@ -1,13 +0,0 @@
|
||||
package javaAssignment_20240514;
|
||||
|
||||
public class cinema implements play, charge {
|
||||
@Override
|
||||
public void play() {
|
||||
System.out.println("Now Showing");
|
||||
}
|
||||
|
||||
@Override
|
||||
public void charge() {
|
||||
System.out.println("Cinema: 30$/sheet, Student half");
|
||||
}
|
||||
}
|
||||
@ -1,19 +0,0 @@
|
||||
package javaAssignment_20240514;
|
||||
|
||||
public class goods {
|
||||
private String goodsName;
|
||||
|
||||
public goods(String name){
|
||||
this.goodsName = name;
|
||||
}
|
||||
|
||||
// 返回商品名
|
||||
public String getName(){
|
||||
return this.goodsName;
|
||||
}
|
||||
|
||||
// 设置商品名
|
||||
public void setName(String name){
|
||||
this.goodsName = name;
|
||||
}
|
||||
}
|
||||
@ -1,30 +0,0 @@
|
||||
package javaAssignment_20240514;
|
||||
|
||||
public class market {
|
||||
private String marketName;
|
||||
private String marketGoodsList;
|
||||
|
||||
public market(String name){
|
||||
this.marketName = name;
|
||||
}
|
||||
|
||||
public String getName(){
|
||||
return this.marketName;
|
||||
}
|
||||
|
||||
public void setName(String name){
|
||||
this.marketName = name;
|
||||
}
|
||||
|
||||
public void getGoodsList(){
|
||||
System.out.println(this.marketGoodsList);
|
||||
}
|
||||
|
||||
public void setGoodsList(String goodlist){
|
||||
this.marketGoodsList = goodlist;
|
||||
}
|
||||
|
||||
public String sell(){
|
||||
return "yee~";
|
||||
}
|
||||
}
|
||||
@ -1,23 +0,0 @@
|
||||
package javaAssignment_20240514;
|
||||
|
||||
public class person {
|
||||
// 姓名
|
||||
private String personName;
|
||||
// 性别
|
||||
private String personGender;
|
||||
// 年龄
|
||||
private int personAge;
|
||||
|
||||
public person(String name, String gender, int age){
|
||||
this.personName = name;
|
||||
this.personGender = gender;
|
||||
this.personAge = age;
|
||||
}
|
||||
|
||||
public String getInfo(){
|
||||
String bunchInfo;
|
||||
bunchInfo = this.personName + "-" + this.personGender + "-" + this.personAge;
|
||||
return bunchInfo;
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,17 +0,0 @@
|
||||
package javaAssignment_20240514;
|
||||
|
||||
public class person_no3 {
|
||||
private String personName;
|
||||
|
||||
public String getName(){
|
||||
return this.personName;
|
||||
}
|
||||
|
||||
public void setName(String name){
|
||||
this.personName = name;
|
||||
}
|
||||
|
||||
public void shopping(){
|
||||
System.out.println("rob");
|
||||
}
|
||||
}
|
||||
@ -1,5 +0,0 @@
|
||||
package javaAssignment_20240514;
|
||||
|
||||
public interface play {
|
||||
public void play();
|
||||
}
|
||||
@ -1,42 +0,0 @@
|
||||
package javaAssignment_20240514;
|
||||
|
||||
public class student extends person {
|
||||
// 学号
|
||||
private int studentID;
|
||||
// 哲学成绩
|
||||
private int studentPhilosophyScore;
|
||||
// 英语成绩
|
||||
private int studentEnglishScore;
|
||||
// 计算机成绩
|
||||
private int studentComputerScore;
|
||||
|
||||
// 构造函数
|
||||
public student(String name, String gender, int age, int id, int philosophy, int english, int computer) {
|
||||
super(name, gender, age);
|
||||
this.studentID = id;
|
||||
this.studentPhilosophyScore = philosophy;
|
||||
this.studentEnglishScore = english;
|
||||
this.studentComputerScore = computer;
|
||||
}
|
||||
|
||||
// 三门课平均成绩
|
||||
public int aver(){
|
||||
return (this.studentPhilosophyScore + this.studentEnglishScore + this.studentComputerScore) / 3;
|
||||
}
|
||||
|
||||
// 最高分
|
||||
public double max(){
|
||||
return Math.max(Math.max(this.studentComputerScore, this.studentEnglishScore), this.studentPhilosophyScore);
|
||||
}
|
||||
|
||||
// 最低分
|
||||
public int min(){
|
||||
return Math.min(Math.min(this.studentComputerScore, this.studentPhilosophyScore), this.studentEnglishScore);
|
||||
}
|
||||
|
||||
public String getInfo(){
|
||||
String bunchInfo;
|
||||
bunchInfo = this.studentID + "-" + super.getInfo() + "-" + aver() + "-" + max() + "-" + min();
|
||||
return bunchInfo;
|
||||
}
|
||||
}
|
||||
@ -1,8 +0,0 @@
|
||||
package javaAssignment_20240514;
|
||||
|
||||
public class taxi implements play{
|
||||
@Override
|
||||
public void play() {
|
||||
System.out.println("Taxi: 1.6$/Kilometer, Starting 3 Kilometer");
|
||||
}
|
||||
}
|
||||
@ -1,65 +0,0 @@
|
||||
package javaAssignment_20240514;
|
||||
|
||||
public class test{
|
||||
|
||||
/*
|
||||
* class:
|
||||
* person.java
|
||||
* student.java
|
||||
*
|
||||
public static void main (String[] args){
|
||||
student s1 = new student("test", "man", 10, 101, 80, 60, 50);
|
||||
|
||||
System.out.println(s1.getInfo());
|
||||
}
|
||||
*/
|
||||
|
||||
/*
|
||||
* interface:
|
||||
* charge.java
|
||||
* play.java
|
||||
* class:
|
||||
* bus.java
|
||||
* taxi.java
|
||||
* cinema.java
|
||||
public static void main (String[] args){
|
||||
cinema c1 = new cinema();
|
||||
|
||||
c1.charge();
|
||||
c1.play();
|
||||
|
||||
bus b1 = new bus();
|
||||
b1.charge();
|
||||
|
||||
taxi t1 = new taxi();
|
||||
t1.play();
|
||||
}
|
||||
*/
|
||||
|
||||
/*
|
||||
* class:
|
||||
* goods.java
|
||||
* market.java
|
||||
* person_no3.java
|
||||
public static void main (String[] args){
|
||||
goods g1 = new goods("black_man");
|
||||
|
||||
System.out.println(g1.getName());
|
||||
g1.setName("rainbow_main");
|
||||
|
||||
market m1 = new market("limit");
|
||||
|
||||
System.out.println(m1.getName());
|
||||
m1.setName("no limit");
|
||||
m1.setGoodsList("one black_man - two black_man - three black-man");
|
||||
m1.getGoodsList();
|
||||
System.out.println(m1.sell());
|
||||
|
||||
person_no3 pn1 = new person_no3();
|
||||
|
||||
System.out.println(pn1.getName());
|
||||
pn1.setName("todd");
|
||||
pn1.shopping();
|
||||
}
|
||||
*/
|
||||
}
|
||||
@ -1,131 +0,0 @@
|
||||
/*
|
||||
* Function: Java 课程实验 四 - 第一题部分
|
||||
* Date: 2024 05 20
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240520;
|
||||
|
||||
import java.io.*;
|
||||
|
||||
public class function_01 {
|
||||
// 私有成员: 文件名
|
||||
private String fileName;
|
||||
|
||||
// 构造函数, 接收需要创建的文件名
|
||||
public function_01(String name ){
|
||||
this.fileName = name;
|
||||
}
|
||||
|
||||
/*
|
||||
* Function: createFile
|
||||
* Description:
|
||||
* 创建文件
|
||||
*
|
||||
* Input: void
|
||||
* Return: boolean 文件是否创建成功
|
||||
* */
|
||||
public boolean createFile(){
|
||||
try {
|
||||
// 通过 File 实例化一个 file 对象用于创建文件
|
||||
File file = new File(fileName);
|
||||
// 判断是否已经存在同名文件
|
||||
if (file.createNewFile()){
|
||||
System.out.println("File : " + this.fileName + " Create Done!");
|
||||
return true;
|
||||
} else {
|
||||
System.out.println("The file already exists!");
|
||||
return false;
|
||||
}
|
||||
} catch (IOException ioe){
|
||||
System.out.println("Error");
|
||||
ioe.printStackTrace();
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Function: writeToFile
|
||||
* Description:
|
||||
* 覆盖写入内容
|
||||
*
|
||||
* Input: String 需要写入的字符串
|
||||
* Return: boolean 是否写入成功
|
||||
* */
|
||||
public boolean writeToFile(String text){
|
||||
try {
|
||||
// 实例化 writer 对象指定需要写入的文件
|
||||
FileWriter writer = new FileWriter(this.fileName);
|
||||
// write 方法写入字符串
|
||||
writer.write(text);
|
||||
// 写入完毕关闭文件
|
||||
writer.close();
|
||||
// 输出提示
|
||||
System.out.println("Write to File : " + this.fileName + " \"" + text + "\"");
|
||||
return true;
|
||||
} catch (IOException ioe) {
|
||||
System.out.println("Write Error!");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Function: addToFile
|
||||
* Description:
|
||||
* 追加写入内容
|
||||
*
|
||||
* Input: String 需要写入的字符串
|
||||
* Return: boolean 是否写入成功
|
||||
*
|
||||
* Other:
|
||||
* 该方法与 writeToFile 实现原理相同
|
||||
* 构造 FileWriter 时传入的参数中 append 可以通过 boolean 控制追加写入还是覆盖写入
|
||||
* true: 追加
|
||||
* false: 覆盖
|
||||
* */
|
||||
public boolean addToFile(String text){
|
||||
try {
|
||||
FileWriter writer = new FileWriter(this.fileName, true);
|
||||
writer.write(text);
|
||||
writer.close();
|
||||
System.out.println("Add to File : " + this.fileName + " \"" + text + "\"");
|
||||
return true;
|
||||
} catch (IOException ioe){
|
||||
System.out.println("Add Error!");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Function: getFile
|
||||
* Description:
|
||||
* 获取文件内容
|
||||
*
|
||||
* Input: void
|
||||
* Return: String 返回文件内容
|
||||
* */
|
||||
public String getFile(){
|
||||
// 实例化 content 对象用于存储文件内容
|
||||
StringBuilder content = new StringBuilder();
|
||||
try {
|
||||
// 实例化 reader 对象用于读取文件内容
|
||||
BufferedReader reader = new BufferedReader(new FileReader(this.fileName));
|
||||
// line 用于存储每一行内容
|
||||
String line;
|
||||
// while 判断行尾不为空 执行循环
|
||||
while ((line = reader.readLine()) != null) {
|
||||
// 将每一行的字符串拼合至 content 中
|
||||
content.append(line);
|
||||
// 通过 System.lineSeparator() 追加一个换行符
|
||||
content.append(System.lineSeparator());
|
||||
}
|
||||
// 关闭文件
|
||||
reader.close();
|
||||
} catch (IOException ioe) {
|
||||
System.out.println("Read File Error!");
|
||||
ioe.printStackTrace();
|
||||
}
|
||||
// 返回读取到的字符串
|
||||
return content.toString();
|
||||
}
|
||||
}
|
||||
@ -1,170 +0,0 @@
|
||||
/*
|
||||
* Function: Java 课程实验 四 - 第二题部分
|
||||
* Date: 2024 05 20
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240520;
|
||||
|
||||
import java.io.*;
|
||||
import java.security.SecureRandom;
|
||||
|
||||
public class function_02 {
|
||||
public static final int MaxLength = 15;
|
||||
// 文件名
|
||||
private String fileName;
|
||||
// 随机数数组
|
||||
private int[] randomArray = new int[MaxLength];
|
||||
|
||||
// 构造函数, 接收需要创建的文件名
|
||||
// public function_02(String name ){
|
||||
// this.fileName = name;
|
||||
// }
|
||||
|
||||
/*
|
||||
* Function: createRandom
|
||||
* Description:
|
||||
* 生成 15 个随机整数, 并存储到数组中
|
||||
*
|
||||
* Input:
|
||||
* int min 随机数最小值
|
||||
* int max 随机数最大值
|
||||
* Return: int[] 整型数组
|
||||
* */
|
||||
public int[] createRandom(int min, int max){
|
||||
// 通过 SecureRandom (安全随机类) 实例化一个 secureRandom 对象用于生成随机数
|
||||
SecureRandom secureRandom = new SecureRandom();
|
||||
for (int i = 0; i < MaxLength; i++){
|
||||
// 先生成 0 ~ max - min + 1 之间的随机数
|
||||
// 后将生成结果 + min
|
||||
// 最后赋值到随机数数组中
|
||||
randomArray[i] = min + secureRandom.nextInt(max - min + 1);
|
||||
}
|
||||
System.out.println("Create Random Array Done!");
|
||||
// 返回生成完毕的随机数组
|
||||
return randomArray;
|
||||
}
|
||||
|
||||
/*
|
||||
* Function: createFile
|
||||
* Description:
|
||||
* 创建文件
|
||||
*
|
||||
* Input: String name 需要创建的文件名
|
||||
* Return: boolean 文件是否创建成功
|
||||
* */
|
||||
public boolean createFile(String name){
|
||||
try {
|
||||
this.fileName = name;
|
||||
// 通过 File 实例化 file 对象用于创建文件
|
||||
File file = new File(fileName);
|
||||
// 判断文件是否创建成功
|
||||
// .createNewFile 方法会检查文件是否存在, 如果不存在就创建文件并返回 true
|
||||
// 否则返回 false 即文件已存在
|
||||
if (file.createNewFile()){
|
||||
System.out.println("File: " + this.fileName + " Create Done!");
|
||||
return true;
|
||||
} else {
|
||||
System.out.println("The file already exists!");
|
||||
return false;
|
||||
}
|
||||
} catch (IOException ioe){
|
||||
System.out.println("Create File Error!");
|
||||
ioe.printStackTrace();
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Function: writeToFile
|
||||
* Description:
|
||||
* 向文件写入数据
|
||||
*
|
||||
* Input: String data 需要写入的数据
|
||||
* Return: boolean 是否写入成功
|
||||
* */
|
||||
public boolean writeToFile(String data){
|
||||
try {
|
||||
// 通过 BufferedWriter 实例化 writer 对象用于向文件写入
|
||||
BufferedWriter writer = new BufferedWriter(new FileWriter(this.fileName));
|
||||
// .write 方法写入数据
|
||||
writer.write(data);
|
||||
// .close 方法写入完毕关闭文件
|
||||
writer.close();
|
||||
System.out.println("Write File Done!");
|
||||
return true;
|
||||
} catch (IOException ioe){
|
||||
System.out.println("Write File Error!");
|
||||
ioe.printStackTrace();
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Function: readFileToArray
|
||||
* Description:
|
||||
* 读取文件中的内容并返回数组
|
||||
*
|
||||
* Input: void
|
||||
* Return: int[] 返回的数组
|
||||
* */
|
||||
public int[] readFileToArray(){
|
||||
try{
|
||||
// 通过 BufferedReader 类实例化 reader 对象用于读取文件内容
|
||||
BufferedReader reader = new BufferedReader(new FileReader(this.fileName));
|
||||
// 读取文件中一行的内容
|
||||
String line = reader.readLine();
|
||||
// split 方法以 "-" 为分隔符拆分字符串并写入到字符串数组中
|
||||
String[] strArray = line.split("-");
|
||||
// 创建整型数组
|
||||
int[] intArray = new int[MaxLength];
|
||||
for (int i = 0; i < MaxLength; i++){
|
||||
// 将字符串数组转换为整型赋值给整型数组
|
||||
intArray[i] = Integer.parseInt(strArray[i]);
|
||||
}
|
||||
System.out.println("Reade File to Array Done!");
|
||||
// 返回数组
|
||||
return intArray;
|
||||
} catch (IOException ioe){
|
||||
System.out.println("Reade File to Array Error!");
|
||||
ioe.printStackTrace();
|
||||
// 发生错误时返回一个空数组
|
||||
return new int[0];
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Function: bubbleSort
|
||||
* Description:
|
||||
* 冒泡排序算法
|
||||
*
|
||||
* Input: void
|
||||
* Return: int[] 需要排序的数组
|
||||
* */
|
||||
public void bubbleSort(int[] array){
|
||||
// 获取输入的数组长度
|
||||
int n = array.length;
|
||||
|
||||
// 冒泡排序
|
||||
for (int i = 0; i < n; i++){
|
||||
for (int j = 0; j < n - i - 1; j++){
|
||||
if (array[j] > array[j + 1]) {
|
||||
int temp = array[j];
|
||||
array[j] = array[j + 1];
|
||||
array[j + 1] = temp;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
System.out.println("Bubble Sort Done!");
|
||||
|
||||
// 输出排序后的数组
|
||||
for (int i = 0; i < array.length; i++){
|
||||
System.out.print(array[i]);
|
||||
// 打印分隔符
|
||||
if (i != array.length - 1){
|
||||
System.out.print("-");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1,79 +0,0 @@
|
||||
/*
|
||||
* Function: Java 课程实验 四
|
||||
* Date: 2024 05 20
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240520;
|
||||
|
||||
public class test {
|
||||
public static void main (String[] args){
|
||||
|
||||
/*
|
||||
* 1. 利用文件输入输出流创建一个文件 file1.txt
|
||||
* 2. 写入字符 “文件已被成功创建！”
|
||||
* 3. 文件输入输出流打开文件 file1.txt
|
||||
* 4. 在文件末尾追加一行字符串 “又添加了一行文字”
|
||||
* 5. 打开 file1.txt 读取内容并且显示在屏幕上
|
||||
*
|
||||
* class: function_01.java
|
||||
*
|
||||
|
||||
// 实例化第一个实验内容的对象
|
||||
function_01 f_1 = new function_01("file1.txt");
|
||||
// 创建文件
|
||||
f_1.createFile();
|
||||
// 覆盖写入字符串
|
||||
f_1.writeToFile("文件已被成功创建!");
|
||||
// 追加写入字符串
|
||||
f_1.addToFile("又添加了一行文字!");
|
||||
// 输出文件的内容
|
||||
System.out.println(f_1.getFile());
|
||||
|
||||
*/
|
||||
|
||||
/* ( つ•̀ω•́)つ :-D */
|
||||
|
||||
/*
|
||||
* 1. 产生 15 个 20~9999 之间的随机整数
|
||||
* 2. 利用 BufferedWriter 类将其写入文件 file2.txt 中
|
||||
* 3. 读取该文件中的数据并升序排序
|
||||
*
|
||||
* class: function_02.java
|
||||
*
|
||||
|
||||
// 实例化第二个实验内容的对象 f_2
|
||||
function_02 f_2 = new function_02();
|
||||
|
||||
// 创建文件
|
||||
f_2.createFile("file2.txt");
|
||||
|
||||
// 接收 createRandom 返回的随机数数组
|
||||
int[] array = f_2.createRandom(20, 9999);
|
||||
|
||||
// 使用 StringBuilder 类实例化一个 data 对象用于将
|
||||
// 整型数组转换为 字符串 + 分隔符的形式
|
||||
StringBuilder data = new StringBuilder();
|
||||
|
||||
// 将获取到的数组转换为字符串
|
||||
for (int i = 0; i < array.length; i++){
|
||||
// .append 方法将输入的字符追加到字符串末尾
|
||||
data.append(array[i]);
|
||||
// 插入分隔符
|
||||
if (i != array.length - 1){
|
||||
data.append("-");
|
||||
}
|
||||
}
|
||||
|
||||
// .toString 方法返回 data 中的字符串并将字符串数组写入文件中
|
||||
f_2.writeToFile(data.toString());
|
||||
|
||||
// 读取文件中内容并返回成数组
|
||||
int[] array_copy = f_2.readFileToArray();
|
||||
|
||||
// 调用冒泡排序算法进行排序
|
||||
f_2.bubbleSort(array_copy);
|
||||
|
||||
*/
|
||||
}
|
||||
}
|
||||
@ -1,32 +0,0 @@
|
||||
/*
|
||||
* Function: Java 课程实验 五 - 第二题 类 二
|
||||
* Date: 2024 05 28
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240528;
|
||||
|
||||
import java.io.PrintStream;
|
||||
|
||||
public class Bank {
|
||||
// 银行名
|
||||
private String bankName;
|
||||
// 银行余额
|
||||
private static int money = 0;
|
||||
|
||||
// 构造函数
|
||||
public Bank (String bankName){
|
||||
this.bankName = bankName;
|
||||
}
|
||||
|
||||
// 获取银行当前余额
|
||||
public int getBankBalance (){
|
||||
return money;
|
||||
}
|
||||
|
||||
// 向银行存钱
|
||||
// static 可以实现在没有实例化对象时就调用这个方法
|
||||
public static synchronized void Funds (int funds){
|
||||
money += funds;
|
||||
}
|
||||
}
|
||||
@ -1,36 +0,0 @@
|
||||
/*
|
||||
* Function: Java 课程实验 五 - 第二题 类 一
|
||||
* Date: 2024 05 28
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240528;
|
||||
|
||||
public class Customer implements Runnable {
|
||||
// 用户姓名
|
||||
private String customerName;
|
||||
// 存取次数
|
||||
private int customerNum = 3;
|
||||
|
||||
// 构造函数
|
||||
// public Customer (String customerName){
|
||||
// this.customerName = customerName;
|
||||
// }
|
||||
|
||||
// 重写 run 方法
|
||||
@Override
|
||||
public void run() {
|
||||
// 重复指定次数
|
||||
for (int i = 0; i < this.customerNum; i++) {
|
||||
// 输出用户存款信息
|
||||
System.out.println("User: " + Thread.currentThread().getName() + " Deposit 100");
|
||||
// 调用存款方法
|
||||
deposit(100);
|
||||
}
|
||||
}
|
||||
|
||||
// 存款方法
|
||||
private synchronized void deposit(int amount) {
|
||||
Bank.Funds(amount);
|
||||
}
|
||||
}
|
||||
@ -1,35 +0,0 @@
|
||||
/*
|
||||
* Function: Java 课程实验 五 - 第一题 类
|
||||
* Date: 2024 05 28
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240528;
|
||||
|
||||
public class FlightSystem implements Runnable{
|
||||
// 售票窗口名
|
||||
private String windowName;
|
||||
// 剩余票数
|
||||
private int tickets = 20;
|
||||
|
||||
// 构造函数
|
||||
public FlightSystem(String windowName){
|
||||
this.windowName = windowName;
|
||||
}
|
||||
|
||||
// 重写 run 方法
|
||||
@Override
|
||||
public void run (){
|
||||
while (tickets > 0){
|
||||
Tickets();
|
||||
}
|
||||
}
|
||||
|
||||
// 售票方法
|
||||
private synchronized void Tickets (){
|
||||
if (this.tickets > 0){
|
||||
--this.tickets;
|
||||
System.out.println("Window: " + this.windowName + " Tickets were sold successfully Now remainder" + this.tickets);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1,74 +0,0 @@
|
||||
/*
|
||||
* Function: Java 课程实验 五
|
||||
* Date: 2024 05 28
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240528;
|
||||
|
||||
public class test {
|
||||
public static void main (String[] args){
|
||||
/*
|
||||
* 用 Runnable 接口程序来模拟航班售票系统
|
||||
* 1. 实现3个售票窗口发售某次航班的20张机票
|
||||
* 2. 一个售票窗口用一个线程来表示。
|
||||
*
|
||||
* Class: FlightSystem
|
||||
*
|
||||
|
||||
FlightSystem window_1 = new FlightSystem("Window_alpha");
|
||||
FlightSystem window_2 = new FlightSystem("Window_bravo");
|
||||
FlightSystem window_3 = new FlightSystem("Window_charlie");
|
||||
|
||||
Thread t_1 = new Thread(window_1);
|
||||
Thread t_2 = new Thread(window_2);
|
||||
Thread t_3 = new Thread(window_3);
|
||||
|
||||
t_1.start();
|
||||
t_2.start();
|
||||
t_3.start();
|
||||
|
||||
*/
|
||||
|
||||
/* ( つ•̀ω•́)つ :-D */
|
||||
|
||||
/*
|
||||
* 1. 设某家银行可接受用户的存款，每进行一次存款，便可计算机出存款的总额。
|
||||
* 2. 现有两名顾客，每人分3次、每次存入100元。
|
||||
*
|
||||
* Class
|
||||
* 1. Bank.java
|
||||
* 2. Customer.java
|
||||
*/
|
||||
|
||||
// 通过 Bank 类实例化 b_1 对象
|
||||
Bank b_1 = new Bank("Best Nigger Bank");
|
||||
|
||||
// 通过 Customer 实例化两个用户对象
|
||||
Customer c_1 = new Customer();
|
||||
|
||||
// 通过 Thread 实例化两个线程类
|
||||
Thread t_1 = new Thread(c_1, "Todd");
|
||||
Thread t_2 = new Thread(c_1, "Todd Copy");
|
||||
|
||||
// 在开始存款前输出一次银行当前的余额
|
||||
System.out.println("Now Bank Balance: " + b_1.getBankBalance());
|
||||
|
||||
// 开始执行两个线程
|
||||
t_1.start();
|
||||
t_2.start();
|
||||
|
||||
// 等待两个线程执行完毕
|
||||
try {
|
||||
t_1.join();
|
||||
t_2.join();
|
||||
} catch (InterruptedException e){
|
||||
e.printStackTrace();
|
||||
}
|
||||
|
||||
// 输出当前银行余额
|
||||
System.out.println("Now Bank Balance: " + b_1.getBankBalance());
|
||||
|
||||
/**/
|
||||
}
|
||||
}
|
||||
@ -1,62 +0,0 @@
|
||||
/*
|
||||
* Function: Java 课程实验 六 - 题目 01
|
||||
* Date: 2024 06 14
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240614;
|
||||
|
||||
import javax.swing.*;
|
||||
import java.awt.*;
|
||||
import java.awt.event.ActionEvent;
|
||||
import java.awt.event.ActionListener;
|
||||
|
||||
public class function_01 extends Frame implements ActionListener{
|
||||
|
||||
Label userLabel, passLabel;
|
||||
TextField userField;
|
||||
JPasswordField passField;
|
||||
Button loginButton;
|
||||
|
||||
public function_01() {
|
||||
// 设置窗口属性
|
||||
setTitle("User Login");
|
||||
setSize(300, 200);
|
||||
// setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
|
||||
setLayout(new FlowLayout());
|
||||
|
||||
// 添加组件
|
||||
userLabel = new Label("User Id:");
|
||||
add(userLabel);
|
||||
userField = new TextField(15);
|
||||
add(userField);
|
||||
|
||||
passLabel = new Label("Password:");
|
||||
add(passLabel);
|
||||
passField = new JPasswordField(15);
|
||||
add(passField);
|
||||
|
||||
loginButton = new Button("Login");
|
||||
loginButton.addActionListener(this);
|
||||
add(loginButton);
|
||||
|
||||
setVisible(true);
|
||||
}
|
||||
|
||||
public void actionPerformed(ActionEvent e) {
|
||||
if (e.getSource() == loginButton) {
|
||||
String username = userField.getText();
|
||||
String password = new String(passField.getPassword());
|
||||
if (isValidUser(username, password)) {
|
||||
dispose(); // 关闭当前窗口
|
||||
JOptionPane.showMessageDialog(null, "Login Done!");
|
||||
} else {
|
||||
JOptionPane.showMessageDialog(null, "Error!");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private boolean isValidUser(String username, String password) {
|
||||
return "user".equals(username) && "pass".equals(password);
|
||||
}
|
||||
}
|
||||
@ -1,96 +0,0 @@
|
||||
/*
|
||||
* Function: Java 课程实验 六 - 题目 02
|
||||
* Date: 2024 06 14
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240614;
|
||||
|
||||
import java.awt.*;
|
||||
import java.awt.event.ActionEvent;
|
||||
import java.awt.event.ActionListener;
|
||||
import javax.swing.*;
|
||||
|
||||
public class function_02 extends JFrame {
|
||||
JLabel num1Label, num2Label, resultLabel;
|
||||
JTextField num1Field, num2Field, resultField;
|
||||
JComboBox<String> operationComboBox;
|
||||
JButton calculateButton;
|
||||
|
||||
public function_02() {
|
||||
super("计算器");
|
||||
|
||||
// 初始化组件
|
||||
num1Label = new JLabel("数字1:");
|
||||
num2Label = new JLabel("数字2:");
|
||||
resultLabel = new JLabel("结果:");
|
||||
num1Field = new JTextField(10);
|
||||
num2Field = new JTextField(10);
|
||||
resultField = new JTextField(10);
|
||||
resultField.setEditable(false); // 结果字段不可编辑
|
||||
operationComboBox = new JComboBox<>(new String[]{"+", "-", "*", "/"});
|
||||
calculateButton = new JButton("计算");
|
||||
|
||||
// 添加动作监听器
|
||||
calculateButton.addActionListener(new ActionListener() {
|
||||
@Override
|
||||
public void actionPerformed(ActionEvent e) {
|
||||
calculate();
|
||||
}
|
||||
});
|
||||
|
||||
// 设置布局
|
||||
setLayout(new GridLayout(4, 2));
|
||||
|
||||
// 添加组件到窗口
|
||||
add(num1Label);
|
||||
add(num1Field);
|
||||
add(num2Label);
|
||||
add(num2Field);
|
||||
add(new JLabel()); // 空白占位
|
||||
add(operationComboBox);
|
||||
add(resultLabel);
|
||||
add(resultField);
|
||||
add(new JLabel()); // 空白占位
|
||||
add(calculateButton);
|
||||
|
||||
// 设置窗口属性
|
||||
setSize(300, 150);
|
||||
setDefaultCloseOperation(EXIT_ON_CLOSE);
|
||||
setLocationRelativeTo(null); // 居中显示
|
||||
setVisible(true);
|
||||
}
|
||||
|
||||
private void calculate() {
|
||||
try {
|
||||
double num1 = Double.parseDouble(num1Field.getText());
|
||||
double num2 = Double.parseDouble(num2Field.getText());
|
||||
String operation = (String) operationComboBox.getSelectedItem();
|
||||
double result = 0;
|
||||
|
||||
switch (operation) {
|
||||
case "+":
|
||||
result = num1 + num2;
|
||||
break;
|
||||
case "-":
|
||||
result = num1 - num2;
|
||||
break;
|
||||
case "*":
|
||||
result = num1 * num2;
|
||||
break;
|
||||
case "/":
|
||||
if (num2 != 0)
|
||||
result = num1 / num2;
|
||||
else {
|
||||
JOptionPane.showMessageDialog(this, "除数不能为0!");
|
||||
return;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
resultField.setText(String.valueOf(result));
|
||||
} catch (NumberFormatException ex) {
|
||||
JOptionPane.showMessageDialog(this, "请输入有效的数字!");
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1,62 +0,0 @@
|
||||
/*
|
||||
* Function: Java 课程实验 六 - 题目 03
|
||||
* Date: 2024 06 14
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240614;
|
||||
|
||||
import javax.swing.*;
|
||||
import java.awt.*;
|
||||
import java.awt.event.ItemEvent;
|
||||
import java.awt.event.ItemListener;
|
||||
|
||||
public class function_03 {
|
||||
|
||||
public function_03(){
|
||||
SwingUtilities.invokeLater(() -> {
|
||||
createAndShowGUI();
|
||||
});
|
||||
}
|
||||
|
||||
private static void createAndShowGUI() {
|
||||
JFrame frame = new JFrame("选项事件处理");
|
||||
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
|
||||
frame.setLayout(new FlowLayout());
|
||||
|
||||
JTextArea textArea = new JTextArea("选顶事件ItemEvent的使用方法", 6, 20);
|
||||
textArea.setEditable(false);
|
||||
frame.add(textArea);
|
||||
|
||||
JRadioButton redButton = new JRadioButton("红色");
|
||||
JRadioButton blueButton = new JRadioButton("蓝色");
|
||||
|
||||
ButtonGroup group = new ButtonGroup();
|
||||
group.add(redButton);
|
||||
group.add(blueButton);
|
||||
|
||||
ItemListener itemListener = new ItemListener() {
|
||||
@Override
|
||||
public void itemStateChanged(ItemEvent e) {
|
||||
if (e.getStateChange() == ItemEvent.SELECTED) {
|
||||
Object source = e.getSource();
|
||||
|
||||
if (source == redButton) {
|
||||
textArea.setForeground(Color.RED);
|
||||
} else if (source == blueButton) {
|
||||
textArea.setForeground(Color.BLUE);
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
redButton.addItemListener(itemListener);
|
||||
blueButton.addItemListener(itemListener);
|
||||
|
||||
frame.add(redButton);
|
||||
frame.add(blueButton);
|
||||
|
||||
frame.pack();
|
||||
frame.setVisible(true);
|
||||
}
|
||||
}
|
||||
@ -1,49 +0,0 @@
|
||||
/*
|
||||
* Function: Java 课程实验 六
|
||||
* Date: 2024 06 14
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaAssignment_20240614;
|
||||
|
||||
public class test {
|
||||
public static void main (String[] args){
|
||||
|
||||
/*
|
||||
* 设计实现一个用户登录页面，当单击登录按钮用户名密码正确跳转到计算页面。
|
||||
*
|
||||
* Class: function_01.java
|
||||
*
|
||||
|
||||
function_01 f_1 = new function_01();
|
||||
|
||||
*/
|
||||
|
||||
/* ( つ•̀ω•́)つ :-D */
|
||||
|
||||
/*
|
||||
* 设计实现一个计算页面，实现两个数的加法、减法、乘法和除法运算。
|
||||
*
|
||||
* Class: function_02.java
|
||||
*
|
||||
|
||||
function_02 f_2 = new function_02();
|
||||
|
||||
*/
|
||||
|
||||
/* ( つ•̀ω•́)つ :-D */
|
||||
|
||||
/*
|
||||
* 编写一个应用程序，标题为“选项事件处理”的窗口，窗口布局为FlowLayout。
|
||||
* 设计两个单选按钮，一个文本区。
|
||||
* 单击单选按钮时，将文本区中的文字设置成为相应颜色的字体。
|
||||
*
|
||||
* Class: function_03.java
|
||||
*
|
||||
|
||||
function_03 f_3 = new function_03();
|
||||
|
||||
*/
|
||||
|
||||
}
|
||||
}
|
||||
@ -1,8 +0,0 @@
|
||||
package javaPackage_20240514;
|
||||
|
||||
public class Bus implements Charge{
|
||||
@Override
|
||||
public void charge() {
|
||||
System.out.println("PublicBus: 1$/sheet, no limit kilometers");
|
||||
}
|
||||
}
|
||||
@ -1,5 +0,0 @@
|
||||
package javaPackage_20240514;
|
||||
|
||||
public interface Charge {
|
||||
public void charge();
|
||||
}
|
||||
@ -1,12 +0,0 @@
|
||||
package javaPackage_20240514;
|
||||
|
||||
public class Cinema implements Charge, Play{
|
||||
|
||||
public void charge() {
|
||||
System.out.println("Cinema: 30$/sheet, enjoy half price with student id");
|
||||
}
|
||||
|
||||
public void play(){
|
||||
System.out.println("Showing movie");
|
||||
}
|
||||
}
|
||||
@ -1,5 +0,0 @@
|
||||
package javaPackage_20240514;
|
||||
|
||||
public interface Play {
|
||||
public void play();
|
||||
}
|
||||
@ -1,8 +0,0 @@
|
||||
package javaPackage_20240514;
|
||||
|
||||
public class Taxi implements Play{
|
||||
|
||||
public void play(){
|
||||
System.out.println("Taxi: 1.6$/kilometer, Starting 3 kilometer");
|
||||
}
|
||||
}
|
||||
@ -1,38 +0,0 @@
|
||||
/*
|
||||
* Function: 20240516 面向对象程序设计课程实验 NO.2
|
||||
* Date: 2024 05 16
|
||||
* Code by: JRNitre
|
||||
* */
|
||||
|
||||
package javaPackage_20240514;
|
||||
|
||||
public class test {
|
||||
|
||||
/*
|
||||
* 1. 创建一个收费接口 Charge, 其中有一个抽象方法 charge();
|
||||
* 2. 创建另一个收费接口 Play, 其中有一个抽象方法 play();
|
||||
*
|
||||
* 3. 声明 Bus 类来实现接口 Charge, 对于 Bus 类中的 charge(); 实现为输出:
|
||||
* "公共汽车: 1元/张, 不计公里数" PublicBus: 1 $/sheet no limit kilometers
|
||||
* 4. 声明 Taxi 类来实现接口 Charge, 对于 Taxi 中的 charge(); 实现为输出:
|
||||
* "出租车: 1.6元/公里, 起价3公里" Taxi: 1.6$/Kilometer, Starting 3 Kilometer
|
||||
* 5. 声明 Cinema 类来实现接口 Charge, 对于 Cinema 中的 charge(); 实现为输出:
|
||||
* "解放电影院: 30元/张, 凭学生证享受半价" Cinema: 30$/sheet, Enjoy half price with student ID
|
||||
* 对于 Cinema 中的 play(); 实现为输出:
|
||||
* "正在放映电影" Showing movie
|
||||
*
|
||||
* 6. 在主类中创建对象, 输出结果
|
||||
* */
|
||||
|
||||
public static void main(String[] args){
|
||||
Bus b1 = new Bus();
|
||||
Taxi t1 = new Taxi();
|
||||
Cinema c1 = new Cinema();
|
||||
|
||||
b1.charge();
|
||||
t1.play();
|
||||
|
||||
c1.charge();
|
||||
c1.play();
|
||||
}
|
||||
}
|
||||
@ -1,91 +0,0 @@
|
||||
package javaPackage_20240524;
|
||||
|
||||
import java.io.*;
|
||||
import java.security.SecureRandom;
|
||||
|
||||
public class function {
|
||||
// 数组长度
|
||||
private int ArrayMaxLength;
|
||||
|
||||
private String fileName;
|
||||
|
||||
public int[] createRandomArray(int num, int min, int max){
|
||||
this.ArrayMaxLength = num;
|
||||
int[] array = new int[this.ArrayMaxLength];
|
||||
SecureRandom secureRandom = new SecureRandom();
|
||||
for (int i = 0; i < this.ArrayMaxLength; i++){
|
||||
array[i] = min + secureRandom.nextInt(max - min + 1);
|
||||
}
|
||||
System.out.println("Create Random Array Done!");
|
||||
return array;
|
||||
}
|
||||
|
||||
public void createFile (String fileName){
|
||||
this.fileName = fileName;
|
||||
File file = new File(fileName);
|
||||
try {
|
||||
if (file.createNewFile()){
|
||||
System.out.println("Create file Done!");
|
||||
} else {
|
||||
System.out.println("Create file Error!");
|
||||
}
|
||||
} catch (IOException ioe){
|
||||
System.out.println("Create file Error!");
|
||||
ioe.printStackTrace();
|
||||
}
|
||||
}
|
||||
|
||||
public void writeFile (String data){
|
||||
try {
|
||||
BufferedWriter writer = new BufferedWriter(new FileWriter(this.fileName));
|
||||
writer.write(data);
|
||||
writer.close();
|
||||
System.out.println("Writer Done!");
|
||||
} catch (IOException ioe){
|
||||
System.out.println("Writer Error!");
|
||||
}
|
||||
}
|
||||
|
||||
public int[] readeFileToInt(){
|
||||
try {
|
||||
BufferedReader reader = new BufferedReader(new FileReader(this.fileName));
|
||||
String line = reader.readLine();
|
||||
|
||||
String[] arrayStr = line.split("-");
|
||||
|
||||
int[] arrayInt = new int[this.ArrayMaxLength];
|
||||
for (int i = 0; i < this.ArrayMaxLength; i++){
|
||||
arrayInt[i] = Integer.parseInt(arrayStr[i]);
|
||||
}
|
||||
System.out.println("Reader File Done!");
|
||||
return arrayInt;
|
||||
} catch (IOException ioe){
|
||||
System.out.println("Reader File Error!");
|
||||
return new int[0];
|
||||
}
|
||||
}
|
||||
|
||||
public void bubbleSort(int[] array){
|
||||
int m = array.length;
|
||||
|
||||
for (int i = 0; i < m; i++){
|
||||
for (int j = 0; j < m - i - 1; i++){
|
||||
if (array[j] > array[j+1]){
|
||||
int temp = array[j];
|
||||
array[j] = array[j + 1];
|
||||
array[j + 1] = temp;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
System.out.println("Sort Done!");
|
||||
|
||||
for (int k = 0; k < m; k++){
|
||||
System.out.print(array[k]);
|
||||
if (k != m - 1){
|
||||
System.out.print(" - ");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
@ -1,27 +0,0 @@
|
||||
package javaPackage_20240524;
|
||||
|
||||
public class test {
|
||||
public static void main (String[] args){
|
||||
/*
|
||||
* 1. 产生 15 个 20~9999 之间的随机整数
|
||||
* 2. 利用 BufferedWriter 类将其写入文件 file2.txt 中
|
||||
* 3. 读取该文件中的数据并升序排序
|
||||
*/
|
||||
function f_1 = new function();
|
||||
|
||||
int array[] = f_1.createRandomArray(15, 20, 9999);
|
||||
|
||||
f_1.createFile("file2.txt");
|
||||
StringBuilder s_1 = new StringBuilder();
|
||||
for (int i = 0; i < array.length; i++){
|
||||
s_1.append(array[i]);
|
||||
if (i != array.length - 1){
|
||||
s_1.append("-");
|
||||
}
|
||||
}
|
||||
|
||||
f_1.writeFile(s_1.toString());
|
||||
|
||||
f_1.bubbleSort(f_1.readeFileToInt());
|
||||
}
|
||||
}
|
||||
@ -1,19 +0,0 @@
|
||||
package javaPackage_20240531;
|
||||
|
||||
public class bank {
|
||||
private static int money;
|
||||
|
||||
private String bankNmae;
|
||||
|
||||
public bank (String name){
|
||||
this.bankNmae = name;
|
||||
}
|
||||
|
||||
public int getMoney(){
|
||||
return money;
|
||||
}
|
||||
|
||||
public static synchronized void add (int n){
|
||||
money += n;
|
||||
}
|
||||
}
|
||||
@ -1,19 +0,0 @@
|
||||
package javaPackage_20240531;
|
||||
|
||||
public class customer implements Runnable{
|
||||
|
||||
private static final int num = 3;
|
||||
|
||||
@Override
|
||||
public void run(){
|
||||
for (int i = 0; i < num; i++){
|
||||
System.out.println("User: " + Thread.currentThread().getName() + " add 100");
|
||||
customerAdd(100);
|
||||
}
|
||||
}
|
||||
|
||||
public synchronized void customerAdd(int n){
|
||||
bank.add(n);
|
||||
}
|
||||
|
||||
}
|
||||
@ -1,28 +0,0 @@
|
||||
package javaPackage_20240531;
|
||||
|
||||
public class test {
|
||||
public static void main (String[] args){
|
||||
/*
|
||||
* 1. 设某家银行可接受用户的存款，每进行一次存款，便可计算出存款的总额。
|
||||
* 2. 现有两名顾客，每人分3次、每次存入100元。
|
||||
*/
|
||||
|
||||
bank b = new bank("Bank");
|
||||
customer c = new customer();
|
||||
|
||||
Thread t_1 = new Thread(c, "todd");
|
||||
Thread t_2 = new Thread(c, "Copy todd");
|
||||
|
||||
System.out.println("Now Bank: " + b.getMoney());
|
||||
|
||||
t_1.start();
|
||||
t_2.start();
|
||||
|
||||
try {
|
||||
t_1.join();
|
||||
t_2.join();
|
||||
} catch (Exception e){}
|
||||
|
||||
System.out.println("Now Bank: " + b.getMoney());
|
||||
}
|
||||
}
|
||||
@ -1,7 +0,0 @@
|
||||
package learn_20240419;
|
||||
|
||||
public class Main {
|
||||
public static void main (String[] args){
|
||||
System.out.println("test");
|
||||
}
|
||||
}
|
||||
@ -1,29 +0,0 @@
|
||||
### IntelliJ IDEA ###
|
||||
out/
|
||||
!**/src/main/**/out/
|
||||
!**/src/test/**/out/
|
||||
|
||||
### Eclipse ###
|
||||
.apt_generated
|
||||
.classpath
|
||||
.factorypath
|
||||
.project
|
||||
.settings
|
||||
.springBeans
|
||||
.sts4-cache
|
||||
bin/
|
||||
!**/src/main/**/bin/
|
||||
!**/src/test/**/bin/
|
||||
|
||||
### NetBeans ###
|
||||
/nbproject/private/
|
||||
/nbbuild/
|
||||
/dist/
|
||||
/nbdist/
|
||||
/.nb-gradle/
|
||||
|
||||
### VS Code ###
|
||||
.vscode/
|
||||
|
||||
### Mac OS ###
|
||||
.DS_Store
|
||||
3
02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/.idea/.gitignore
generated
vendored
3
02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/.idea/.gitignore
generated
vendored
@ -1,3 +0,0 @@
|
||||
# 默认忽略的文件
|
||||
/shelf/
|
||||
/workspace.xml
|
||||
@ -1,5 +0,0 @@
|
||||
<component name="ProjectCodeStyleConfiguration">
|
||||
<state>
|
||||
<option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
|
||||
</state>
|
||||
</component>
|
||||
@ -1,13 +0,0 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="Encoding">
|
||||
<file url="file://$PROJECT_DIR$/src/ElmAdminEntry.java" charset="GBK" />
|
||||
<file url="file://$PROJECT_DIR$/src/ElmBusinessEntry.java" charset="GBK" />
|
||||
<file url="file://$PROJECT_DIR$/src/View/AdminView.java" charset="GBK" />
|
||||
<file url="file://$PROJECT_DIR$/src/View/BusinessView.java" charset="GBK" />
|
||||
<file url="file://$PROJECT_DIR$/src/View/Display.java" charset="GBK" />
|
||||
<file url="file://$PROJECT_DIR$/src/dao/AdminDaoImpl.java" charset="GBK" />
|
||||
<file url="file://$PROJECT_DIR$/src/dao/BusinessDaoImpl.java" charset="GBK" />
|
||||
<file url="file://$PROJECT_DIR$/src/jdbc/JDBC.java" charset="GBK" />
|
||||
</component>
|
||||
</project>
|
||||
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue
Block a user