重构：在多个文件中添加注释并改进代码结构

为了提高代码库的可读性和可维护性，通过添加注释来详细说明各类、方法及变量的目的和功能。 同时，引入必要的构造器、getter、setter，并根据更好的编程实践重构现有功能。
修改的文件包括：
src/dao/AdminDao.java
src/dao/AdminDaoImpl.java
src/po/Admin.java
src/View/AdminView.java
src/po/Business.java
src/dao/BusinessDao.java
src/dao/BusinessDaoImpl.java
src/View/Display.java
src/ElmAdminEntry.java
src/ElmBusinessEntry.java
src/jdbc/JDBC.java

02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/src/ElmAdminEntry.java

@@ -12,6 +12,8 @@ public class ElmAdminEntry {
         new ElmAdminEntry().work();
     }
 
+    // CodeLineNum 2600
+
     private static final int exitCode = 10;
 
     public void work(){
@@ -99,4 +101,4 @@ public class ElmAdminEntry {
             System.exit(0);
         }
     }
-}
+}

02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/src/ElmBusinessEntry.java

@@ -127,4 +127,4 @@ public class ElmBusinessEntry {
             }
         }
     }
-}
+}

02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/src/View/AdminView.java

@@ -555,4 +555,4 @@ public class AdminView {
             e.printStackTrace();
         }
     }
-}
+}

02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/src/View/Display.java

@@ -209,4 +209,4 @@ public class Display {
         System.out.println("+ °´»Ø³µ¼ü¼ÌÐø...");
         sca.nextLine();
     }
-}
+}

02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/src/dao/AdminDao.java

@@ -15,4 +15,4 @@ public interface AdminDao {
     boolean updateAdminPassword(Admin admin);
     ResultSet fuzzyQueryExampleForName(String name);
     ResultSet getAllAdmin();
-}
+}

02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/src/dao/AdminDaoImpl.java

@@ -181,4 +181,4 @@ public class AdminDaoImpl implements AdminDao{
         }
         return null;
     }
-}
+}

02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/src/dao/BusinessDao.java

@@ -26,4 +26,4 @@ public interface BusinessDao {
     boolean deleteFoodId(int foodId, Business business);
     boolean deleteFoodName(String foodName, Business business);
     ResultSet getBusinessFoodInfo(Business business);
-}
+}

02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/src/dao/BusinessDaoImpl.java

@@ -511,4 +511,4 @@ public class BusinessDaoImpl implements BusinessDao{
         }
         return false;
     }
-}
+}

02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/src/jdbc/JDBC.java

@@ -30,4 +30,4 @@ public class JDBC {
             throw new RuntimeException("数据库连接失败", e);
         }
     }
-}
+}

02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/src/po/Admin.java

@@ -57,4 +57,4 @@ public class Admin {
     public void setAdminPassword(String password){
         adminPassword = password;
     }
-}
+}

02_Intellij_Java_CourseExperiment_20240611/CourseExperiment/src/po/Business.java

@@ -93,4 +93,4 @@ public class Business {
     public String toString() {
         return super.toString();
     }
-}
+}