重载（函数）

public class classes1 {
     public static void main(String[] args) {
           count(1,2)
           count(1,‘a‘)
      }
     
      public static void count(int a. int b){
        a = a + b;
       }

      public static void count(int a ;char b){
        a = b;
       }
}

public class classes2 {
     public static void main(String[] args) {
        count(1);
         int c = 0;
        count(1,2,c)
     }

      public static void count(int a){
           int b;
           b = a; 
      }
 
      public static void count(int a; int b; int c){
          c = a + b;
      }
}