Java示例方法重载示例

public class Calculation {

   void sum(int a,int b){System.out.println(a+b);}

   void sum(int a,int b,int c){System.out.println(a+b+c);}



   public static void main(String args[]){

      Calculation cal = new Calculation();

      cal.sum(20,30,60);

      cal.sum(20,20);

   }

}