在执行基本方法重载程序时，我始终收到以下错误：

sh-4.3 $ javac HelloWorld . Java < br > HelloWorld . Java:10:错误:方法show()已在类hello world中定义< br > static void show()< br > hello world . Java:25:错误:方法show(int，int)已在类hello world中定义< br> static void show(int a，int b)
2错误

该程序的代码如下：

    public class HelloWorld{
       static int show()
         {
             int c = 5+10;
             System.out.println("hello");
             return c;
         }
        static void show()
         {
             int c = 5+10;
             System.out.println("void"+c);
         }
         static int show(int a,int b)
         {
             int c = a+b;
             System.out.println("hello");
             return c;
         }
         static void show(int a,int b)
         {
             int c = a+b;
             System.out.println("hello void args"+c);
         }
     public static void main(String []args){
    int a=5,b=5;
        int c=show();
        System.out.println("hello"+c);
        show();
        c= show(a,b);
        System.out.println("hello"+c);
        show(a,b);

     }
}