Java基础方法重载的要求

public class OverloadTest03{
    public static void main(String[] args){
       m1();
     m1(2);
     m2(1,2.0);
     m2(1.0,2);
     m3(2);
     m3(1L);
  }
  public static void m1(){};
  public static void m1(int a){};
  public static void m2(int a,double b){};
  public static void m2(double a,int b){};
  public static void m3(int x){};
  public static void m3(long y){};
  //编译错误：以下不是方法重载，是发生了方法重复了
  // public static void m4(int a,int b){};
  // public static void m4(int b,int a){};
}