refswap2.java

java学习的一些运行实例！我觉得瞒有用

public class RefSwap2 { 
   int value=0; 
   static void swap(RefSwap2 x,RefSwap2 y) { 
       int temp; 
       temp=x.value; 
       x.value=y.value; 
       y.value=temp; 
       System.out.println("x.value = "+x.value+",y.value = "+y.value); 
    } 
    
    public static void main(String args[]) { 
       RefSwap2 n=new RefSwap2();  
       RefSwap2 m=new RefSwap2(); 
       n.value=4;  
       m.value=5; 
       System.out.println("before called"); 
       System.out.println("n.value= "+n.value+",m.value= "+m.value); 
       swap(n,m); 
       System.out.println("after called"); 
       System.out.println("n.value= "+n.value+",m.value= "+m.value); 
    } 
}