面向对象（上）--- 方法参数的值传递

1.1.14 方法参数的值传递

public static void main(String[] args) { int m=10; int n=m; n=20; System.out.println(m); System.out.println(n); Person q=new Person(); Person w=q; q.name="aaa"; System.out.println(w.name); }

此时没有交换成功，m=10，n=20

public static void main(String[] args) { int m=10; int n=20; jiaohuan(m,n); System.out.println(m); System.out.println(n); } public static void jiaohuan(int m,int n){ int temp=m; m=n; n=temp; System.out.println(m); System.out.println(n); }