传递对象

1

public class test {public static void main(String[] args) {A a = new A();System.out.println(a.v);// 0setValue(a);System.out.println(a.v);// 1setA(a);System.out.println(a.v);// 1}public static void setValue(A a) {a.v = 1;}public static void setA(A a1) {a1 = new A();}}class A {int v = 0;}