以下程序运行结果是 public class ShowTest { public static void main(String[] args) { // TODO Auto-generated method stub Cat cat1 = new Cat(); Cat cat2 = new Cat(); Cat cat3 = new Cat(); cat1.setName("小花"); cat2.setName("小白"); cat3.setName("小黄"); cat2=cat1; cat3=cat2; cat1=cat3; cat1.speak(); } } class Cat { private String name; public void setName(String _name) { name = _name; } public void speak(){ System.out.println(name); } }