重写toString方法

package test;

public class TestObject {
	public static void main(String[] args) {
		//Object obj;
		TestObject to = new TestObject();
		System.out.println(to.toString());
		
		Person2 p2 = new Person2("西西", 6);
		System.out.println(p2.toString());
	}
	
	public String toString() {
		 return "测试Obect对象";
	 }

}
class Person2{
	String name;
	int age;
	
	public String toString() {
		 return name+",年龄："+age;
	 }
	//重写构造器
	public Person2(String name,int age) {
		this.name = name;
		this.age = age;
	}
}

测试Obect对象
西西,年龄：6