package com.bjpowernode.t01list;

import java.util.ArrayList;

/*

* 向集合中添加自定义类型

*/

public class TestList04 {

public static void main(String[] args) {

ArrayList list = new ArrayList();

Student s1 = new Student("1001","jack",19);

Student s2 = new Student("1002","paul",20);

Student s3 = new Student("1000","james",16);

Student s4 = new Student("1006","wade",17);

Student s6 = new Student("1006","wade",17);

Student s5 = new Student("1008","curry",12);

list.add(s4);

list.add(s1);

list.add(s2);

list.add(s3);

//判断集合中是否包含传入的对象

//contains方法底层实际上就是调用了对象的equals方法

//所以建议在自定义类型的时候要重写equals方法

if(list.contains(s6)) {

list.add(s5);

}

for(int i=0; i<list.size();i++) {

System.out.println(list.get(i));

}

}

}