20161227 问题解析请点击今日问题下方的 "【Java 每日一题】20161228" 查看
- package Dec2016;
- import java.util.ArrayList;
- import java.util.List;
- public class Ques1228 {
- public static void main(String[] arg) {
- Student stu01 = new Student("001");
- Student stu02 = new Student("001 "); // stu02中001后面有个空格 List students = new ArrayList(); students.add(stu01); students.add(stu02); System.out.println("students是否包含001学号:"+students.contains(stu01)); System.out.println("students是否包含002学号:"+students.contains(stu02)); } } class Student{ private String stuId; public Student(String stuId) { super(); this.stuId = stuId; } public String getStuId() { return stuId; } public void setStuId(String stuId) { this.stuId = stuId; } @Override public boolean equals(Object obj) { if(obj instanceof Student){ Student stu = (Student) obj; return stuId.equalsIgnoreCase(stu.getStuId().trim()); } return false; } }
今日问题:
请问主程序输出结果是什么?(点击以下 "【Java 每日一题】20161228" 查看 20161227 问题解析)
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