20161227問題解析請點擊今日問題下方的“【Java每日一題】20161228”查看(問題解析在公眾號首發(fā),公眾號ID:weknow619)
package Dec2016;
import java.util.ArrayList;
import java.util.List;
public class Ques1228 {
public static void main(String[] args) {
Student stu01 = new Student("001");
Student stu02 = new Student("001 "); // stu02中001后面有個空格
List<Student> students = new ArrayList<Student>();
students.add(stu01);
students.add(stu02);
System.out.println("students是否包含001學(xué)號:"+students.contains(stu01));
System.out.println("students是否包含002學(xué)號:"+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;
}
}
今日問題:
請問主程序中輸出結(jié)果是什么羽峰?(點擊以下“【Java每日一題】20161228”查看20161227問題解析)