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0284885 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | package HashSet_package;
import java.util.LinkedHashSet;
public class LinkedHashSet_demo {
public static void main(String[] args) {
//1、创建三个学生对象
Student s1 = new Student("zhangsan", 23);
Student s2 = new Student("lisi", 24);
Student s3 = new Student("wangwu", 25);
Student s4 = new Student("zhangsan", 23);
//2、创建集合用来添加学生
LinkedHashSet<Student> lhs = new LinkedHashSet<>();
//3、添加元素
System.out.println(lhs.add(s1));
System.out.println(lhs.add(s2));
System.out.println(lhs.add(s3));
System.out.println(lhs.add(s4));
//4、打印集合，反映添加的先后顺序
System.out.println(lhs);
}
}
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