代码
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import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
public class HashSetDemo4 {
/**
* 静态内部类：慕课网学生
*/
static class ImoocStudent {
private String nickname;
private String position;
public ImoocStudent() {
}
public ImoocStudent(String nickname, String position) {
this.setNickname(nickname);
this.setPosition(position);
}
public String getNickname() {
return nickname;
}
public void setNickname(String nickname) {
this.nickname = nickname;
}
public String getPosition() {
return position;
}
public void setPosition(String position) {
this.position = position;
}
@Override
public String toString() {
return "ImoocStudent{" +
"nickname='" + nickname + '\'' +
", position='" + position + '\'' +
'}';
}
}
public static void main(String[] args) {
Set<ImoocStudent> hashSet = new HashSet<>();
// 实例化3个慕课网学生对象
ImoocStudent imoocStudent1 = new ImoocStudent("Colorful", "服务端工程师");
ImoocStudent imoocStudent2 = new ImoocStudent("Lillian", "客户端工程师");
ImoocStudent imoocStudent3 = new ImoocStudent("小慕", "架构师");
// 新增元素
hashSet.add(imoocStudent1);
hashSet.add(imoocStudent2);
hashSet.add(imoocStudent3);
// 使用Iterator遍历hashSet
Iterator<ImoocStudent> iterator = hashSet.iterator();
System.out.println("迭代器的遍历结果为：");
while (iterator.hasNext()) {
System.out.println(iterator.next());
}
// 查找并删除
if (hashSet.contains(imoocStudent1)) {
hashSet.remove(imoocStudent1);
}
System.out.println("删除nickname为Colorful的对象后，集合元素为：");
System.out.println(hashSet);
}
}
运行结果