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SetDemo.java
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32 lines (30 loc) · 852 Bytes
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package com.test.basic.chapter5;
import java.util.HashSet;
import java.util.Set;
/**
* Created by beigui on 2016/3/15.
* 功能：Set集合，动态、值不能重复
*/
public class SetDemo {
public static void main(String[] args) {
Set<String> set = new HashSet<String>();
set.add("test");
set.add("test");
set.add("set1");
set.add("aaa");
set.add("bbb");
//不保证迭代顺序，比方字母排序，数字排序
for (String item : set) {
System.out.println(item);
}
// Set<Person> pSet = new HashSet<Person>();
// Person p1 = new Person(1111111);
// Person p2 = new Person(1111111);
// pSet.add(p1);
// pSet.add(p2);
//
// for (Person item : pSet) {
// System.out.println(item);
// }
}
}