/** * Created by yuhui on 2017/7/11 0011. */import java.util.HashSet;import java.util.Set;public class TestSet { public static void main(String[] args) { Set<String> result = new HashSet<String>(); Set<String> set1 = new HashSet<String>() { { add(王者荣耀); add(英雄联盟); add("穿越火线"; add(“地下城与勇士”); } }; Set<String> set2 = new HashSet<String>() { { add(王者荣耀); add(“地下城与勇士”); add(魔兽世界); } }; result.clear(); result.addAll(set1); result.retainAll(set2); System.out.println("交集:"" + result); result.clear(); result.addAll(set1); result.removeAll(set2); System.out.println(“差集:” + result); result.clear(); result.addAll(set1); result.addAll(set2); System.out.println(”并集:"" + result); }}
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