java guava 集合的操作：交集、差集、并集

Java8两个集合(List)取交集、并集、差集、去重并集
java guava 集合的操作：交集、差集、并集

开源地址：https://github.com/google/guava

jar包下载：http://maven.outofmemory.cn/com.google.guava/guava/

 
import java.util.Set;
 
import com.google.common.collect.Sets;
import com.google.common.collect.Sets.SetView;
 
/**
 * 集合的操作：交集、差集、并集
 * Sets.intersection()交集
 * Sets.difference()差集
 * Sets.union()并集
 */
public class Test04 {
 
	public static void main(String[] args) {
		Set<Integer> sets = Sets.newHashSet(1, 2, 3, 4, 5, 6);
		Set<Integer> sets2 = Sets.newHashSet(3, 4, 5, 6, 7, 8, 9);
		// 交集
		System.out.println("交集为：");
		SetView<Integer> intersection = Sets.intersection(sets, sets2);
		for (Integer temp : intersection) {
			System.out.println(temp);
		}
		// 差集
		System.out.println("差集为：");
		SetView<Integer> diff = Sets.difference(sets, sets2);
		for (Integer temp : diff) {
			System.out.println(temp);
		}
		// 并集
		System.out.println("并集为：");
		SetView<Integer> union = Sets.union(sets, sets2);
		for (Integer temp : union) {
			System.out.println(temp);
		}
	}
}

转载与：https://blog.csdn.net/huanyinghanlang/article/details/78774652