check if the two sets are equal - Java java.util

Java examples for java.util:Set Operation

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Description

check if the two sets are equal

Demo Code


//package com.java2s;

import java.util.Set;

public class Main {
    /**//  w  ww. j  a v a 2s.  c  o m
     * check if the two sets are equal
     * 
     * @param set1
     * @param set2
     * @return
     */
    public static boolean isEqualSet(Set<String> set1, Set<String> set2) {
        if (set1 == null && set2 == null) {
            return true;
        } else if (set1 == null || set2 == null) {
            return false;
        }

        if (set1.size() != set2.size()) {
            return false;
        }

        return set2.containsAll(set1);

    }
}

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