Java Map Merge merge(Map first, Map second)

Description

merge

License

Apache License

Declaration

public static Map<String, Object> merge(Map<String, Object> first, Map<String, Object> second) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.util.*;

public class Main {
    public static Map<String, Object> merge(Map<String, Object> first, Map<String, Object> second) {
        if (second == null || second.isEmpty())
            return first;
        if (first == null || first.isEmpty())
            return second;
        Map<String, Object> combined = new HashMap<>(first);
        combined.putAll(second);//from w  w  w.j  a  va 2s.  com
        return combined;
    }
}

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