Java Map Put put(Map map, K key, V value)

Description

put

License

Apache License

Declaration

public static <K, V> Map<K, V> put(Map<K, V> map, K key, V value) 

Method Source Code

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

import java.util.Map;

public class Main {

    public static <K, V> Map<K, V> put(Map<K, V> map, K key, V value) {
        V valueOld = map.get(key);/*ww w .  j av  a2s  . c  o  m*/
        if (valueOld == null) {
            map.put(key, value);
        }
        return map;
    }
}

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