Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.HashMap;

import java.util.Map;

public class Main {
    /**
     * Assign or make new map from source map. Use HashMap for new map.
     * 
     * @param src
     *            source map
     * @param dst
     *            destination map
     * @return dst or new map if dst null
     */
    public static <K, V> Map<K, V> instanceMap(Map<K, V> src, Map<K, V> dst) {
        Map<K, V> ret = null;
        if (src != null) {
            if (dst == null) {
                dst = new HashMap<>();
            }
            dst.clear();
            dst.putAll(src);
            ret = dst;
        }
        return ret;
    }
}