Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.HashMap;
import java.util.Map;

public class Main {
    /**
     * Clones the lhs map and add all things from the
     * rhs map.
     *
     * @param lhs the first map
     * @param rhs the second map
     * @return the merged map
     */
    public static Map merge(Map lhs, Map rhs) {

        Map result = null;

        if ((lhs == null) || (lhs.size() == 0)) {
            result = copy(rhs);
        } else if ((rhs == null) || (rhs.size() == 0)) {
            result = copy(lhs);
        } else {
            result = copy(lhs);
            result.putAll(rhs);
        }

        return result;
    }

    /**
     * Clones a map.
     *
     * @param source the source map
     * @return the clone of the source map
     */
    public static Map copy(Map source) {

        if (source == null) {
            return null;
        }

        Map result = new HashMap();
        result.putAll(source);
        return result;
    }

}