ru.hts.springwebdoclet.util.MultiMap Maven / Gradle / Ivy

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package ru.hts.springwebdoclet.util;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;

/**
 * Simple multi map implementation
 *
 * @author Ivan Sungurov
 */
public class MultiMap extends HashMap> {
    public void putItem(K key, V item) {
        Collection list = get(key);

        if (list == null) {
            list = new ArrayList();
            put(key, list);
        }

        list.add(item);
    }
}