src/jdk.internal.opt/share/classes/jdk/internal/joptsimple/internal/SimpleOptionNameMap.java

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/*
 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, the following notice accompanied the original version of this
 * file:
 *
 * The MIT License
 *
 * Copyright (c) 2004-2015 Paul R. Holser, Jr.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
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 * The above copyright notice and this permission notice shall be
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package jdk.internal.joptsimple.internal;

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

/**
 * <p>An {@code OptionNameMap} which wraps and behaves like {@code HashMap}.</p>
 */
public class SimpleOptionNameMap<V> implements OptionNameMap<V> {
    private final Map<String, V> map = new HashMap<>();

    @Override
    public boolean contains( String key ) {
        return map.containsKey( key );
    }

    @Override
    public V get( String key ) {
        return map.get( key );
    }

    @Override
    public void put( String key, V newValue ) {
        map.put( key, newValue );
    }

    @Override
    public void putAll( Iterable<String> keys, V newValue ) {
        for ( String each : keys )
            map.put( each, newValue );
    }

    @Override
    public void remove( String key ) {
        map.remove( key );
    }

    @Override
    public Map<String, V> toJavaUtilMap() {
        return new HashMap<>( map );
    }
}