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Library providing immutable/persistent collection classes for Java. While collections are immutable they provide methods for adding and removing values by creating new modified copies of themselves. Each copy shares almost all of its structure with other copies to minimize memory consumption.

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///###////////////////////////////////////////////////////////////////////////
//
// Burton Computer Corporation
// http://www.burton-computer.com
//
// Copyright (c) 2013, Burton Computer Corporation
// All rights reserved.
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package org.javimmutable.collections.hash;

import org.javimmutable.collections.JImmutableMap;
import org.javimmutable.collections.JImmutableSet;
import org.javimmutable.collections.common.AbstractJImmutableSet;

public class JImmutableHashSet
        extends AbstractJImmutableSet
{
    @SuppressWarnings("unchecked")
    private static final JImmutableHashSet EMPTY = new JImmutableHashSet(JImmutableHashMap.of());

    public JImmutableHashSet(JImmutableMap map)
    {
        super(map);
    }

    @SuppressWarnings("unchecked")
    public static  JImmutableHashSet of()
    {
        return (JImmutableHashSet)EMPTY;
    }

    @Override
    protected JImmutableSet create(JImmutableMap map)
    {
        return new JImmutableHashSet(map);
    }

    @Override
    protected JImmutableMap emptyMap()
    {
        return new JImmutableHashMap();
    }
}