org.jimcat.util.SetUtils.java Source code

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Here is the source code for org.jimcat.util.SetUtils.java

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/*
 *  This file is part of JimCat.
 *
 *  JimCat is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation version 2.
 *
 *  JimCat is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with JimCat; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

package org.jimcat.util;

import java.util.HashSet;
import java.util.Set;

import org.apache.commons.collections.CollectionUtils;

/**
 * A small collection of usefull collection utilities.
 * 
 * $Id$
 * 
 * @author Herbert
 */
public final class SetUtils {

    /**
     * private constructor for util class
     */
    private SetUtils() {
        // to avoid instantiation
    }

    /**
     * This methode is creating an intersection set for the given sets.
     * 
     * @param <T> -
     *            generic type of the sets
     * @param a -
     *            set a
     * @param b -
     *            set b
     * @return returns a set containing the intersection of set a and b
     */
    @SuppressWarnings("unchecked")
    public static <T> Set<T> intersection(Set<T> a, Set<T> b) {
        return new HashSet<T>(CollectionUtils.intersection(a, b));
    }

}