Java Collection Contain containsInstanceOf(Collection collection, Class c)

Description

Returns true if the collections contains any object that is an instance of the specified class, and false otherwise.

License

Open Source License

Parameter

Parameter	Description
collection	the collection.
c	the class.

Return

A boolean.

Declaration

public static boolean containsInstanceOf(Collection collection, Class c) 

Method Source Code

//package com.java2s;
/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.//from   ww w.  j a va  2s  .c  o m
 *
 * This library 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * ------------------
 * TestUtilities.java
 * ------------------
 * (C) Copyright 2007, 2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes:
 * --------
 * 08-Jun-2007 : Version 1 (DG);
 *
 */

import java.util.Collection;
import java.util.Iterator;

public class Main {
    /**
     * Returns <code>true</code> if the collections contains any object that
     * is an instance of the specified class, and <code>false</code> otherwise.
     *
     * @param collection  the collection.
     * @param c  the class.
     *
     * @return A boolean.
     */
    public static boolean containsInstanceOf(Collection collection, Class c) {
        Iterator iterator = collection.iterator();
        while (iterator.hasNext()) {
            Object obj = iterator.next();
            if (obj != null && obj.getClass().equals(c)) {
                return true;
            }
        }
        return false;
    }
}

Related

1. containsIgnoreCase(Collection l, String s)
2. containsIgnoreCase(String searchedWord, Collection words)
3. containsIgnoreCase4Collections(Collection c, String s)
4. containsInstance(Collection collection, Object element)
5. containsInstance(Collection collection, Object element)
6. containsKey(Collection keys, String key)
7. containsNo(Collection baseList, Collection valueList)
8. containsNone(Collection container, Collection other)
9. containsNoNull(final Collection c, final String s)