对应于数组的java.util.Collection.contains。

/* ArrayHelper.java -- Helper methods for handling array operations

   Copyright (C) 1998, 2002 Free Software Foundation, Inc.


This file is part of GNU Classpath.


GNU Classpath 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; either version 2, or (at your option)

any later version.


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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.


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along with GNU Classpath; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301 USA.


Linking this library statically or dynamically with other modules is

making a combined work based on this library.  Thus, the terms and

conditions of the GNU General Public License cover the whole

combination.


As a special exception, the copyright holders of this library give you

permission to link this library with independent modules to produce an

executable, regardless of the license terms of these independent

modules, and to copy and distribute the resulting executable under

terms of your choice, provided that you also meet, for each linked

independent module, the terms and conditions of the license of that

module.  An independent module is a module which is not derived from

or based on this library.  If you modify this library, you may extend

this exception to your version of the library, but you are not

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exception statement from your version. */

//package com.nowjava;/** 来自 N o  w  J a v a . c o m - 时  代  Java**/


public class Main {

    public static void main(String[] argv) throws Exception {

        Object[] array = new String[] { "1", "abc", "level", null,

                "nowjava.com", "asdf 123" };

        Object searchFor = "nowjava.com";

        System.out.println(contains(array, searchFor));

    }


    /**

     * Counterpart to java.util.Collection.contains.

     *

     * @param array the array to search

     * @param searchFor the object to locate

     * @return true if some array element <code>equals(searchFor)</code>

     */

    public static boolean contains(Object[] array, Object searchFor) {/*nowjava.com - 时  代  Java 提 供*/

        return indexOf(array, searchFor) != -1;

    }