Java MD5 validateMD5(String md5String)

Description

Returns true if the String could be a md5

License

Apache License

Parameter

Parameter	Description
md5String	String to test : could it be a MD5, or there is no way ?

Exception

Parameter	Description
IllegalArgumentException	if the md5String is null

Return

true if the String could be a md5

Declaration

public static boolean validateMD5(String md5String) 

Method Source Code

//package com.java2s;
/*/*w ww. j  a v  a 2s. c  o m*/
 * Copyright 2007-2011 Nicolas Zozol
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class Main {
    /**
     * Returns true if the String could be a md5
     * @param md5String String to test : could it be a MD5, or there is no way ?
     * @return true if the String could be a md5
     * @throws IllegalArgumentException if the md5String is null
     */
    public static boolean validateMD5(String md5String) {

        if (md5String == null) {
            throw new IllegalArgumentException("md5String is null");
        }

        return md5String.length() == 32 && md5String.matches("([a-z0-9])+");

    }
}

Related

1. md5ToString(byte[] md5sum)
2. md5Update(byte[] inbuf, int inputLen)
3. newMd5()
4. newMD5HashUri(String value)
5. newMd5MessageDigest()