Java Random String generateRandomChain(int length)

Description

generate Random Chain

License

Apache License

Declaration

public static String generateRandomChain(int length) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2012 I3M-GRyCAP//ww w .  j a  va2  s  .co  m
 * 
 * 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 {
    private static String NUMBERS = "0123456789";
    private static String LETTERSUP = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    private static String LETTERDOWN = "abcdefghijklmnopqrstuvwxyz";

    public static String generateRandomChain(int length) {
        String pswd = "";
        String key = NUMBERS + LETTERSUP + LETTERDOWN;
        for (int i = 0; i < length; i++)
            pswd += (key.charAt((int) (Math.random() * key.length())));
        return pswd;
    }
}

Related

1. createRandomString(final int size)
2. createRandomString(int length)
3. createRandomWord(boolean startWithCapital)
4. generateRandom(int num)
5. generateRandom(Integer digits)
6. generateRandomCharacters(int N)
7. generateRandomCode()
8. generateRandomSentence()
9. generateRandomStr(final int length)