Java Random String generateRandomString()

Description

Generates random string

License

Apache License

Declaration

public static String generateRandomString() 

Method Source Code

//package com.java2s;
/*//  www .j a  v  a  2s  .  c o  m
 * org.fsola
 *
 * File Name: Utils.java
 *
 * Copyright 2014 Dzhem Riza
 *
 * 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.
 */

import java.util.Random;

public class Main {
    public static Random RAND = new Random();
    private static final int MIN_NO_OF_CHARS = 5;
    private final static String CHARS = "qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM1234567890";

    /**
     * Generates random string
     *
     * @return
     */
    public static String generateRandomString() {
        int s = RAND.nextInt(CHARS.length());
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < MIN_NO_OF_CHARS + s; ++i) {
            sb.append(CHARS.charAt(RAND.nextInt(CHARS.length())));
        }

        return sb.toString();
    }
}

Related

1. generateRandomCode()
2. generateRandomSentence()
3. generateRandomStr(final int length)
4. generateRandomStr(int length)
5. generateRandomString()
6. generateRandomString()
7. generateRandomString()
8. generateRandomString()
9. generateRandomString()