Java Random String getRandomString(int length, Random rnd)

Description

get Random String

License

Apache License

Declaration

public static String getRandomString(int length, Random rnd) 

Method Source Code

//package com.java2s;
/*// w w  w.ja va2s .  co m
 * Copyright 2009-2013 by The Regents of the University of California
 * 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 from
 * 
 *     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 String getRandomString(int length, Random rnd) {
        String s = Long.toHexString(Double.doubleToLongBits(rnd.nextDouble()));
        StringBuilder strBuilder = new StringBuilder();
        for (int i = 0; i < s.length() && i < length; i++) {
            strBuilder.append(s.charAt(Math.abs(rnd.nextInt()) % s.length()));
        }
        return strBuilder.toString();
    }
}

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