Java ThreadLocalRandom randomString(int minLength, int maxLength)

Description

random String

License

Apache License

Declaration

public static String randomString(int minLength, int maxLength) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.util.Random;
import java.util.concurrent.ThreadLocalRandom;

public class Main {
    public static String randomString(int minLength, int maxLength) {
        Random random = ThreadLocalRandom.current();
        return randomString(minLength, maxLength, random);
    }/*  w w  w.  j a v  a 2s. c  o  m*/

    public static String randomString(int minLength, int maxLength, Random random) {
        return randomStringBuilder(minLength, maxLength, random).toString();
    }

    public static StringBuilder randomStringBuilder(int minLength, int maxLength, Random random) {
        int length;
        if (minLength > maxLength)
            throw new IllegalArgumentException();
        if (minLength == maxLength) {
            length = minLength;
        } else {
            length = minLength + random.nextInt(maxLength - minLength);
        }
        StringBuilder sb = new StringBuilder(length);
        for (int i = length; i > 0; --i) {
            sb.append((char) (random.nextInt('Z' - 'A') + 'A'));
        }
        return sb;
    }
}

Related

1. randomPer(long num, long divisor)
2. randomReal(float range)
3. randomSeed()
4. randomString()
5. RandomString(int length)
6. randomString(List strings)
7. randomStringArray(int arrayLength, int stringLength)
8. randomWorld()
9. randomWorld()