Java Random String generateRandom(int num)

Description

generate Random

License

Open Source License

Declaration

public static String generateRandom(int num) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    public static String generateRandom(int num) {
        char[] temp = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f',
                'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
                'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
                'U', 'V', 'W', 'X', 'Y', 'Z' };
        int size = temp.length;
        StringBuffer bu = new StringBuffer();
        for (int i = 0; i < num; i++) {
            int r = (int) (Math.random() * size);
            bu.append(temp[r]);//w  w w .ja  v a 2s. c  o  m
        }

        return bu.toString();
    }
}

Related

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