Java Random String getRandomString(int size)

Description

get Random String

License

Apache License

Declaration

public static String getRandomString(int size) 

Method Source Code

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

import java.util.Random;

public class Main {
    private final static char[] c = { '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', 'q', 'w', 'e', 'r', 't',
            'y', 'u', 'i', 'o', 'p', 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', 'z', 'x', 'c', 'v', 'b', 'n', 'm',
            'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', 'Z', 'X',
            'C', 'V', 'B', 'N', 'M' };
    private final static int CHART_LENGHT = c.length;

    public static String getRandomString(int size) {
        Random random = new Random();
        StringBuffer sb = new StringBuffer(size);
        for (int i = 0; i < size; i++) {
            sb.append(c[Math.abs(random.nextInt(CHART_LENGHT))]);
        }/*www.  j av a  2s. c  o m*/
        return sb.toString();
    }
}

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