generate Random String - Java java.util

Java examples for java.util:Random String

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Description

generate Random String

Demo Code


//package com.java2s;
import java.util.Random;

public class Main {
    public static void main(String[] argv) throws Exception {
        System.out.println(generateRandomString());
    }//w  w  w .  j a v  a 2 s  .c o  m

    private static String generateRandomString() {

        StringBuilder generatedValue = new StringBuilder();

        final String[] alphaNum = { "A", "B", "C", "D", "E", "W", "X", "Y",
                "Z", "f", "g", "h", "i", "j", "k", "l", "0", "1", "2", "3",
                "4", "5", "6", "7", "$", "^", "*", "@", "%", "~", "-" };

        int length = alphaNum.length;

        Random r = new Random();
        //24

        for (int i = 0; i < 25; i++) {

            generatedValue.append(alphaNum[r.nextInt(length)]);

        }

        return generatedValue.toString();

    }
}

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