Java Random String getRandomString(int length)

Description

get Random String

License

Open Source License

Declaration

public static String getRandomString(int length) 

Method Source Code

//package com.java2s;

import java.util.Random;

public class Main {
    public static String getRandomString(int length) {
        Random random = new Random();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < length; i++) {
            int number = random.nextInt(3);
            long result = 0;
            switch (number) {
            case 0:
                result = Math.round(Math.random() * 25 + 65);
                sb.append(String.valueOf((char) result));
                break;
            case 1:
                result = Math.round(Math.random() * 25 + 97);
                sb.append(String.valueOf((char) result));
                break;
            case 2:
                sb.append(String.valueOf(new Random().nextInt(10)));
                break;
            }/*  ww w  .  jav  a2 s .  c om*/
        }
        return sb.toString();
    }
}

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