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 {
    private static final String src_all = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

    public static String getRandomString(int length) {
        StringBuffer r = new StringBuffer(length);
        String src = src_all;/*from www. jav a2s  .c om*/
        for (int i = 0; i < length; i++) {
            r.append(getRandomStr(src));
        }
        return r.toString();
    }

    private static final String getRandomStr(String src) {
        if (null == src || "".equals(src)) {
            return "";
        }
        Random random = new Random();
        return String.valueOf(src.charAt(random.nextInt(src.length())));
    }
}

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