Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.Random;

public class Main {
    public static String uuid() {
        // return UUID.randomUUID().toString().substring(0, 24);
        return myUUID();
    }

    public static String myUUID() {
        StringBuilder sb = new StringBuilder();
        int start = 48, end = 58;
        appendChar(sb, start, end);
        appendChar(sb, 65, 90);
        appendChar(sb, 97, 123);
        String charSet = sb.toString();
        StringBuilder sb1 = new StringBuilder();
        for (int i = 0; i < 24; i++) {
            int len = charSet.length();
            int pos = new Random().nextInt(len);
            sb1.append(charSet.charAt(pos));
        }
        return sb1.toString();
    }

    public static void appendChar(StringBuilder sb, int start, int end) {
        int i;
        for (i = start; i < end; i++) {
            sb.append((char) i);
        }
    }
}