Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.concurrent.atomic.AtomicInteger;

public class Main {
    private final static String str62 = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
    private static final AtomicInteger ATOM_INT = new AtomicInteger(0);

    public final static String create15() {
        StringBuilder sb = new StringBuilder(15);
        sb.append(Long.toHexString(System.currentTimeMillis()));
        String str = longTo36(ATOM_INT.incrementAndGet());
        if (str.length() == 1) {
            sb.append("000").append(str);
        } else if (str.length() == 2) {
            sb.append("00").append(str);
        } else if (str.length() == 3) {
            sb.append("0").append(str);
        } else {
            sb.append(str);
        }
        return sb.toString();
    }

    public static final String longTo36(long num) {
        return ten2Any(num, 36);
    }

    private static final String ten2Any(long num, int base) {
        StringBuilder sb = new StringBuilder(7);
        while (num != 0) {
            sb.append(str62.charAt((int) (num % base)));
            num /= base;
        }
        return sb.reverse().toString();
    }
}