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1. Multiply-Thread
Locks offer two primary features: mutual exclusion and visibility. Mutual exclusion means only one thread at a time may hold a given lock, so only one thread at a time will be using the shared data. Visibility is to ensure that changes made to shared data prior to releasing a lo ......
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package com.test.j2se;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class MD5 {
/**Êý¾Ý¼ÓÃÜ
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
MessageDigest code = MessageD ......
public static boolean isCheckN(String pInput) {
String regEx = "^[0-9]+$";
Pattern p = Pattern.compile(regEx);
Matcher m = p.matcher(pInput);
......