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java ²å¼þ¼ÓÔØ

package tao.hai.bing;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
public class LoadJar {
 public static void main(String[] args)
 {
  Syst ......

java zip ½âѹËõ

import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.logging.Logger; ......

java Á½¸öʱ¼ä¶ÎÓжàÉÙÌì

public static void main(String args[]){
   
     Date calr1=new Date(2010, 3,1);
     Date calr2=new Date(2010,3,31);
  
     Long n=calr2.getTime()-calr1.getTime();
     int a=(int)(n/ ......

pki javaÏà¹Ø´úÂë²Î¿¼

keytool -genkey -dname "CN=demo, OU=softDept, O=company,
L=puddong,S=shanghai, C=cn" -alias demo -keyalg RSA -keysize 1024
-keystore demoKeystore -validity 3650 -storepass storePwd -keypass
demoPwd
Éú³É±£´æ¹«Ô¿ºÍ˽ԿµÄÃÜÔ¿²Ö¿â£¬±£´æÔÚdemoKeystoreÎļþÖС£ÕâÀïstorepass  ......
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