Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

ʹÓÃJavaµÄ´úÀí»úÖÆ½øÐÐÈÕÖ¾Êä³ö

ʾÀý´úÂëÈçÏÂ:
//LogProxy.java
package com.gc.action;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
public class LogProxy implements InvocationHandler{
 private Logger logger = Logger.getLogger(this.getClass().getName());
 private Object delegate;
 //°ó¶¨´úÀí¶ÔÏó
 public Object bind(Object delegate){
  this.delegate = delegate;
  return Proxy.newProxyInstance(delegate.getClass().getClassLoader(),
    delegate.getClass().getInterfaces(),this);
 }
 //Õë¶Ô½Ó¿Ú±à³Ì
 public Object invoke(Object proxy,Method method,Object[] args) throws Throwable {
  Object result = null;
  try{
   //ÔÚ·½·¨µ÷ÓÃǰºó½øÐÐÈÕÖ¾Êä³ö
   logger.log(Level.INFO,args[0]+" ¿ªÊ¼ÉóºËÊý¾Ý...");
   result = method.invoke(delegate, args);
   logger.log(Level.INFO,args[0]+" ÉóºËÊý¾Ý½áÊø...");
  }catch(Exception e){
   logger.log(Level.INFO,e.toString());
  }
  return result;
 }
}
//TimeBookInterface.java
package com.gc.impl;
//Õë¶Ô½Ó¿Ú±à³Ì
public interface TimeBookInterface {
 public void doAuditing(String name);
}
//TimeBook.java
package com.gc.action;
import com.gc.impl.TimeBookInterface;
public class TimeBook implements TimeBookInterface {
 //ÉóºËÊý¾ÝµÄÏà¹Ø³ÌÐò
 public void doAuditing(String name){
  System.out.println("ÉóºË³ÌÐò");
 }
}
//TestHelloWorld.java
package com.gc.test;
import com.gc.action.LogProxy;
import com.gc.action.TimeBook;
import com.gc.impl.TimeBookInterface;
public class TestHelloWorld {
 public static void main(String[] args){
  //ʵÏÖÁ˶ÔÈÕÖ¾ÀàµÄÖØÓÃ
  LogProxy logProxy = new LogProxy();
  TimeBookInterface timeBookProxy = (TimeBookInterface


Ïà¹ØÎĵµ£º

È«ÃæÕÆÎÕjavaö¾ÙÀàÐÍ

ö¾ÙÀàÐÍÊÇJDK5.0µÄÐÂÌØÕ÷¡£SunÒý½øÁËÒ»¸öȫеĹؼü×ÖenumÀ´¶¨ÒåÒ»¸öö¾ÙÀà¡£ÏÂÃæ¾ÍÊÇÒ»¸öµäÐÍö¾ÙÀàÐ͵͍Ò壺
Java´úÂë
public enum Color{   
    RED,BLUE,BLACK,YELLOW,GREEN   
}  
public enum Color{
RED,BLUE,BLACK,YELLOW,GREEN
}
ÏÔ ......

¡¾×ªÔØ¡¿Javaѧϰ·¾¶

Javaѧϰ·¾¶£¨Ò»£©¹¤¾ßƪ
Ò»¡¢ JDK (Java Development Kit)
JDKÊÇÕû¸öJavaµÄºËÐÄ£¬°üÀ¨ÁËJavaÔËÐл·¾³£¨Java Runtime Envirnment£©£¬Ò»¶ÑJava¹¤¾ßºÍJava»ù´¡µÄÀà¿â(rt.jar)¡£²»ÂÛʲôJavaÓ¦Ó÷þÎñÆ÷ʵÖʶ¼ÊÇÄÚÖÃÁËij¸ö°æ±¾µÄJDK¡£Òò´ËÕÆÎÕJDKÊÇѧºÃJavaµÄµÚÒ»²½¡£×îÖ÷Á÷µÄJDKÊÇSun¹«Ë¾·¢²¼µÄJDK£¬³ýÁËSunÖ®Í⣬»¹Óкܶ๠......

Javaѧϰ±Ê¼Ç13——ÕýÔò±í´ïʽ

 Ò»¡¢¹¦ÄÜ
     1¡¢×Ö·û´®µÄÆ¥Åä
     2¡¢×Ö·û´®µÄ²éÕÒ
     3¡¢×Ö·û´®µÄÌæ»»
 ¶þ¡¢JavaÖÐÉæ¼°µÄÀà
     java.lang.StringÀà¡¢java.util.regex.MatcherÀà¡¢java.util.regex.PatternÀà
Èý¡¢³õ²½Á˽â
   & ......

Java¶ÁÈ¡Îļþ(ÒÔºó¼ÌÐøÌí¼Ó)

package cf.java.study.java.io;
import java.io.File;
import java.io.FileInputStream;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class FileTests {
@Before
public void set ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ