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abstract public class Subject
{
abstract public void request();
}
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public class RealSubject extends Subject
{
public RealSubject()
{
}
public void request()
{
System.out.println("from real subject.");
}
}
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public class ProxySubject extends Subject
{
private RealSubject realSubject; //ÒÔÕæʵ½ÇÉ«×÷Ϊ´úÀí½ÇÉ«µÄÊôÐÔ
public ProxySubject()
{
}
public void request() //¸Ã·½·¨·â×°ÁËÕæʵ¶ÔÏóµÄrequest·½·¨
{
preRequest();
if( realSubject == null )
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import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader ;
import java.io.BufferedReader;
public class Exec_Output{
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[url]http://www.theserverside.net/tt/articles/showarticle.tss?id=InteropGuide[/url]
In the heterogeneous world of enterprise computing, interoperability is no longer a luxury but a necessity. The multip ......
/************************************************
MD5 Ëã·¨µÄJava Bean
*************************************************/
package beartool;
import java.lang.reflect.*;
public class MD5 {
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