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Zip socket

import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.zip.ZipInputStream; import java.util.zip.ZipOutputStream; import java.net.Socket;   class ZipSocket extends Socket {     private InputStream in;     private OutputStream out;     public ZipSocket() { super(); }     public ZipSocket(String host, int port)          throws IOException {         super(host, port);     }     public InputStream getInputStream()          throws IOException {         if (in == null) {             in = new ZipInputStream(super.getInputStream());         }         return in;     }     public OutputStream getOutputStream()          throws IOException {         if (out == null) {             out = new ZipOutputStream(super.getOutputStream());         }         return out;     }         public synchronized void close() throws IOException {         OutputStream o = getOutputStream();         o.flush();   super.close();     } }