import java.io.*;
import java.util.jar.*;
import java.util.zip.*;

/**
 * @version 1.0 2002-04-29
 * @author Takashi KOBAYASHI
 */
public class ex1 {
	static String filename = "jis.jar";
	static String readentry = "jarscape.java";

	public static void main( String[] args ) {
		try {
		JarInputStream jis = new JarInputStream( new BufferedInputStream( new FileInputStream( filename ) ) );

		JarEntry je;
		while( ( je = jis.getNextJarEntry() ) != null ) {
			System.out.println( je.getName() );

			if( je.getName().equals( readentry ) ) {
				int len;
				int bufsize = 1024;
				byte[] buf = new byte[bufsize];
				ByteArrayOutputStream baos = new ByteArrayOutputStream();

				while( jis.available() > 0 && ( len = jis.read( buf, 0, bufsize ) ) != -1 ) {
					baos.write( buf, 0, len );
				}

				System.out.println( baos.toString() );
			}
		}
		}
		catch( IOException ioe ) {
			ioe.printStackTrace();
		}
	}
}