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

public class ZipLocate {

//-------------------------------------------------------------------
// static utility method to locate and return a handle to a ZIP entry
//-------------------------------------------------------------------
public static DataInputStream zipLocate(
								String filename, String zipEntryName)
									throws ZipException, IOException {
FileInputStream fin;
ZipInputStream in;
ZipEntry entry;
int entrySize;

	fin = new FileInputStream(filename);
	in	= new ZipInputStream(fin);

	entry = in.getNextEntry();
	while ( entry != null ) {
		if ( entry.getName().equals(zipEntryName) ) {
			break;
		}
		entry = in.getNextEntry();
	}
	if ( ! entry.getName().equals(zipEntryName) ) {
		in.close();
		return null;
	}
	return new DataInputStream(in);
}
//-------------------------------------------------------------------
// static main contains self-test code.
//-------------------------------------------------------------------
public static void main(String[] args) {
boolean OK;

	try {
		OK = ( zipLocate("test.jar", "META-INF/MANIFEST.MF") != null);
	} catch (ZipException zipProblem) {
		System.out.println(zipProblem);
		OK = false;
	} catch (IOException IOfailed) {
		System.out.println(IOfailed);
		OK = false;
	}

	String report = OK ? "OK" : "failed";
	System.out.println("ZipLocate test: " + report);
}
} // End of Class ZipLocate