import java.util.Date;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
public class Main {
public static void main(String[] args) throws Exception {
ZipFile zf = new ZipFile("a.zip");
Enumeration e = zf.entries();
while (e.hasMoreElements()) {
ZipEntry ze = (ZipEntry) e.nextElement();
String name = ze.getName();
long uncompressedSize = ze.getSize();
long compressedSize = ze.getCompressedSize();
long crc = ze.getCrc();
int method = ze.getMethod();
String comment = ze.getComment();
System.out.println(name + " was stored at " + new Date(ze.getTime()));
if (method == ZipEntry.STORED) {
System.out.println("with a size of " + uncompressedSize + " bytes");
} else if (method == ZipEntry.DEFLATED) {
System.out.println("from " + uncompressedSize + " bytes to " + compressedSize);
} else {
System.out.println("from " + uncompressedSize + " bytes to " + compressedSize);
}
System.out.println("Its CRC is " + crc);
if (comment != null && !comment.equals("")) {
System.out.println(comment);
}
if (ze.isDirectory()) {
System.out.println(name + " is a directory");
}
}
}
}