List the Zip method in Java

/*from  ww  w.  j  a  va2 s . com*/
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");
      }
    }
  }
}