ZipEntry.DEFLATED : ZipEntry « java.util.zip « Java by API

1. Java by API
2. java.util.zip
3. ZipEntry

ZipEntry.DEFLATED

 
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("your.zip");
    Enumeration e = zf.entries();
    while (e.hasMoreElements()) {
      ZipEntry ze = (ZipEntry) e.nextElement();
      String name = ze.getName();

      Date lastModified = new Date(ze.getTime());
      long uncompressedSize = ze.getSize();
      long compressedSize = ze.getCompressedSize();

      int method = ze.getMethod();

      if (method == ZipEntry.STORED) {
        System.out.println(name + " was stored at " + lastModified);
        System.out.println("with a size of  " + uncompressedSize + " bytes");
      } else if (method == ZipEntry.DEFLATED) {
        System.out.println(name + " was deflated at " + lastModified);
        System.out.println("from  " + uncompressedSize + " bytes to " + compressedSize
            + " bytes, a savings of " + (100.0 - 100.0 * compressedSize / uncompressedSize) + "%");
      } else {
        System.out.println(name + " was compressed at " + lastModified);
        System.out.println("from  " + uncompressedSize + " bytes to " + compressedSize
            + " bytes, a savings of " + (100.0 - 100.0 * compressedSize / uncompressedSize) + "%");
      }
    }
  }
}

   
  

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