Unzip Selected Files from a Zip Archive

Demonstrates how to iterate over the files contained within a .zip and unzip specific files.

 Chilkat Java Library Downloads for Windows, Linux, and MAC OS X

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    CkZip zip = new CkZip();

    boolean success;

    //  Any string unlocks the component for the 1st 30-days.
    success = zip.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        System.out.println(zip.lastErrorText());
        return;
    }

    success = zip.OpenZip("my_photos.zip");
    if (success != true) {
        System.out.println(zip.lastErrorText());
        return;
    }

    String unzipDir;
    unzipDir = "c:/temp/unzipDir";

    int n;

    //  Get the number of files and directories in the .zip
    n = zip.get_NumEntries();
    System.out.println(n);

    CkZipEntry entry;

    int i;
    for (i = 0; i <= n - 1; i++) {

        entry = zip.GetEntryByIndex(i);
        if (entry.get_IsDirectory() == false) {
            //  (the filename may include a path)
            System.out.println(entry.fileName());

            //  Your application may choose to unzip this entry
            //  based on the filename.
            //  If the entry should be unzipped, then call Extract(unzipDir)
            success = entry.Extract(unzipDir);
            if (success != true) {
                System.out.println(entry.lastErrorText());
                return;
            }

        }

    }

  }
}