(Java) Remove a File from a .zip

Demonstrates how to remove a file from a .zip.

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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[])
  {
    // This requires the Chilkat Zip API to have been previously unlocked.
    // See Unlock Chilkat Zip for sample code.

    // First prepare a .zip and write it..
    CkZip zip = new CkZip();

    boolean success;
    zip.NewZip("qa_output/abc.zip");

    // Add some files..
    CkZipEntry entry = zip.AppendString("a.txt","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");

    entry = zip.AppendString("b.txt","bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb");

    entry = zip.AppendString("c.txt","cccccccccccccccccccccccccccccccccccc");

    // Write to qa_output/abc.zip
    // This .zip contains three files: a.txt, b.txt, and c.txt
    success = zip.WriteZipAndClose();

    // -------------------------------------------------------------------
    // Open abc.zip, remove an entry, and re-write.
    CkZip zip2 = new CkZip();
    zip2.OpenZip("qa_output/abc.zip");

    entry = zip2.GetEntryByName("b.txt");
    zip2.DeleteEntry(entry);

    // Write the modified .zip back to "abc.zip"
    success = zip2.WriteZip();

    // To write to a different filename, change the FileName..
    zip2.put_FileName("qa_output/ac.zip");
    success = zip2.WriteZipAndClose();

    System.out.println("success.");
  }
}