Unzip a Single File by Index

Unzip a single file by index.

Download Chilkat Java Library

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;
    }

    //  How many files and directory entries are in this .zip?
    int n;
    n = zip.get_NumEntries();
    System.out.println("Num entries = " + n);

    //  Let's say we want to unzip the 3rd entry:
    CkZipEntry entry;
    entry = zip.GetEntryByIndex(2);
    if (entry == null ) {
        System.out.println("Index out of range!");
        return;
    }
    else {
        //  Unzip it to C:/myTempDir
        success = entry.ExtractInto("c:/myTempDir");
        if (success != true) {
            System.out.println(entry.lastErrorText());
            return;
        }
        else {
            System.out.println("Extracted 1 file!");
        }

    }

  }
}