(Java) Download a Zip from a URL and OpenBd. (No .zip file is created)

Demonstrates how to download a .zip from a URL, opens the Zip, and gets the contents of a file. No file is ever written.

Chilkat Java Downloads Java Libs for Windows, MacOS, Linux, Alpine Linux Java Libs for Android

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[])
  {
    boolean success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http = new CkHttp();

    CkBinData bd = new CkBinData();

    // This URL is valid and can be tested...
    success = http.QuickGetBd("https://chilkatdownload.com/example_data/hamlet.zip",bd);
    if (http.get_LastMethodSuccess() == false) {
        System.out.println(http.lastErrorText());
        return;
        }

    CkZip zip = new CkZip();

    // Open the zip from the bytes contained in bd.
    success = zip.OpenBd(bd);
    if (success == false) {
        System.out.println(zip.lastErrorText());
        return;
        }

    // Get the entry for the file we want..
    CkZipEntry entry = new CkZipEntry();
    success = zip.EntryOf("hamlet.xml",entry);
    if (success == false) {
        System.out.println(zip.lastErrorText());
        return;
        }

    // Convert all line endings to CRLF (if needed)
    int lineEndingBehavior = 2;
    String xmlStr = entry.unzipToString(lineEndingBehavior,"utf-8");
    if (entry.get_LastMethodSuccess() == false) {
        System.out.println(entry.lastErrorText());
        return;
        }

    // The XML in this case is about 274K, so let's just examine the last 20 lines...
    CkStringBuilder sb = new CkStringBuilder();
    sb.Append(xmlStr);

    System.out.println(sb.lastNLines(20,true));
  }
}