Java

Create a Zip Entirely in Memory

See more Zip Examples

Demonstrates how to create a .zip from in-memory byte data and strings, and to write the .zip to an in-memory image. Java

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.

    CkCrypt2 crypt = new CkCrypt2();
    CkZip zip = new CkZip();

    success = zip.NewZip("test.zip");
    if (success == false) {
        System.out.println(zip.lastErrorText());
        return;
        }

    //  Add the bytes 0x00 0x01 0x02 0x03 ... 0x0F as a file in the .zip
    CkBinData bd = new CkBinData();
    bd.AppendEncoded("000102030405060708090A0B0C0D0E0F","hex");
    zip.AddBd("binaryData.dat",bd);

    //  Add the string "Hello World!" to the .zip
    zip.AddString("helloWorld.txt","Hello World!","utf-8");

    CkByteData zipFileInMemory = new CkByteData();
    success = zip.WriteToMemory(zipFileInMemory);

    //  We could save these files to a file, and it is a valid .zip
    CkFileAccess fac = new CkFileAccess();
    success = fac.WriteEntireFile("test.zip",zipFileInMemory);
    if (success == false) {
        System.out.println(fac.lastErrorText());
        return;
        }

    System.out.println("Zip Created!");
  }
}