(Java) Add Multiple Files to a ZIP Using AppendFiles

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This example demonstrates how to use the AppendFiles method to add multiple files matching wildcard patterns to a ZIP archive.

The example adds:

• All .txt files from one directory.
• All .xml files recursively from another directory tree.

The AppendFiles method adds references to matching files in the local filesystem. The files are not actually read or compressed until a Write* method is called.

When recursive mode is enabled (recurse = true), relative subdirectory paths are preserved within the ZIP archive.

For example, suppose the local filesystem contains the following directory tree:

c:/data/invoices/2024/january/inv001.xml
c:/data/invoices/2024/january/inv002.xml
c:/data/invoices/2024/february/inv003.xml

And the following call is made:

zip.AppendFiles("c:/data/*.xml",true);

Then the following paths will be stored in the ZIP archive:

invoices/2024/january/inv001.xml
invoices/2024/january/inv002.xml
invoices/2024/february/inv003.xml

The portion of the path preceding the wildcard root (c:/data/) is not stored in the ZIP archive.

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;

    CkZip zip = new CkZip();

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

    // Add all .txt files from c:/reports.
    // Subdirectories are not included because recurse=ckfalse.
    success = zip.AppendFiles("c:/reports/*.txt",false);
    if (success == false) {
        System.out.println(zip.lastErrorText());
        return;
        }

    // Add all .xml files recursively from c:/data.
    // Relative subdirectory paths are preserved within the ZIP archive.
    success = zip.AppendFiles("c:/data/*.xml",true);
    if (success == false) {
        System.out.println(zip.lastErrorText());
        return;
        }

    // Write the ZIP archive to disk and close it.
    // The source files are consumed at this time.
    success = zip.WriteZipAndClose();
    if (success == false) {
        System.out.println(zip.lastErrorText());
        return;
        }

    System.out.println("ZIP archive created successfully.");
  }
}