(Java) Zip Files in a Date Range

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Demonstrates how to use the Zip.MinDate and Zip.MaxDate properties to zip only those files with a last-modified date within a date range.

Note: This example requires Chilkat v10.0.0 or greater.

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

    boolean success;

    CkZip zip = new CkZip();

    String zipPath = "c:/temp/qa_output/out.zip";

    // Initialize the zip object with the path of the .zip to be created.
    zip.NewZip(zipPath);

    // The MinDate and MaxDate properties use the timestamp date/time string format.
    // Here are some examples:
    // YYYY-MM-DD (e.g., 2024-07-31)
    // YYYY-MM-DDTHH:MM:SS�HH:MM (e.g., 2024-07-31T12:34:56+02:00)
    // 2024-07-31T12:34:56Z (the "Z" denotes Zulu time, or UTC)

    // Only append files having a last-modified date greater than 1-Jan-2017
    zip.put_MinDate("2017-01-01T00:00:00Z");

    // Also, only append files having a last-modified date less than the end of 2020
    zip.put_MaxDate("2020-12-31T23:59:59Z");

    // You don't need to specify both MinDate and MaxDate.
    // You can specify only one or the other if needed.

    // The MinDate/MaxDate properties apply to all of the Chilkat methods for appending files.

    // Recursively append to the zip object the paths of the files and directories in a directory tree.
    // At this point we are not creating the .zip, nor are we reading the contents of the files.
    // We are simply appending references to the files and directories in the local filesystem
    // that will get processed when WriteZip is called.
    boolean recurse = true;
    success = zip.AppendFiles("c:/temp/files_to_zip",recurse);
    if (success == false) {
        System.out.println(zip.lastErrorText());
        return;
        }

    zip.put_FileName(zipPath);
    success = zip.WriteZip();
    if (success == false) {
        System.out.println(zip.lastErrorText());
        return;
        }

    zip.CloseZip();

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