(Java) Compute Difference Between Two DateTime Strings

Demonstrates how to compute the difference between two datetime strings.

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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[])
  {
    // Imagine we have these strings:

    String t1 = "2022-11-14 15:45:38";
    String t2 = "2022-11-16 17:23:41";

    // How many minutes are between the two?

    // First, we'd want load each date/time into a Chilkat CkDateTime object.
    // In this case, there are no CkDateTime methods that accept the above format.
    // However.. the CkDateTime's SetFromTimestamp will accept a date in the format "YYYY-MM-DDThh:mm:ssZ"

    // First modify the above dates to the timestamp format.
    CkStringBuilder sb1 = new CkStringBuilder();
    sb1.Append(t1);
    int count = sb1.Replace(" ","T");
    sb1.Append("Z");

    CkStringBuilder sb2 = new CkStringBuilder();
    sb2.Append(t2);
    count = sb2.Replace(" ","T");
    sb2.Append("Z");

    // Load each into a CkDateTime
    CkDateTime dt1 = new CkDateTime();
    dt1.SetFromTimestamp(sb1.getAsString());
    // verify...
    System.out.println(dt1.getAsTimestamp(false));

    CkDateTime dt2 = new CkDateTime();
    dt2.SetFromTimestamp(sb2.getAsString());
    // verify...
    System.out.println(dt2.getAsTimestamp(false));

    // Get the difference in seconds
    int diffSeconds = dt2.DiffSeconds(dt1);
    System.out.println("Difference in seconds: " + diffSeconds);
    System.out.println("Difference in minutes: " + (diffSeconds / 60));
  }
}