(Java) Date/Time Expires Within N Seconds/Minutes/Hours/Days

Demonstrates the how to tell if a date/time is within N seconds, minutes, hours, or days of the current system time.

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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[])
  {
    CkDateTime dt = new CkDateTime();

    // Set to the current system date/time.
    dt.SetFromCurrentSystemTime();
    System.out.println("Now: " + dt.getAsTimestamp(true));

    // Add 10 minutes, making the date 10 minutes in the future.
    dt.AddSeconds(600);
    System.out.println("10 minutes from now: " + dt.getAsTimestamp(true));

    // Is the date/time within 10 seconds of expiration (i.e. within 10 seconds of now)?
    boolean b = dt.ExpiresWithin(10,"seconds");
    System.out.println("Expires within 10 seconds: " + b);

    // Does the date/time expire within 5 minutes?
    b = dt.ExpiresWithin(5,"minutes");
    System.out.println("Expires within 5 minutes: " + b);

    // Does the date/time expire within 15 minutes?
    b = dt.ExpiresWithin(15,"minutes");
    System.out.println("Expires within 15 minutes: " + b);

    // Does the date/time expire within 1 hour?
    b = dt.ExpiresWithin(1,"hour");
    System.out.println("Expires within 1 hour: " + b);

    // Does the date/time expire within 1 day?
    b = dt.ExpiresWithin(1,"day");
    System.out.println("Expires within 1 day: " + b);

    // Output:

    // 	Now: 2017-05-05T23:48:00-0500
    // 	10 minutes from now: 2017-05-05T23:58:00-0500
    // 	Expires within 10 seconds: False
    // 	Expires within 5 minutes: False
    // 	Expires within 15 minutes: True
    // 	Expires within 1 hour: True
    // 	Expires within 1 day: True
  }
}