TimeMain.java

// The class "TimeMain" uses the class "SimpleTime1"

/*
  javac TimeMain.java
  java  TimeMain
*/

public final class TimeMain {

   public static void main (final String [] args) {
      final SimpleTime1 t = new SimpleTime1 ();  // new--class instantiation
      System.out.format ("%02d:%02d%n", t.hour, t.minute);

      final SimpleTime1 s = new SimpleTime1 ();  // a second instance
      s.hour = 7;
      s.minute = 12;
      System.out.format ("%02d:%02d%n", s.hour, s.minute);

      final SimpleTime1 r = new SimpleTime1 ();  // a third instance
      r.hour = 18;
      r.minute = 53;
      System.out.format ("%02d:%02d%n", r.hour, r.minute);
   }
}