//TimeTest4.java
import javax.swing.*;
public class TimeTest4 {
   public static void main( String args[] ){
      Time4 t1 = new Time4();              // 00:00:00
      Time4 t2 = new Time4( 2 );           // 02:00:00
      Time4 t3 = new Time4( 21, 34 );      // 21:34:00
      Time4 t4 = new Time4( 12, 25, 42 );  // 12:25:42
      Time4 t5 = new Time4( t4 );          // 12:25:42
      String output = "Constructed with: " +
         "\nt1: all arguments defaulted" +
         "\n      " + t1.toUniversalString() +
         "\n      " + t1.toStandardString();
      output += "\nt2: hour specified; minute and second defaulted" +
         "\n      " + t2.toUniversalString() +
         "\n      " + t2.toStandardString();
      output += "\nt3: hour and minute specified; second defaulted" +
         "\n      " + t3.toUniversalString() +
         "\n      " + t3.toStandardString();
      output += "\nt4: hour, minute and second specified" +
         "\n      " + t4.toUniversalString() +
         "\n      " + t4.toStandardString();
      output += "\nt5: Time4 object t4 specified" +
         "\n      " + t5.toUniversalString() +
         "\n      " + t5.toStandardString();
      JOptionPane.showMessageDialog( null, output,
         "構造函數的重載", JOptionPane.INFORMATION_MESSAGE );
      System.exit( 0 );
   } 
}