Question

Need help with this java code supposed to be a military time clock, but I need help creating the driver to test and run the clock. I also need help making the clock dynamic.

1. public class Clock
2. {
3. private int hr; //store hours
4. private int min; //store minutes
5. private int sec; //store seconds
6. public Clock ()
7. {
8. setTime (0, 0, 0);
9. }
10. public Clock (int hours, intminutes, int seconds)
11. {
12. setTime (hours, minutes, seconds);
13. }
14. public void setTime (int hours,int minutes, int seconds)
15. {
16. if (0 <= hours && hours < 24)
17. hr = hours;
18. else
19. hr = 0;
20. if (0 <= minutes && minutes < 60)
21. min = minutes;
22. else
23. min = 0;
24. if (0 <= seconds && seconds < 60)
25. sec = seconds;
26. else
27. sec = 0;
28. }
29. //Method to return the hours
30. public int getHours ( )
31. {
32. return hr;
33. }
34. //Method to return the minutes
35. public int getMinutes ( )
36. {
37. return min;
38. }
39. //Method to return the seconds
40. public int getSeconds ( )
41. {
42. return sec;
43. }
44. public void printTime ( )
45. {
46. if (hr < 10)
47. System.out.print ("0");
48. System.out.print (hr + ":");
49. if (min < 10)
50. System.out.print ("0");
51. System.out.print (min + ":");
52. if (sec < 10)
53. System.out.print ("0");
54. System.out.print (sec);
55. }
56. //The time is incremented by one second
57. //If the before-increment time is 23:59:59, the time
58. //is reset to 00:00:00
59. public void incrementSeconds ( )
60. {
61. sec++;
62. if (sec > 59)
63. {
64. sec = 0;
65. incrementMinutes ( ); //increment minutes
66. }
67. }
68. ///The time is incremented by one minute
69. //If the before-increment time is 23:59:53, the time
70. //is reset to 00:00:53
71. public void incrementMinutes ( )
72. {
73. min++;
74. if (min > 59)
75. {
76. min = 0;
77. incrementHours ( ); //increment hours
78. }
79. }
80. public void incrementHours ( )
81. {
82. hr++;
83. if (hr > 23)
84. hr = 0;
85. }
86. public boolean equals (ClockotherClock)
87. {
88. return (hr == otherClock.hr
89. && min == otherClock.min
90. && sec == otherClock.sec);
91. }
92. }

Answer 1

If you have any doubts, please give me comment...

public class Clock {

    private int hr; // store hours

    private int min; // store minutes

    private int sec; // store seconds

    public Clock() {

        setTime(0, 0, 0);

    }

    public Clock(int hours, int minutes, int seconds) {

        setTime(hours, minutes, seconds);

    }

    public void setTime(int hours, int minutes, int seconds) {

        if (0 <= hours && hours < 24)

            hr = hours;

        else

            hr = 0;

        if (0 <= minutes && minutes < 60)

            min = minutes;

        else

            min = 0;

        if (0 <= seconds && seconds < 60)

            sec = seconds;

        else

            sec = 0;

    }

    // Method to return the hours

    public int getHours() {

        return hr;

    }

    // Method to return the minutes

    public int getMinutes() {

        return min;

    }

    // Method to return the seconds

    public int getSeconds() {

        return sec;

    }

    public void printTime() {

        if (hr < 10)

            System.out.print("0");

        System.out.print(hr + ":");

        if (min < 10)

            System.out.print("0");

        System.out.print(min + ":");

        if (sec < 10)

            System.out.print("0");

        System.out.print(sec);

    }

    // The time is incremented by one second

    // If the before-increment time is 23:59:59, the time

    // is reset to 00:00:00

    public void incrementSeconds() {

        sec++;

        if (sec > 59) {

            sec = 0;

            incrementMinutes(); // increment minutes

        }

    }

    /// The time is incremented by one minute

    // If the before-increment time is 23:59:53, the time

    // is reset to 00:00:53

    public void incrementMinutes() {

        min++;

        if (min > 59) {

            min = 0;

            incrementHours(); // increment hours

        }

    }

    public void incrementHours() {

        hr++;

        if (hr > 23)

            hr = 0;

    }

    public boolean equals(Clock otherClock) {

        return (hr == otherClock.hr && min == otherClock.min && sec == otherClock.sec);

    }

}

public class ClockDriver{

    public static void main(String[] args) {

        Clock clock = new Clock();

        clock.setTime(3, 15, 20);

        clock.printTime();

        System.out.println();

        clock.incrementHours();

        clock.incrementSeconds();

        clock.printTime();

        System.out.println();

        clock.incrementMinutes();

        clock.printTime();

        System.out.println();

        Clock otherClock = new Clock(4, 16, 21);

        System.out.println(clock.equals(otherClock));

        otherClock.incrementMinutes();

        System.out.println(clock.equals(otherClock));

    }

}

nagarajuanagaraju-Vostro-3550:26092019$ javac ClockDriver.java nagaraju@nagaraju-Vostro-3550 : 26092019$ java ClockDriver 03:15:20 04:15:21 04:16:21 true false