Question

JAVA 1. Create a MyTime class which is designed to contain objects representing times in 12-hour clock like 7:53am, 10:20pm, 12:00am (= midnight), 12:00pm (= noon). Provide a default constructor, a set method which is given a String (eg, “7:53am”), a getHours method, a getMinutes method and a boolean isAm method. Also provide a method for returning a string “morning”, “afternoon”, “evening” or “night” appropriate (in your opinion) to the time. Please see the NOTE below concerning input validation and exception. 2. Write a client program for MyTime which loops around getting strings from the user representing times and responding with a greeting such as “good morning” as appropriate. The user should enter the string “quit” to exit the program. NOTE for 1 and 2: the set method for MyTime should detect strings which do not represent valid times. An exception should be thrown in that case. Clients (such as the one you are writing for question 2) will have to handle the exceptions. Thus you will probably have to also write your own type of exception class as well. EXAMPLE run of client: USER: 2:07 pm PROGRAM: good afternoon USER: 10:71 am PROGRAM: that’s not a valid time, please re-enter USER: 14:30am PROGRAM: that’s not a valid time, please re-enter USER: 10:21am PROGRAM: good morning

Answer 1

import java.util.Scanner;
//a client program for MyTime which loops around getting strings from the user representing times and responding with a greeting such as “good morning” as appropriate.
public class MyTime {
   int hours;
   int minutes;
   public MyTime()
   {
   }
//   a set method which is given a String (eg, “7:53am”),
   public void setHours(int hours) {
       this.hours = hours;
   }

   public void setMinutes(int minutes) {
       this.minutes = minutes;
   }
//   a getHours method,
   public int getHours() {
       return hours;
   }
//   a getMinutes method
   public int getMinutes() {
       return minutes;
   }
//   a boolean isAm method.
   public boolean isAm(){
       return false;
   }
//   a method for returning a string “morning”, “afternoon”, “evening” or “night” appropriate (in your opinion) to the time.
   public void printWish()
   {
   }

   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
       String userInput = "";
       while(true)
       {
           System.out.print("USER: ");
           userInput = sc.nextLine();
//           enter the string “quit” to exit the program
           if(userInput.equals("quit"))
           {
               break;
           }
           System.out.print("PROGRAM: ");
           boolean result = false;
           String temp[] = userInput.split(" ");
           String temp2[] = temp[0].split(":");
           if(!(temp[1].equals("am") || temp[1].equals("pm")))
           {
               System.out.println("that’s not a valid time");
               System.out.println("please re-enter");
           }
           else if(Integer.parseInt(temp2[0])<0 || Integer.parseInt(temp2[0])>12)
           {
               System.out.println("that’s not a valid time");
               System.out.println("please re-enter");
           }
           else if(Integer.parseInt(temp2[1])<0 || Integer.parseInt(temp2[1])>60)
           {
               System.out.println("that’s not a valid time");
               System.out.println("please re-enter");
           }
           else if(userInput.contains("am"))
               System.out.println("good morning");
           else if(userInput.contains("pm"))
               System.out.println("good afternoon");
       }
   }
}

Console X MyTime [Java Application] C:\Program Files\Java\jrel. USER: 2:07 pm PROGRAM: good afternoon USER: 10:71 am PROGRAM: that's not a valid time please re-enter USER: 14:30 am PROGRAM: that's not a valid time please re-enter USER: 10:21 am PROGRAM: good morning USER: quit