Question

In the following class

public class Single
{
private float unique;
...
}

Create constructor, setter and getter methods, and toString method.

Write a program that request a time interval in seconds and display it in hours, minutes, second format.

NEED THESE ASAP

Answer 1

Implement the program as follows:

1. import Scanner class
2. define class Single
3. define private member unique
4. define a constructor that accepts float value, unique
5. set float value unique
6. define setter method setUnique() that accepts float value unique
7. set float value unique
8. define getter method getUnique()
9. return unique value
10. define the method toString()
11. return string representation of Single class
12. define the method main()
13. Instantiate Single class
14. print Single class object
15. update unique using setUnique()
16. print Single class object
17. define variables to store hours, minutes and seconds
18. initialize Scanner
19. ask the user to enter time interval in seconds
20. read time interval
21. calculate seconds as time_seconds%60
22. calculate total_minutes as time_seconds/60
23. calculate minutes as total_minutes%60
24. calculate hours as total_minutes/60
25. print time interval as hours, minutes and seconds

Program: Single.java

Language: Java

import java.util.Scanner;                                                       /* import Scanner class */
public class Single{                                                            /* define class Single */
        private float unique;                                                   /* define private member unique */
        
        public Single(float unique){                                    /* define a constructor that accepts float value, unique */
                this.unique = unique;                                           /* set float value unique */
        }
        
        public void setUnique(float unique){                    /* define setter method setUnique() that accepts float value unique */
                this.unique = unique;                                           /* set float value unique */
        }
        
        public float getUnique(){                                               /* define getter method getUnique() */
                return this.unique;                                             /* return unique value */
        }
        
        public String toString(){                                               /* define the method toString() */
                return "Single[unique=" + getUnique() + "]";    /* return string representation of Single class */
        }
        
        public static void main(String[] args){                         /* define the method main() */
                Single single = new Single(4.56f);                              /* Instantiate Single class */
                System.out.println(single);                                     /* print Single class object */
                System.out.println("Updating unique.."); 
                single.setUnique(6.78f);                                                /* update unique using setUnique() */
                System.out.println(single);                                     /* print Single class object */
                
                
                int time_seconds, hours, minutes, total_minutes, seconds;       /* define variables to store hours, minutes and seconds */
                Scanner scnr = new Scanner(System.in);                                          /* initialize Scanner */
                System.out.print("Enter time interval in seconds : ");          /* ask the user to enter time interval in seconds */
                time_seconds = scnr.nextInt();                                                          /* read time interval */
                seconds = time_seconds%60;                                                                      /* calculate seconds as time_seconds%60 */
                total_minutes = time_seconds/60;                                                        /* calculate total_minutes as time_seconds/60 */
                minutes = total_minutes%60;                                                             /* calculate minutes as total_minutes%60 */
                hours = total_minutes/60;                                                                       /* calculate hours as total_minutes/60 */
                
                System.out.println(hours + ":" + minutes + ":" + seconds);      /* print time interval as hours, minutes and seconds */
        }
}

Screenshot:

Output:

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