CSCI 161 - Lab 2: "Give Me a Second!"

Overview

This lab will have you developing a program that asks the user to input a time period as a number of seconds and in turn calculates the whole number of days, hours and minutes that are contained within the entered time period.

Refer to the "Output Format" below for an example of what your program must do.

The objectives of this lab are to reinforce and help teach:

proper Java program class construction, purpose of the main method and use of other methods that each perform a smaller part of the overall problem

use of different data types, in particular long

methods with parameters

methods that return values

handling of user input (use of the Scanner class)

conditional statements

indefinite loops

Instructions

Following are the instructions and you should follow them carefully:

Using Eclipse create a new Java Project and name it: Lab2

As with all your labs, add a class of the same name, Lab2, and include in that class a main method.

The main method and therefore your program should use an indefinite loop and within that loop:

Prompt the user to enter a whole number of seconds or 0 to exit the program.

Get input from the user as a single long integer.

Check if 0 was entered and if so then...

...Print a departing message and terminate the loop and the program

else if 0 not entered then....

...Print out the number of seconds entered and, ...

...Calculate and print out the total whole number of days contained within said seconds and, ...

...Calculate and print out the total whole number of hours contained within said seconds and, ...

...Calculate and print out the total whole number of minutes contained within said seconds and, ...

...Lastly, calculate and print out the days, hours, minutes and seconds within said seconds in the D:HH:MM:SS format.

Your program should output according to the "Output Format" below.

The program must break down the task at hand into small operations, each one performed by a different method.

Iteratively develop the lab (get one method working, test it, fix syntax errors, continue on to the next).

When the lab is complete and working submit it as Lab2

Things to Consider & Remember

Utilize a commenting style like the one shown in class (here).

Method names and variable names should have the proper camelCase.

Use proper indentation for your curly braces, conditional statements, loops.

You should be able to find some code to re-use (with some modifications required) in the last lecture code sample (here.)

Your program should store the seconds entered by the user in a variable of the long data type.

Your program should have many methods, ideally one method for each of the different feature steps about (approximately 8 in total for i. through x. above).

Test with many different seconds values (a few digits, many digits, 0, ...).

Output Format

Following is an example of the desired output format:

Enter a number of seconds as a whole number or 0 to quit: 3600 Number of seconds entered is 3600 and that equates to: 0 days 1 hours 60 minutes 0:01:00:00 days, hours, minutes and seconds (D:HH:MM:SS:) Enter a number of seconds as a whole number or 0 to quit: 123456 Number of seconds entered is 123456 and that equates to: 1 days 34 hours 2057 minutes 1:10:17:36 days, hours, minutes and seconds (D:HH:MM:SS:) Enter a number of seconds as a whole number or enter 0 to exit: 723672 Number of seconds entered is 723672 and that equates to: 8 days 201 hours 12061 minutes 8:09:01:12 days, hours, minutes and seconds (D:HH:MM:SS:) Enter a number of seconds as a whole number or 0 to quit: 0 0 entered. Goodbye!