How to loop this program 3x for my Salary Calculator Java

Question

So I’m trying to write a Java program that displays 3 employees gross pay factoring in overtime pay. I was able to make a program with a while loop but am confused as to get this to print for each employee. I want the output to look like “Pay for employee 1 is:…” “Pay for employee 2 is:…” “Pay for employee 3 is:…” the program I made looks nice but can’t make it for 3 employees. I played around with the increment operators and still got lost please help. I wrote it like this:(yes Java until scanner was activated)

System.out.print(“Enter hourly rate”);
Int hourlyRare = input.nextInt();
System.out.print(“Enter hours worked”); 
Int hoursWorked = input.nextInt();

While (hoursWorked <=40)
System.out.printf(“Pay for     employee one is: “ + hoursWorked * hourlyRate);

If (hoursWorked >40)
System.out.printf(“Pay for employee one is:” + hourlyRate * 1.5 * hoursWorked);

Output is:

Enter hourly rate: 33 Enter hours worked: 55 Pay for employee one is: 2722.5

I tried to use the whole loop and an of statement and I got stuck on how to get output for 3 employees. I’m not sure how to do increments correctly or if that is needed? Or did I mess this up entirely?

Answer 1

You just have to wrap the whole thing in a loop. Since you know exactly how often you want the code to be ran you can just use a for-loop like this:

for (int employer = 1; employer <= 3; employer++) {
    // ask for their rate and hours
    System.out.print(“Enter hourly rate”);
    int hourlyRare = input.nextInt();
    System.out.print(“Enter hours worked”); 
    int hoursWorked = input.nextInt();

    // print them using the employer-variable from the for loop
    System.out.printf("Pay for employer %d is: %f", employer, (hourlyRare * hoursWorked));
}

Inside the for loop you (usually) create a variable (called employer here) and initialize it (1 here). Then you specify a condition that has to be fulfilled for the loop to run (employer <= 3) and then an expression that is executed after each run of the loop (employer++) which is usually ment to make sure the loop eventually terminates. So the loop will run with employer = 1, then increase it to 2, run again, increase it to 3 and run again, after that it'll stop. Inside the loop is your code which asks them for rate and hours, and then prints out their number and pay. I've used System.out.printf() which is considered the cleanest way to print out a string containing different variables/results.

You can read about how to format Strings including variables in System.out.printf() here: https://docs.oracle.com/javase/tutorial/java/data/numberformat.html And for more infos about the for loop check out https://docs.oracle.com/javase/tutorial/java/nutsandbolts/for.html