JAVA PROGRAMMING!!!

This program will allow us to practice exceptions happening in a variety of places.

Do you remember being in elementary school and doing basic arithmetic with buttons or m&ms or ...? We are going to

write a Kid Calculator that will take 2 numbers are draw out visually the +, -, *, and /.

KidCalc class:

2 Instance variable for the 2 integers

Constructor with two parameters to set instance variables. Throw RuntimeException if either number is

negative

showAdd method that takes no parameters and prints a visual representation of addition. If the numbers

passed to the constructor were 6 and 2, then this would print:

o

6 + 2 = 8 --> xxxxxx xx

showSub method that takes no parameters and prints a visual representation of subtraction. This method will

throw ArithmeticException if the second number is larger than the first number. If the numbers passed to the

constructor were 6 and 2, then this would print:

o

6 - 2 = 4 --> xxxx//

showMult method that takes no parameters and prints a visual representation of multiplication. If the numbers

passed to the constructor were 6 and 2, then this would print:

o

6 * 2 = 12 --> (xx)(xx)(xx)(xx)(xx)(xx)

showDivide method that takes no parameters and prints a visual representation of division. This method will

throw ArithmeticException if you cannot evenly divide num2 into num1 (i.e. if there is a remainder). If the

numbers passed to the constructor were 6 and 2, then this would print:

o

6 / 2 = 3 --> (xx)(xx)(xx)

KidCalcTest class contains main()

Here are notes for main():

Use a loop and a try-catch block to continue reading from the user until 2 integers have been read. You should

be catching InputMismatchException to handle when the user types letters instead of digits.

DO NOT USE

nextLine in the try block (however I encourage it in the catch block).

DO USE

nextInt() in the try block.

Have another try-catch block

o

Create a new KidCalc object

o

Call showAdd, showSub, showMult, and showDivide on your new KidCalc object

catch blocks for

o

RuntimeException and ArithmeticException

Both should print a message to standard error and then the stack trace

Unable to create object for RuntimeException

Unable to do the math for ArithmeticException

o

Include finally

it prints ALL DONE!

Requirements:

Put System.out.println() after each line of input. This will help you match the Test Program and make it easier to

use it.

NOTE if you are using the test program, it is unlikely that you will get identical, but you should only differ by a

couple of lines. Filenames and line numbers are printed in the stack trace and those lines will likely be different

Sample Run #1

: (the highlighted text is what the user types)

Num1 num2 6 2

6 + 2 = 8 --> xxxxxx xx

6 - 2 = 4 --> xxxx//

6 * 2 = 12 --> (xx)(xx)(xx)(xx)(xx)(xx)

6 / 2 = 3 --> (xx)(xx)(xx)

ALL DONE!

Sample Run #2

: (the highlighted text is what the user types)

Num1 num2 -3 2

Unable to create object

java.lang.RuntimeException: Nums must be positive

at hmwk11.KidCalc.(KidCalc.java:11)

at hmwk11.KidCalcTest.main(KidCalcTest.java:34)

ALL DONE!

Sample Run #3

: (the highlighted text is what the user types)

Num1 num2 2 6

2 + 6 = 8 --> xx xxxxxx

Unable to do the math

java.lang.ArithmeticException: Num2 is too large

at hmwk11.KidCalc.showSub(KidCalc.java:30)

at hmwk11.KidCalcTest.main(KidCalcTest.java:36)

ALL DONE!

Sample Run #4

: (the highlighted text is what the user types)

Num1 num2 5 3

5 + 3 = 8 --> xxxxx xxx

5 - 3 = 2 --> xx///

5 * 3 = 15 --> (xxx)(xxx)(xxx)(xxx)(xxx)

Unable to do the math

java.lang.ArithmeticException: Not evenly divisible

at hmwk11.KidCalc.showDivide(KidCalc.java:55)

at hmwk11.KidCalcTest.main(KidCalcTest.java:38)

ALL DONE!

Sample Run #5

: (the highlighted text is what the user types)

Num1 num2 3 xx

Integers entered were invalid

Num1 num2 6 2

6 + 2 = 8 --> xxxxxx xx

6 - 2 = 4 --> xxxx//

6 * 2 = 12 --> (xx)(xx)(xx)(xx)(xx)(xx)

6 / 2 = 3 --> (xx)(xx)(xx)

ALL DONE!