QUESTION

Java using Eclipse IDE for Java developers    

 Assignment 2

Before attempting this project, be sure you have completed all of the reading assignments, non-graded exercises, discussions, and assignments to date.

Write a Java program which:

(1) Prompts a user to enter student two numbers and symbol for operation such as ‘+’, ‘-‘, ‘*’, and ‘/’ (use Scanner for input).

(2) Code uses nested if statement or switch to perform the operation on the two numbers

(3) If the provided symbol is valid, displays the input data along with the result of the calculation to the console. Otherwise displays error message

For example, for input: 7 8 + the calculation is addition and the result will be 15

Note 1: To read a single character by Scanner, you can read in as string and then use the first character. For example: scan.next().charAt(0)

Note 2: Be careful you do not have integer division

Note 3: If user inputs invalid symbol, print an error message only

Test program:

A minimum of 5 test cases (one for each valid operation and one for invalid operation) should be supplied in the form of table with columns indicating the input values, expected output, actual output and if the test case passed or failed. This table should contain 4 columns with appropriate labels and a row for each test case. An example template is shown below. Note that the actual output should be the actual results you receive when running your program and applying the input for the test record.

Make sure your Java program is using the recommended style such as:

 Javadoc comment up front with your name as author, date, and brief purpose of the program

 Comments for variables and blocks of code to describe major functionality

 Meaningful variable names and prompts

 Identifiers are written in upper CamelCase

 Class name starts with upper case letter and variables in lower case letter

 Constants are written in All Capitals

 Use proper spacing and empty lines to make code human readable

Capture execution:

You should capture and label screen captures associated with compiling your code, and running each of your 4 test cases.

Here are a couple sample runs:

Enter two integer numbers separated by space: 7 6

Enter operation symbol (+, -, *, or /): +

Evaluation: 7 + 6 = 13.0

Enter two integer numbers separated by space: 5 6

Enter operation symbol (+, -, *, or /): (

Not valid operation symbol

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