Writing Methods that Return a Value in Java In this lab, you complete a partially written Java program that includes a method that returns a value. The program is a simple calculator that prompts the user for two numbers and an operator ( +, −, *, /,or% ). The two numbers and the operator are passed to the method where the appropriate arithmetic operation is performed. The result is then returned to the main() method where the arithmetic operation and result are displayed. For example, if the user enters 3, 4, and *, the following is displayed: 3.00 * 4.00 = 12.00 The source code file provided for this lab includes the necessary variable declarations, and input and output statements. Comments are included in the file to help you write the remainder of the program. Instructions Write the Java statements as indicated by the comments. Execute the program Tasks Defined performOperation() Input / output tests Multiplication input / output test Division input / output test Subtraction input / output test Addition input / output test performOperation unit tests performOperation addition test performOperation multiplication test
Writing Methods that Return a Value in Java
In this lab, you complete a partially written Java program that includes a method that returns a value. The program is a simple calculator that prompts the user for two numbers and an operator ( +, −, *, /,or% ). The two numbers and the operator are passed to the method where the appropriate arithmetic operation is performed. The result is then returned to the main() method where the arithmetic operation and result are displayed. For example, if the user enters 3, 4, and *, the following is displayed:
3.00 * 4.00 = 12.00
The source code file provided for this lab includes the necessary variable declarations, and input and output statements. Comments are included in the file to help you write the remainder of the program.
Instructions
- Write the Java statements as indicated by the comments.
- Execute the program
Tasks
- Defined performOperation()
- Input / output tests
- Multiplication input / output test
- Division input / output test
- Subtraction input / output test
- Addition input / output test
- performOperation unit tests
- performOperation addition test
- performOperation multiplication test
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