1.3-Object-Georienteerd-Programmeren
Validation
In this assignment you are going to practice throwing and catching (Runtime) Exceptions.
We are going to implement a Person class where several checks need to be performed as soon as a setter is called.
If the values that are passed in do not meet the requirements, an IllegalArgumentException will have to be thrown.
In the Application class we will test the code and catch any errors thrown! One example of how to handle errors has already been given.
Validation
The following methods are available in the person class. For each method, it is indicated how to validate the parameters:
| Method | Explanation | |
|---|---|---|
setAge |
The person’s age can never be below 0, nor can it be greater than 150. | |
setZipCode |
We are going to validate Dutch postal codes: first 4 digits, then 2 letters (for example 1234AB). We assume that there is no space between numbers and letters. | . |
setPhoneNumber |
We are validating Dutch phone numbers: there are 10 digits in total of which the first digit must be a zero. There are no constraints for the other 9 digits. |
Hints
You can use the methods: Character.isLetter() and Character.isDigit() from the java library to check whether a char is a digit or a letter.
Tests
Study the given tests for age testing. Can you add more tests to make sure the other values are validated correctly?