Exercises

Now that you understand an object's life cycle, it is time to spend some time in JShell creating new classes and instances.

Exercise 1

1. Create a new Student class with a constructor that requires two String arguments: firstName and lastName. Use the arguments to initialize fields with the same names as the arguments. Display a message with the values for firstName and lastName when an instance of the class is created.
2. Create an instance of the Student class and assign it to a variable. Check the messages printed in JShell.
3. Create an instance of the Student class and assign it to a variable. Check the messages printed in JShell.

Exercise 2

1. Create a function that receives two String arguments: firstName and lastName. Create an instance of the previously defined Student class with the received arguments as parameters for the creation of the instance. Use the instance properties to print a message with the first name followed by a space and the last name. You will be able to create a method and add it to the Student class later to perform the same task. However, we will learn more about this in the forthcoming chapters.
2. Call the previously created function with the necessary arguments. Check the message printed in JShell.