Workbook 7.1

Inside the Java Bootcamp Resources, launch Workbook 7.1.

Task 1

Create a new file named Person.java. Inside the file, create the Person class.

public class Person {


}

The Person class will define the following fields:

    String name;
    String nationality;
    String dateOfBirth;
    String[] passport;
    int seatNumber;

The Person class is a blueprint from which you can create Person objects.

Task 2

Create one object of the Person class. Then print every field in the object.

>>: null
>>: null
>>: null
>>: null
>>: 0

Task 3

Update each field in the object before printing them.

        person.name = // a String
        person.nationality // a String
        person.dateOfBirth = // a String
        person.passport = // Array that stores: {person.name, person.nationality, person.dateOfBirth}
        person.seatNumber = // an Integer

Hint for passport

You can only use shorthand initialization in the same line as the variable declaration.

That's because the compiler is able to infer the array type.

You cannot use shorthand initialization on another line because the compiler can't infer the type.

You need to explicitly define a new array that can store String elements.

Task 4

Print the fields of your updated object.

        System.out.println(person.name);
        System.out.println(person.nationality);
        System.out.println(person.dateOfBirth);
        System.out.println(Arrays.toString(person.passport));
        System.out.println(person.seatNumber);

Result

>>: Rayan Slim
>>: Canadian
>>: 01/01/1111
>>: [Rayan Slim, Canadian, 01/01/1111]
>>: 5

Visualizing the Runtime

After you solve this workbook, I still recommend watching the video solution on Udemy.

It will show you how to visualize the runtime using Visual Studio Code.

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Associated Course: The Complete Java Development Bootcamp

Related Course: The Complete Spring Boot Development Bootcamp – Become a Java Web Developer