Page 358 - Computer_Science_F5

Program Example 5.18:

Java program to create a constructor

// This create a Application class Chapter Five: Object oriented programming with Java
public class Application {
FOR ONLINE READING ONLY
int x; // This declares a class attribute
// Create a class constructor for the Application class, with method declared the same //
name as a class
public Application() {
x = 118; // Set the initial value for the class attribute x
}
public static void main(String[] args) {
Application myApp = new Application(); // Create an object of class Application (This
//will call the constructor)
System.out.println(myObj.x); // Print the value of x
}
}

Observe Program Example 5.19 that is declared with string and is set to print
information of an object with string value of an attribute.

Program Example 5.19:

Java program to create a constructor

public class Car {
private String brand;
private String model;
// Constructor with parameters
public Car(String brandName, String CarModel) {
this. brandName = brandName;
this. CarModel = CarModel;
}
public void carDetails() {
System.out.println(“Brand Name: “ + brandName);
System.out.println(“Car Model: “ + CarModel);
}
public static void main(String[] args) {
// Creating an object using the constructor
Car schoolCar = new Car(“Nissan”, “X-Trail”);
// Calling a method to display car information
schoolCar.carDetails();
}
}

349
Student’s Book Form Five

Computer Science Form 5.indd 349 23/07/2024 12:34