Page 130 - CTS - CSA TP - Volume 2

COMPUTER SOFTWARE APPLICATION - CITS

// Parameterized constructor
Student(String name, int age) {

this.name = name;
this.age = age;
}
// Method to display student details

void displayDetails() {
System.out.println(“Name: “ + name);
System.out.println(“Age: “ + age);
}
}

public class StudentDemo {
public static void main(String[] args) {
// Creating an instance of Student using the parameterized constructor
Student student = new Student(“John”, 20);

// Displaying student details
student.displayDetails();
}
}

Explanation:

• In this program, we define a class Student with attributes name and age.
• We provide a parameterized constructor for the Student class, which initializes the name and age attributes
with the values passed as parameters.

• In the main method, we create an instance of the Student class using the parameterized constructor, passing
specific values for the name and age.
• We call the displayDetails method of the Student class to display the student details.

Parameterized constructors allow you to initialize object attributes with specific values at the time of object
creation. They provide flexibility and convenience in setting initial state for objects, making them ready for use.

3 Constructor chaining in Java
Constructor chaining in Java refers to the process of calling one constructor from another constructor within
the same class or from the constructor of the superclass. Here are examples of constructor chaining with
explanations:
TASK 1: Constructor Chaining within the Same Class

class Student {
String name;
int age;
// Parameterized constructor

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CITS : IT & ITES - Computer Software Application - Exercise 97