POJO Class In Java

#java #basic #beginners

A POJO (Plain Old Java Object) is a simple Java class that is not tied to any special frameworks or restrictions. It is mainly used to represent data.

Key Features of a POJO:

Private variables (fields)
Public getter and setter methods
No dependency on external frameworks
May include constructors

Example:

class Student {

    // Private variables
    private int id;
    private String name;

    // Setter methods
    public void setId(int id) {
        this.id = id;
    }

    public void setName(String name) {
        this.name = name;
    }

    // Getter methods
    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }
}

public class Main {

    public static void main(String[] args) {

        // Object creation
        Student s = new Student();

        // Setting values
        s.setId(101);
        s.setName("Sam");

        // Getting values
        System.out.println("Id : " + s.getId());
        System.out.println("Name : " + s.getName());
    }
}