What is POJO in Java?

POJO(Plain Old Java Object:

• A Java Programming POJO (Plain Old Java Object) is a simple normal Java class that is not connected to any special framework or restriction.Is not dependent on frameworks like EJB.

• It does not need special classes, interfaces, or dependencies.

• A POJO usually contains fields, constructors, getters, setters, and normal methods.

Why is POJO?

• POJO is used to create simple Java classes.
• It makes code easy to write and understand.
• It helps to store object data like name, age, id, etc.
• It improves code reusability.
• It is easy to test and maintain.

Example:

class Student {
    private String name;
    private int age;

    // Constructor
    Student(String name, int age) {
        this.name = name;
        this.age = age;
    }

    // Getter
    public String getName() {
        return name;
    }

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

    public static void main(String[] args) {

        Student s1 = new Student("Divya", 20);

        System.out.println(s1.getName());
    }
}

Output