Java Encapsulation

Java Encapsulation:

Encapsulation is a mechanism that binds class members (variables and methods) together and protects them from being accessed by the other classes. In Java, you can consider a class as an example of encapsulation, because a class binds data and code together and hides their complexity from other classes. We can create a fully encapsulated class in Java by making all the data members of the class private.

In Student.java class we define the objects and methods. We call these objects and methods in Main.java class as shown below.

Student.java Class:

public class Student {
	
	private String stu_name;
	private int stu_age;
	private double stu_marks;
	private String stu_city;
	
   
	Student (String stu_name, int stu_age, double stu_marks, String stu_city){
		
		this.setStudentName(stu_name);
		this.setStudentAge(stu_age);
		this.setStudentMarks(stu_marks);
		this.setStudentCity(stu_city);
		
	}
	
	public String getStudentName() {
		
		return stu_name;
	}
	
   public int getStudentAge() {
		
		return stu_age;
	}

   public double getStudentMarks() {
	
	return stu_marks;
   }

   public String getStudentCity() {
	
	return stu_city;
   }
   
   public void setStudentName(String stu_name) {
		
		this.stu_name = stu_name;
	   }
   
   public void setStudentAge(int stu_age) {
		
		this.stu_age = stu_age;
	   }
   
   
   public void setStudentMarks(double stu_marks) {
		
		this.stu_marks = stu_marks;
	   }
   
   public void setStudentCity(String stu_city) {
		
		this.stu_city = stu_city;
	   }
   
}

Main.java Class:

public class Main {
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub

	  Student student = new Student("Andrew", 25, 91.50, "New York");
	  // Example of Setter Method
	  student.setStudentName("Robin"); 
	  
	  //Example of getter method
	  System.out.println(student.getStudentName());
	  System.out.println("Age is " + student.getStudentAge() + " years old");
	  System.out.println("Marks = " + student.getStudentMarks());
	  System.out.println(student.getStudentCity());
	  
	 }
	

}