DAY : 19 How to use Encapsulation in java

Encapsulation Encapsulation is a Data protection In Java, encapsulation is a core object-oriented programming (OOP) principle that bundles data (variables) and the methods (functions) that operate on that data into a single unit, a class, and restricts direct access to some of an object's components, promoting data hiding and controlled access Access Modifier Encapsulation is achieved through Access modifier 1.Private - within the same class 2.Default - Within the same package 3.Protection - Within the same package, inherited, class 4.Public - Public to the entire project **All methods all called as method Signature* Questions: 1.One can access non private fields and methods of a class (consider class A) from another class (Class B) - True 2.Can we have a Private main method - False 3.All Access Modifier applicable for local variables? - False Class Example: public class Google { private int emp_salary; public static String ho_address = "Mountain View"; public static boolean working = true; private void get_user_details() { int no = 10; System.out.println("All Users Details"); } public void search_Results() { System.out.println("Searching Results"); } } public class User { public static void main(String[] args) { //Method Signature Google googleObj = new Google() ; //System.out.println(googleObj.emp_salary); System.out.println(Google.working); System.out.println(Google.ho_address); //googleObj.get_user_details(); googleObj.search_Results(); User.main(); } public static void main(){ System.out.println("Overloaded Main Method"); } }

public class Google {

    private int emp_salary; 
    public static String ho_address = "Mountain View"; 
    public static boolean working = true; 

    private void get_user_details() {
        int no = 10; 
        System.out.println("All Users Details");
    }

    public void search_Results() {
        System.out.println("Searching Results"); 
    }

}


public class User {
    public static void main(String[] args) { //Method Signature
        Google googleObj = new Google() ;
        //System.out.println(googleObj.emp_salary); 
        System.out.println(Google.working);
        System.out.println(Google.ho_address);

        //googleObj.get_user_details(); 
        googleObj.search_Results(); 
        User.main(); 
    }

    public static void main(){     
        System.out.println("Overloaded Main Method");
    }
}