11_Basic problems on classes and object

class  Employee1{
    int salary;
    String name;
    public int getSalary(){
        return salary;
    }
    public String getName(){
        return name;
    }
    public void setName(String n){
        name = n;
    }
}

class CellPhone{
    public void ringing(){
        System.out.println("Ringing...");
    }
    public void vibrating() {
        System.out.println("Vibrating...");
    }
    public void callFriend() {
        System.out.println("Calling...");
    }
}

class Square{
    int side;
    public int area(){
        return  side * side;
    }
    public int perimeter(){
        return 4 * side;
    }
}

class Rectangle{
    int breadth;
    int height;
    public int area(){
        return breadth * height;
    }
    public int perimeter(){
        return 2*(breadth + height);
    }
}
public class practiceset4 {
    public static void main(String[] args) {


        // Problem 1

        Employee1 gg = new Employee1();
        gg.setName("GG");
        gg.salary = 77;
        System.out.println("My salary is : "+gg.getSalary());
        System.out.println("and my name is : "+gg.getName());

        // Problem 2

        CellPhone apple = new CellPhone();
        apple.ringing();
        apple.vibrating();
        apple.callFriend();



        // Problem 3

        Square sq = new Square();
        sq.side=5;
        System.out.println("Area of square is : "+sq.area());
        System.out.println("Perimeter of the square is : "+sq.perimeter());


        // Problem 4

        Rectangle rc =  new Rectangle();
                rc.breadth= 5;
                rc.height=6;
        System.out.println("Area of the rectangle is : "+rc.area());
        System.out.println("Perimeter of the rectangle is : "+rc.perimeter());
    }
}