1.
What is output of the program?
class Test{
        public void display(int x, double y){
                System.out.println(x+y);
        } 
        public double display(int p, double q){
                return (p+q);
        }
        public static void main(String args[]){
                Test test = new Test();
                test.display(4, 5.0);
                System.out.println(test.display(4, 5.0));
        }
}

2.
what is the result of the following piece of code:
public class Person{
        public void talk(){
                System.out.print("I am a Person");
        }
}

public class Student extends Person{
        public void talk(){
                System.out.print("I am a Student");
        }
}

public class Test{
        public static void main(String args[]){
                Person p = new Student();
                p.talk();
        }
}

3.
What will be the output?
interface A{
	public void method1();
}
class One implements A{
	public void method1(){
		System.out.println("Class One method1");
	}
}
class Two extends One{
	public void method1(){
		System.out.println("Class Two method1");
	}
}
public class Test extends Two{
	public static void main(String[] args){
		A a = new Two();
		a.method1();
	}
}

4.
What will be the output of the following program code?
class Rectangle{
      public int area(int length, int width){
            return  length*width;
      }
}
class Square extends Rectangle{
      public int area(long length, long width){
            return  (int) Math.pow(length, 2);
      }
}
public class Test{
      public static void main(String args[]){
            Square r = new Square();
            System.out.println(r.area(5 , 4));
      }
}

5.
What will be printed after executing following program code?
class Base{
	int value = 0;
        Base(){
        	addValue();
        }
        void addValue(){
        	value += 10;
        }
        int getValue(){
        	return value;
        }
}
class Derived extends Base{
	Derived(){
		addValue();
	}
	void addValue(){
		value +=  20;
	}
}
public class Test{
	public static void main(String[] args){
		Base b = new Derived();
		System.out.println(b.getValue());
	}
}