MCAB1

Name

Roll No

What is the process of defining two or more methods within same class that have same name but different parameters declaration?

• method overloading
• b) method overriding
• c) method hiding
• d) none of the mentioned

What will be the output of the following Java code? class San { public void m1 (int i,float f) { System.out.println(" int float method"); } public void m1(float f,int i); { System.out.println("float int method"); } public static void main(String[]args) { San s=new San(); s.m1(20,20); } } `

• int float method

• b) float int method

• c) compile time error

• d) run time error

What will be the output of the following Java code? class overload { int x; double y; void add(int a , int b) { x = a + b; } void add(double c , double d) { y = c + d; } overload() { this.x = 0; this.y = 0; } } class Overload_methods { public static void main(String args[]) { overload obj = new overload(); int a = 2; double b = 3.2; obj.add(a, a); obj.add(b, b); System.out.println(obj.x + " " + obj.y); } }

• 6 6
• b) 6.4 6.4
• c) 6.4 6
• d) 4 6.4

Which of this keyword can be used in a subclass to call the constructor of superclass?

• super
• b) this
• c) extent
• d) extends

Which of these keywords can be used to prevent Method overriding?

• static
• b) constant
• c) protected
• d) fina

Which of these is correct way of calling a constructor having no parameters, of superclass A by subclass B?

• super(void);
• b) superclass.();
• c) super.A();
• d) super();

Which of these is supported by method overriding in Java?

• Abstraction
• b) Encapsulation
• c) Polymorphism
• d) None of the mentioned

What will be the output of the following Java program?final class A { int i; } class B extends A { int j; System.out.println(j + " " + i); } class inheritance { public static void main(String args[]) { B obj = new B(); obj.display(); } }

• 2 2
• b) 3 3
• c) Runtime Error
• d) Compilation Error