Quiz Discussion

Static members are not inherited to subclass.

Course Name: Java

  • 1]

    True

  • 2]

    False

Solution
No Solution Present Yet

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# Quiz
1
Discuss

In order to restrict a variable of a class from inheriting to subclass, how variable should be declared?

  • 1]

    Protected

  • 2]

    Private

  • 3]

    Public

  • 4]

    Static

Solution
2
Discuss

What will be the output of the following Java program?

    class A 
    {
        public int i;
        public int j;
        A() 
        {
            i = 1;
            j = 2;
	}
    }    
    class B extends A 
    {
        int a;
        B() 
        {
            super();
        } 
    }    
    class super_use 
    {
        public static void main(String args[])
        {
            B obj = new B();
            System.out.println(obj.i + " " + obj.j)     
        }
   }

 

  • 1]

    1 2
     

  • 2]

    2 1

  • 3]

    Runtime Error

  • 4]

    Compilation Error

Solution
3
Discuss

If super class and subclass have same variable name, which keyword should be used to use super class?

  • 1]

    super

  • 2]

    this

  • 3]

    upper

  • 4]

    classname

Solution
4
Discuss

Which of this keyword must be used to inherit a class?

  • 1]

    super

  • 2]

    this

  • 3]

    extent

  • 4]

    extends

Solution
5
Discuss

Which of the following is used in implementing inheritance through class?

  • 1]

    inherited

  • 2]

    using

  • 3]

    extends

  • 4]

    implements

Solution
6
Discuss

 A class member declared protected becomes a member of subclass of which type?

  • 1]

    public member

  • 2]

    private member

  • 3]

    protected member

  • 4]

    static member

Solution
7
Discuss

What would be the result if a class extends two interfaces and both have a method with same name and signature? Lets assume that the class is not implementing that method.

  • 1]

    Runtime error

  • 2]

    Compile time error

  • 3]

    Code runs successfully

  • 4]

    First called method is executed successfully

Solution
8
Discuss

Using which of the following, multiple inheritance in Java can be implemented?

  • 1]

    Interfaces

  • 2]

    Multithreading

  • 3]

    Protected methods

  • 4]

    Private methods

Solution
9
Discuss

All classes in Java are inherited from which class?

  • 1]

    java.lang.class

  • 2]

    java.class.inherited

  • 3]

    java.class.object

  • 4]

    java.lang.object

Solution
10
Discuss

Which of these is correct way of inheriting class A by class B?

  • 1]

    class B + class A {}

  • 2]

    class B inherits class A {}

  • 3]

    class B extends A {}

  • 4]

    class B extends class A {}

Solution
# Quiz