Java MCQ Test Day-2

Which of these is not abstract?

• Thread

• List

• Array

• String

Which of these is not a correct statement?

• Every class containing abstract method must be declared abstract

• Abstract class defines only the structure of the class not its implementation

• Abstract class can be initiated by new operator

• Abstract class can be inherited

Which of these packages contains abstract keyword?

• java.lang

• java.io

• java.util

• java.System

what is the output of the following code?

• 2 2

• 3 3

• Run Time Error

• Compile Time Error

Which of these can be used to fully abstract a class from its implementation?

• Object

• Package

• Abstract Class

• Interfaces

Which of the following access specifiers should be used with interfaces?

• public

• private

• protected

• default

Which of the following is the correct way of implementing an interface salary by class manager?

• class manager extends salary {}

• class manager implements salary {}

• class manager imports salary {}

• class manager gets salary{}

What is the output of the following code

• 0

• 2

• 4

• compile time error

what is the output of the following code

• 0 1 2

• 0 2 4

• 0 0 4

• 0 1 4

What type of variable can be defined in an interface?

• public static

• public final

• private final

• static final