10211CS204 -OOPS using Java

Which of the following option leads to the portability and security of Java?

• 1. Bytecode is executed by JVM

• The applet makes the Java code secure and portable

• 1. Use of exception handling

• 1. Dynamic binding between objects

Which of the following is not a Java features?

• 1. Dynamic

• 1. Architecture Neutral

• 1. Use of pointers

• 1. Object-oriented

Which of the following for loop declaration is not valid?

• 1. for ( int i = 99; i >= 0; i / 9 )

• 1. for ( int i = 7; i <= 77; i += 7 )

• 1. for ( int i = 20; i >= 2; - -i )

• 1. for ( int i = 2; i <= 20; i = 2* i )

Which method of the Class.class is used to determine the name of a class represented by the class object as a String?

• 1. getClass()

• 1. intern()

• 1. getName()

• 1. toString()

Which package contains the Random class?

• 1. java.util package

• 1. java.lang package

• 1. java.awt package

• 1. java.io package

Which option is false about the final keyword?

• 1. A final method cannot be overridden in its subclasses.

• 1. A final class cannot be extended.

• 1. A final class cannot extend other classes.

• 1. A final method can be inherited.

Which of the following is a type of polymorphism in Java Programming?

• Multiple polymorphism

• Compile time polymorphism

• Multilevel polymorphism

• Execution time polymorphism

What will be the output of the following Java program?

1. class Output

2. {

3. public static void main(String args[])

4. {

5. int arr[] = {1, 2, 3, 4, 5};

6. for ( int i = 0; i < arr.length - 2; ++i)

7. System.out.println(arr[i] + " ");

8. }

9. }

• 1 2 3 4 5

• 1 2 3 4

• 1 2

• 1 2 3

Which of these keywords is used to define interfaces in Java?

• intf

• Intf

• interface

• Interface

Which of the following is a superclass of every class in Java?

• ArrayList

• Abstract class

• Object class

• String