OOPs Fundamentals

Which statement is true about Java?

• Java is a sequence-dependent programming language

• Java is a code dependent programming language

• Java is a platform-dependent programming language

• Java is a platform-independent programming language

Which one of the following is not a Java feature?

• Object-oriented

• Use of pointers

• Portable

• Dynamic and Extensible

Which of the following is a feature of Java's memory management?

• Automatic garbage collection

• Manual memory allocation

• Static memory allocation

• Memory leaks are not possible

What is the main purpose of the Java Virtual Machine (JVM)?

• To manage database connections

• To provide a graphical user interface

• To execute Java bytecode

• To compile Java code into bytecode

Which of the following keywords is used to create a class in Java?

• define

• class

• new

• object

What will be the output of the following Java code?

1. class increment

2. {

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

4. {

5. int g = 3;

6. System.out.print(++g * 8);

7. }

8. }

• 32

• 45

• 33

• 22

Which of the following is a valid way to declare an array in Java?

• int[] arr;

• int arr{};

• array int arr;

• int arr[];

What is the default value of a boolean variable in Java?

• 1

• 0

• false

• true

What will be the output of the following Java program?

1. class variable_scope

2. {

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

4. {

5. int x;

6. x = 5;

7. {

8. int y = 6;

9. System.out.print(x + " " + y);

10. }

11. System.out.println(x + " " + y);

12. }

13. }

• Compilation error

• Runtime error

• 5 6 5 6

• 5 6 5

Which of the following is a valid way to create an object in Java?

• new Object();

• Object obj = new Object;

• Object obj = Object();

• Object obj = new Object[];