Java Programming MCQ Questions and Answers PDF 2023

Java is one of the most popular programming language ​​and platform. Java is fast, reliable and secure. 

Java is a high level, robust, object-oriented and secure programming language. Java was originally developed by Sun Microsystems (which is now the subsidiary of Oracle) in the year 1995. James Gosling is known as the father of Java. Before Java, its name was Oak. Since Oak was already a registered company, so James Gosling and his team changed the name from Oak to Java.

As of September 2023, Java 19 is the latest version, while Java 17, 11 and 8 are the current long-term support (LTS) versions.

MCQs for Java Programming – Questions and Answers

1. Who founded Java Programming?

a) Guido van Rossum
b) James Gosling
c) Dennis Ritchie
d) Bjarne Stroustrup

2. What part is used to compile, debug and execute java programs?

a) JRE
b) JIT
c) JDK
d) JVM

3. What difference does it make when java is out of memory?

a) MemoryError
b) OutOfMemoryError
c) MemoryOutOfBoundsException
d) MemoryFullException

4. Which of these selection statements in Java do you have?

a) a break
b) continue
c) for ()
d) if ()

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

a) intf
b) Intf
c) interface
d) Interface

6. Which of the following is the superclass of all Java classes?

a) Array List
b) Abstract Class
c) Object class
d) String

7. Which of the following is not a Java Profiler?

a) JProfiler
b) Eclipse Profile
c) JVM
d) JConsole

8. Which of these packages contains the stack overflow variant in Java?

a) java.io
b) java.system
c) java.lang
d) java.util

9. Which of these statements are wrong about Thread?

a) start () method is used to start a thread function
b) run () method is used to start a thread process before start the () method in special cases
c) The thread can be created using only the runnable interface
d) The thread can be made of a class that extends to the Thread class

10. Which of these keywords is used to block an exception?

a) check
b) throw
c) catch
d) try

11. Which of the following is not an access modifier?

a) Protected
b) Void
c) Public
d) Confidential

12. What is the range for the type of char data in Java?

a) 0 to 256
b) -128 to 127
c) 0 to 65535
d) 0 to 32767

13. Which section provides for the implementation of the private server side of the system?

a) Server
b) ServerReader
c) Socket
d) ServerSocket

14. ​​Which of the following is true of servers?

a) Resources can use the full functionality of Java class libraries
b) The resources operate within the web server’s domain, private domain and use the functionality of the java category libraries
c) Applications run within the web server address area
d) The servlets are independent in one place because they are labeled with java

15. What is the expansion of the compiled java classes?

a) .txt
b) .js
c) .class
d) .java

Be it playing games, withdrawing money from ATMs, or shopping online or booking a plane ticket; Java code is helpful for all of these activities. Java is a strong and secure language and that is what makes it a favorite for developers to do such projects. Being able to write code in Java opens the door to many opportunities. So configure and try these projects to build your profile in Java.

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