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Quiz on Java Features

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quiz on java features

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Want to test your knowledge of Java’s core features? Dive into this interactive quiz designed to assess your understanding of fundamental Java concepts. Whether you’re a seasoned developer or just starting your Java journey, this quiz offers a valuable opportunity to solidify your grasp of essential syntax, object-oriented programming principles, and core functionalities.

This quiz utilizes a multiple-choice format, making it a quick and efficient way to gauge your strengths and identify areas where you might benefit from further study. So, put your Java skills to the test and see how you fare! Let’s test your knowledge.

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  1. Question 1 of 15
    1. Question

    Which is used to access the class and methods in Java?

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  2. Question 2 of 15
    2. Question

     Which features make JAVA a more secure one?

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  3. Question 3 of 15
    3. Question

    Which classes are used to inherit the classes in java ?

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  4. Question 4 of 15
    4. Question

    The Java compiler converts the program into bytecode and sends it to the JVM. Until it sends, the bytecode is saved with what extension file?

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    Incorrect
  5. Question 5 of 15
    5. Question

     Which helps to link the program with native C and C++ library files  after loading?

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    Incorrect
  6. Question 6 of 15
    6. Question

    What are the things that are deleted in this program by garbage collection?

    class Example

    {

       public static void main(String arg[])

       {

           System.out.println(“Welcome To DataFlair”);

           String s = “Hello”;

           System.out.println(“Hello”);

           Integer a =  new Integer(123);    

       }

    }

    Correct
    Incorrect
  7. Question 7 of 15
    7. Question

    Which concept in java  is used when we want to clean the application and are used in the background?

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  8. Question 8 of 15
    8. Question

    To avoid thread polling in JAVA what concept should be introduced?

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  9. Question 9 of 15
    9. Question

    Rather than Extending a thread class what is another way to create a thread ?

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    Incorrect
  10. Question 10 of 15
    10. Question

    What will be the output of the program?

     public class Demo implements Runnable

          {

             public static void main(String args [] )

              {

                 Thread Firstname = new Thread(“Data”);

    Thread Lastname = new Thread(“Flair”);

    Firstname.start();

    Lastname.start();

    System.out.println(“The full name is”);

    System,out.println(Firstname.getname()+ Lastname.getname());

    }

    @Override

    public void run()

    {

     

    }

    }

    Correct
    Incorrect
  11. Question 11 of 15
    11. Question

    The given program is an example of which Java concept?\

     public class Demo implements Runnable

          {

             public static void main(String args [] )

              {

                 Thread Firstname = new Thread(“Data”);

    Thread Lastname = new Thread(“Flair”);

    Firstname.start();

    Lastname.start();

    System.out.println(“The full name is”);

    System,out.println(Firstname.getname());

     System.out.println(Lastname.getname()) ;

    }

    @Override

    public void run()

    {

    }

    }

    Correct
    Incorrect
  12. Question 12 of 15
    12. Question

    Object code produced for a non existing CPU but run with the help of JVM in another CPU is an example of which type of portability?

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  13. Question 13 of 15
    13. Question

     Java Source code compiled in any program can be executed in any other system. Justify?

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  14. Question 14 of 15
    14. Question

    Which concept makes the system secure and executes the program in the sandbox?

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    Incorrect
  15. Question 15 of 15
    15. Question

    Which of the following are the ways to write a JAVA Program?

    Correct
    Incorrect

Summary:

Congratulations on completing the Java Features Quiz! By taking this quiz, you’ve gained valuable insights into your understanding of key Java concepts. A high score indicates a strong grasp of the fundamentals, while a lower score pinpoints areas for further exploration.

Remember, effective learning in Java is an ongoing process. Don’t stop here! Utilize the vast array of resources available online, including courses, tutorials, and practice problems.

Engaging with online communities and forums can further enhance your knowledge by allowing you to connect with other Java developers and exchange ideas. By actively pursuing continuous learning, you’ll solidify your understanding of Java and stay ahead of the curve in this ever-evolving programming language.

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