JAVA INTERNSHIP

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1️⃣ Exam Details:

✅ Total Questions: (25 Questions)
✅ Exam Duration: (10 Minutes)

✅ Exam Type: MCQs

2️⃣ System Requirements:

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The number of attempts remaining is 2

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1 / 25

1. What is the result of the following Java expression?

System.out.println(Hello" + 1 + 2);

2 / 25

2. What will be the output of this Java code?

public class Test

{

            public static void main(String[] args)

            {

                        for (int i = 0; i <= 5; i++)

                        {                      

                                    System.out.print(i + " ");

                        }

            }

}

3 / 25

3. What happens if you try to assign a value to a final variable?

4 / 25

4. What will the output of this code be? 

    public class Test {

        public static void main(String[] args) {

            int[] arr = new int[3];

            System.out.println(arr[0]);

        }

    }

5 / 25

5. What is the result of this code?

   public class Test {

       public static void main(String[] args) {

           String s = "Java";

           s = s.concat(" Programming");

           System.out.println(s);

       }

   }

6 / 25

6. Which of the following is true about Java Strings?

7 / 25

7. What does JNI stand for?

8 / 25

8. What is the output of the following code? 

    public class Test {

        public static void main(String[] args) {

            String str = "Java";

            str += " Programming";

            System.out.println(str);

        }

    }

9 / 25

9. What is the function of the 'hashCode()' method in Java?

10 / 25

10. Which of the following keywords is used for exception handling?

11 / 25

11. What will the output be for the following code? 

   public class Main {

       public static void main(String[] args) {

           String str = "Hello";

           str.toUpperCase();

           System.out.println(str);

       }

   }

12 / 25

12. What will be the output of the following code? 

   public class Test {

       public static void main(String[] args) {

           System.out.println(10 + 20 + "Hello");

       }

   }

13 / 25

13. Which keyword is used to prevent method overriding in Java?

14 / 25

14. What is the default value of an uninitialized boolean variable in Java?

15 / 25

15. What will be the output of this code? 

    public class Test {

        public static void main(String[] args) {

            int x = 5;

            for (int i = 1; i <= 5; i++) {

                x += i;

            }

            System.out.println(x);

        }

    }

16 / 25

16. How do you implement multiple inheritance in Java?

17 / 25

17. What are the different types of exceptions in Java?

18 / 25

18. What are Collections in Java?

19 / 25

19. How can you convert a date to a string in Java?

20 / 25

20. What is the role of Callable in Java?

21 / 25

21. Explain Optional and its use in Java.

22 / 25

22. How do you implement an inner class in Java?

23 / 25

23. How do you handle multiple exceptions in a single catch block?

24 / 25

24. What is the usage of the synchronized keyword in Java?

25 / 25

25. What is an Iterator in Java?