Java Programming | Fifth Semester | Previous Year Question and Solution | Bicte Blog 2076 / 2077 / 2078 / 2079 | Bicte blog

 

The correct answers:

1. What is a constructor?

   - b. Input function that initializes variables

2. Why super keyword is used in inheritance?

   - b. To access member of the parent class

3. Why JDBC is there in Java?

   - c. To create a database and execute queries

4. How is a new class derived from an old class in Java?

   - a. class child extends parent()

5. Why is the static keyword always there in front of the main method in Java?

   - d. Because the main method needs to be invoked before any object instantiation

6. Which of the following is not a valid loop statement in Java?

   - c. for(false){}

7. What is late binding in Java?

   - b. Association of object and methods in runtime

8. Which of the following methods is used to execute an alter statement of SQL in a Java program?

   - c. executeUpdate()

9. Which of the following is not a string method in Java?

   - d. gets()

10. Exception class in Java is derived from

    - a. Throwable

The correct answers:

1. What stands for IRE?

   - a. Java Runtime Environment

2. Which statement is used for terminating loops?

   - a. break

3. Which statement is false about constructors?

   - c. It cannot contain arguments

4. Which of the following is valid syntax for single inheritance?

   - b. class A extends B

5. Which keyword is used for accessing members of the parent class?

   - c. super

6. How many numbers of threads can be in the ready state at a time?

   - d. many

7. Which of the following is a byte stream class?

   - c. FileInputStream

8. Which package contains classes related to event handling?

   - b. java.awt.event

9. What is the name of the method used for running insert commands in JDBC?

   - b. executeUpdate

10. Which of the following is the default access specifier for interfaces?

    - b. public

The correct answers:

1. Which of these keywords is used by a class to use an interface defined previously?

   - c. implements

2. In a Java program, which of the following is true about package declaration?

   - a. must precede

3. Which method is called internally by the Thread start() method?

   - d. run

4. Using which keyword can you access the value of the instance variables and class variables inside the method of the class?

   - d. either super or this

5. Which component is used to compile, debug, and execute a Java program?

   - b. JDK

6. Which of these keywords is not a part of exception handling?

   - c. thrown

7. Which of the following statements about abstract methods/classes in Java is true?

   - a. An abstract class cannot be instantiated.

8. Which keyword is used to insert an interface by another interface?

   - b. extends

9. What type of event is generated when the user presses the enter key in a JTextField?

   - a. ActionEvent

10. Which JDBC driver Type(s) is/are the JDBC-ODBC bridge?

    - a. Type 1