Java Objective Multiple Answer Questions Bank

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Java Question Bank
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Embedded Electronics
C Programming Interview Questions

1. In java, gc() method is available in which package

1.     java.lang package
2.     java.util package
3.     java.awt package
4.     java.io package

Answer: 1

2. JAR file contains the compressed version of

1.     .java file
2.     .class file
3.     .jsp file
4.     None of above

Answer: 2

3. Process of creating exact copy of the existing object is called

1.     cloning
2.     overloading
3.     overriding
4.     coping

Answer: 1

4. Which is the predefined package

1.     Lang package
2.     io package
3.     util package
4.     All of above

Answer: 1

5. Which among following classes is not part of Java's collection framework

1.     Queue
2.     Array
3.     Stack
4.     Maps

Answer: 1

6. Which command is used for interpretation of java program

1.     Java
2.     javac
3.     javap
4.     none of above

Answer: 1

7. What is meaning of jar

1.     java archived
2.     java array
3.     java architecture
4.     none of these

Answer: 1

8. Which of the following command is used to compile the Java program

1.     java
2.     javac
3.     javap
4.     none of these

Answer: 2

9. What do you mean by javap

1.     java compiler
2.     java Interpreter
3.     java Disassemble
4.     java debugger

Answer: 3

10. Hot java is

1.     System software
2.     Web browser
3.     IDE
4.     Java environment

Answer: 2


11. Java is known as _______stage language

1.     One
2.     Two
3.     Three
4.     Four

Answer: 2

12. Which driver is called as thin-driver in JDBC

1.     Type-1 driver
2.     Type-2 driver
3.     Type-3 driver
4.     Type-4 driver

Answer: 4

13. How many transaction isolation levels are defined in java.sql. Connection interface

1.     4
2.     3
3.     5
4.     2

Answer: 3

14. Which method of java is invoked by JVM to reclaim the inaccessible memory location

1.     reclaim() method
2.     final() method
3.     finalize() method
4.     both b and c

Answer: 3

15. ____ allows java code to run in the JVM to call and be called by native applications

1.     JFI
2.     JNI
3.     NJI
4.     FJI

Answer: 2

16. Interfaces helps in which type of inheritance

1.     Multiple inheritance
2.     Multilevel inheritance
3.     Hierarchical inheritance
4.     None of above

Answer: 1

17. If nested try is possible

1.     Yes
2.     No

Answer: 1

18. Applet always executed on

1.     Client side
2.     Server Side

Answer: 1

19. Which method of the Applet class displays the result of applet code on screen

1.     run() method
2.     paint() method
3.     drawString() method
4.     main() method

Answer: 2

20. There is no default transaction attribute for an EJB
    False
    True
Answer: 2

21. Which command disassembles a class file

1.     javaamd
2.     javacmd
3.     java
4.     javap

Answer: 4

22. The inner class can access private members of the outer class

1.     False
2.     True

Answer: 2

23. In which we clone the object and their constituent parts

1.     Shallow cloning
2.     Deep cloning
3.     Both of above
4.     None of above

Answer: 2

24. Private Constructors can't be access from any derived classes neither from another class

1.     True
2.     False

Answer: 1

25. Which driver is efficient and always preferable for using JDBC applications

1.     Type-4 driver
2.     Type-3 driver
3.     Type-2 driver
4.     Type-1 driver

Answer: 1

26. Executable applet is

1.     .applet file
2.     .java html
3.     .java file
4.     .class file

Answer: 4

27. Which keyword is used while using interface

1.     extend
2.     implements
3.     throw
4.     throws

Answer: 2

28. Which keyword represents object of the present class

1.     interface
2.     package
3.     this
4.     static

Answer: 3

29. Which method can't be overridden

1.     super
2.     static
3.     final
4.     println

Answer: 3

30. what is jdb
    java compiler
    java Interpreter
    java Disassemble
    java debugger
Answer: 4

31. javah stands for

1.     java compiler
2.     java interpreter
3.     java dissasamebler
4.     java header file

Answer: 4

32. Main method parameter has which type of data type

1.     int
2.     char
3.     string
4.     double

Answer: 3

33. How many keywords are available in java

1.     35
2.     55
3.     48
4.     130

Answer: 3

34. Smallest individual unit in java program is known as

1.     string
2.     literal
3.     token
4.     operator

Answer: 3

35. Java intermediate code is known as

1.     First code
2.     Mid code
3.     Byte code
4.     None of above

Answer: 3