MCQ on Java Programming Language Fundamental set-12
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1. A java program is first ................ and ...................
A) executed, run
B) compiled, run
C) run, compiled
D) interpreted, compiled
2. Byte code is also a ...........
A) machine code
B) bit code
C) cryptographic code
D) none
3. A private class is accessible from inside a .................
A) package
B) class
C) method
D) none
4. Consider the statement "x=(a>b)?a:b", then the value of x is 19, if a=19 and b=12
A) true
B) not supported
C) false
D) none of the above
5. Adapter classes are used for ...............
A) code redundancy
B) code reduction
C) code organization
D) none
6. ..................... inheritance is enable by interface in java.
A) min level
B) multiple
C) low level
D) none
7. .................... is generated if a button is clicked in AWT.
A) ItemEvent
B) WindowEvent
C) ActionEvent
D) MouseEvent
8. Using which keyword we can access value of the instance and class variables of that class inside the method of that class itself.
A) super
B) final
C) this
D) either super or this
9. If a variable is declared FINAL, it must include ......................... value.
A) integer
B) number
C) initial
D) float
10. In java, string is a
A) primitive data type
B) abstract data type
C) combination of boolean
D) None of the above
11. Methods can be overloaded with a difference only in the type of the return value
A) Not supported
B) False
C) True
D) None of the above
12. Each method in a java class must have a unique name
A) Not necessarily
B) True
C) False
D) None of the above
13. It is an important feature of java that it always provides a default constructor to a class
A) Not supported
B) False
C) True
D) None of the above
14. If one or more abstract methods are not implemented in an abstract class, then the subclass is also abstract.
A) Not necessarily
B) False
C) True
D) None of the above
15. Life cycle of an applet is described by .................. methods.
A) six
B) three
C) four
D) five
16. Which of the following is not subclass of "writer" stream.
A) FileWriter
B) LineWriter
C) BufferedWriter
D) PrintWriter
17. In java RMI, stub is located in
A) client machine
B) proxy
C) server
D) none of the above
18. The new keyword will
i) create in instance of an object
ii) create instance of a class
iii) assign memory to an array
iv) call the destructor of a class
A) i and iii
B) ii and iii
C) i and ii
D) ii, iii and iv
19. ODBC stands for
A) Object Data Binding Command
B) Open Database Console
C) Open Database Connectivity
D) Open Database Command
20. Continue statement can be used
i) anywhere inside main method
ii) anywhere inside class
iii) within instance methods
iv) only within looping statements
A) i, ii and iii
B) i and iv
C) only iv
D) ii, iii and iv
Show/Hide Answers:
1. A java program is first ................ and ...................
B) compiled, run
2. Byte code is also a ...........
D) none
3. A private class is accessible from inside a .................
B) class
4. Consider the statement "x=(a>b)?a:b", then the value of x is 19, if a=19 and b=12
A) true
5. Adapter classes are used for ...............
B) code reduction
6. ..................... inheritance is enable by interface in java.
B) multiple
7. .................... is generated if a button is clicked in AWT.
C) ActionEvent
8. Using which keyword we can access value of the instance and class variables of that class inside the method of that class itself.
C) this
9. If a variable is declared FINAL, it must include ......................... value.
C) initial
10. In java, string is a
B) abstract data type
11. Methods can be overloaded with a difference only in the type of the return value
B) False
12. Each method in a java class must have a unique name
A) Not necessarily
13. It is an important feature of java that it always provides a default constructor to a class
C) True
14. If one or more abstract methods are not implemented in an abstract class, then the subclass is also abstract.
C) True
15. Life cycle of an applet is described by .................. methods.
C) four
16. Which of the following is not subclass of "writer" stream.
B) LineWriter
17. In java RMI, stub is located in
A) client machine
18. The new keyword will
i) create in instance of an object
ii) create instance of a class
iii) assign memory to an array
iv) call the destructor of a class
A) i and iii
B) ii and iii
C) i and ii
D) ii, iii and iv
19. ODBC stands for
A) Object Data Binding Command
B) Open Database Console
C) Open Database Connectivity
D) Open Database Command
20. Continue statement can be used
i) anywhere inside main method
ii) anywhere inside class
iii) within instance methods
iv) only within looping statements
C) only iv
5. Adapter classes are used for ...............
B) code reduction
6. ..................... inheritance is enable by interface in java.
B) multiple
7. .................... is generated if a button is clicked in AWT.
C) ActionEvent
8. Using which keyword we can access value of the instance and class variables of that class inside the method of that class itself.
C) this
9. If a variable is declared FINAL, it must include ......................... value.
C) initial
10. In java, string is a
B) abstract data type
11. Methods can be overloaded with a difference only in the type of the return value
B) False
12. Each method in a java class must have a unique name
A) Not necessarily
13. It is an important feature of java that it always provides a default constructor to a class
C) True
14. If one or more abstract methods are not implemented in an abstract class, then the subclass is also abstract.
C) True
15. Life cycle of an applet is described by .................. methods.
C) four
16. Which of the following is not subclass of "writer" stream.
B) LineWriter
17. In java RMI, stub is located in
A) client machine
18. The new keyword will
i) create in instance of an object
ii) create instance of a class
iii) assign memory to an array
iv) call the destructor of a class
A) i and iii
B) ii and iii
C) i and ii
D) ii, iii and iv
19. ODBC stands for
A) Object Data Binding Command
B) Open Database Console
C) Open Database Connectivity
D) Open Database Command
20. Continue statement can be used
i) anywhere inside main method
ii) anywhere inside class
iii) within instance methods
iv) only within looping statements
C) only iv
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