Java

1 JAVA does not support

A) pointers
B) global variables
C) multiple inheritance
D) all of the above

... Answer is D)

2 An expression

A) usually evaluates to a numerical
B) may be a part of a statement
C) always occurs outside of a function
D) both a&b

... Answer is D)

3 in JAVA, a function contained with in a class is called

A) a member function
B) an operator
C) a class function
D) a method

... Answer is A)

4 main() returns a value of type

A) real
B) char
C) int
D) null

... Answer is D)

5 The dot operator connects the following 2 entities(reading from left to right)

A) a class member & class object
B) a class object &a class
C) a class & a member of that class
D) a class object & a member of that class

... Answer is D)

6 classes are useful because they

A) permit data to be hidden from other classes
B) bring together all aspects of an entity in one plan
C) can closely model objects in the real word
D) all of the above

... Answer is D)

7 which of the following expressions result in a positive value in x

A) int x=-1;x>>>5;
B) int x=-1;x=x>>>32
C) byte x=- 1;x=x>>>5;
D) int x=-1;x>>5;

... Answer is D)

8 what tags are mandatory when creating HTML to display an applet

A) name,hieght,width
B) code,name
C) codebase,hieght ,width
D) code,hieght,width

... Answer is D)

9 Java development kit include

A) appletviewer
B) java
C) javap
D) all of the above

... Answer is D)

10 Java standard library includes hundreds of classes and methods grouped into functional packages

A) 6
B) 7
C) 9
D) 10

... Answer is A)

11 class members are by default

A) private
B) protected
C) public
D) none of the above

... Answer is A)

12 Java uses to destroy a objects created by constructor

A) destructor()
B) destroyer()
C) finalize()
D) none of the above

... Answer is C)

13 Java contains the data types

A) struct
B) union
C) enum
D) none of the above

... Answer is D)

14 Java adds new operator such as instance of and

A) >>
B) <<
C) >>>
D) <<<

... Answer is C)

15 Java have a preprocessor

A) limited
B) one
C) two
D) does not have any

... Answer is D)

16 Java communicates with web page through special tag called

A)
B)
C)
D)

... Answer is A)

17 Java includes type of tokens

A) 2
B) 7
C) 8
D) 5

... Answer is D)

18 Java specifies major type of literals

A) 4
B) 5
C) 7
D) 6

... Answer is B)

19 new operator is used

A) to dynamically allocate storage
B) to statically allocate storage
C) to allocate storage for new variable
D) none of the above is correct

... Answer is C)

20 which of the following can legitimately be passed to a function

A) a constant
B) a variable
C) a structure
D) a header file

... Answer is B)

21 method overloading

A) are a group of function with same name
B) all have the same number and type of arguments
C) make life simpler for programmer
D) may fail unexpectedly due to stress

... Answer is A)

22 in a class specifier data or function designated private are accessible

A) to any function in the program
B) only if you know the password
C) to member functions of that class
D) only to public members of the class

... Answer is C)

23 In stack data item placed on the stack first is

A) not given an index number
B) given the index number 0
C) the first data item to be removed
D) the last data item to be removed

... Answer is D)

24 A floating point constant comprise

A) a whole number
B) a decimal point
C) a fractional part
D) all of the above

... Answer is D)

25 variable name should not be start with

A) digit
B) uppercase letter
C) lowercase letter
D) all of the above

... Answer is A)

26 When Java does the type conversion it is said to be

A) automatic type conversion
B) artificial type conversion
C) virtual type conversion
D) all of the above

... Answer is A)

27 what will be the value if n=1 of x and y after the following is a segment of a program:x=1;y=1;if(n>0) x=x+1;y=Y-1;

A) 20
B) 1,-1
C) 21
D) none of the above

... Answer is D)

28 In Java this keyword can be used anywhere

A) in the object
B) in dot notation
C) as an argument to a method
D) all of the above

... Answer is D)

29 method definitions have basic parts

A) the name of method
B) the type of object or primitive type returned by t
C) the body of the method
D) all of the above

... Answer is D)

30 in Java main() method takes how many no. of parameters

A) 1
B) 2
C) 3
D) 4

... Answer is A)

31 constructor method have

A) the same name as the class
B) not any return type
C) both option 1&2
D) none of the above

... Answer is C)

32 what is the output of the following program segment for(i=1,j=0;i<10 answers="" i="+i);</div> <ul class=" j="" system.out.println=""> A) 10
B) 20
C) 55
D) there is error in program

... Answer is C)

33 the ? Can be used to replace

A) returns the value
B) if then else
C) wild characters
D) no meaning

... Answer is B)

34 which one is false incase of vectors in Java

A) can hold objects of any type
B) objects of any number
C) objects have to be homogenous
D) all of the above

... Answer is C)

35 by using protected one can create class members that are private to their class but

A) that can't be inherited and accessed by a derived class
B) that can still be inherited and accessed by a derived class
C) that can be public
D) none of the above

... Answer is B)

36 the members of a class can be made private

A) declaring them private
B) by default they are private
C) by declaring them in the beginning of the program immediately after main()
D) they are always public

... Answer is B)

37 which of the following are valid methods in java

A) list.size()
B) list.addelement(item)
C) list.copyInto (array)
D) all of the above

... Answer is D)

38 vectors can handle primitive data types

A) int.char
B) float
C) long,double
D) none of the above

... Answer is D)

39 Packages are java's way of

A) grouping a variety of classes and interfaces together
B) grouping a variety of classes or interfaces together
C) both of the above
D) none of the above

... Answer is C)

40 there are ways of accessing the classes stored in a package

A) only one
B) two
C) three
D) four

... Answer is B)

41 in java if you want to import all the classes in a package you will use

A) import java.awr.*
B) import java.awt.all
C) import java.awt.every
D) none of the above

... Answer is A)

42 In java which is valid

A) like classes, interfaces are declared in source files
B) like classes,interfaces are also compiled into .class files using the java compiler
C) both 1& 2
D) none of the above

... Answer is C)

43 an end of line is indicated by the following

A) a newline character('\n')
B) a carriage return character('\r')
C) a carriage return followed by a newline
D) all of the above are correct

... Answer is D)

44 there are following phases in lifecycle of threads in java

A) three
B) four
C) five
D) two

... Answer is C)

45 a class hierarchy

A) shows the same relationships as an organisation chart
B) describes "has a" relationships
C) describes "is akind of"relationships
D) shows the samerelationships as a family tree

... Answer is C)

46 an array element is accessed using

A) a firstin first out approach
B) the dot operator
C) a member name
D) an index number

... Answer is D)

47 public,private,protected are

A) access keywords
B) structure keywords
C) exception keyword
D) not the keywords

... Answer is A)

48 exception keywords

A) throw
B) try
C) catch
D) all of the above

... Answer is D)

49 which one is bitwise operator

A) &&
B) ||
C) &
D) <<>

... Answer is C)

50 which one is comment indicator

A) ?
B) \\
C) //
D) ||

... Answer is C)

51 Which statement is true

A) java uses stdio.h header file
B) java uses string.h header files
C) java uses iostream.h header file
D) no header files are used in java

... Answer is D)

52 a static automatic variable is used to

A) make a variable visible to several function
B) make a variable visible to several function
C) converse memory when a function is not executing
D) retain a value a function is not executing.

... Answer is C)

53 In java the class cannot be subclassed is called

A) final class
B) finale class
C) ultimate class
D) no subclass

... Answer is A)

54 two dimentional can be defined as

A) array[4,6]
B) array[1..4,1..6]
C) array[4][6]
D) array(4,6)

... Answer is C)

55 mathematical functions are supported by java in

A) math class
B) arithmatic class
C) string class
D) maths class

... Answer is A)

56 loop operation are performed by

A) if-then-else
B) for statement
C) while statement
D) both 2 &3

... Answer is D)

57 in java to get the control out of loop we use

A) break
B) continue
C) both 1 &2
D) goto

... Answer is C)

58 java is said to be platform independent because

A) it can be executed on dos
B) it can be executed on unix
C) it can be executed on windows
D) all of the above

... Answer is D)

59 dynamic memory can be allocated by the following declaration

A) new
B) volatile
C) static
D) memory

... Answer is A)

60 a method that is called automatically when an object is created is known as

A) instantiation
B) function prototyping
C) constructor
D) structure

... Answer is C)

61 a method that automatically when an object is destroyed

A) function prototyping
B) constructor
C) destructor
D) finalize

... Answer is D)

62 special symbol used by java to document java packages and methods

A) doctags
B) documenttags
C) packagetags
D) docpacktags

... Answer is A)

63 which command is used to genrate API-style HTML documentation automatically

A) doctag
B) javadoc
C) javah
D) javap

... Answer is B)

64 a command that disassembles java.class files

A) javac
B) javav
C) javap
D) javad

... Answer is C)

65 the java debugger is

A) javaerror
B) javad
C) jab
D) jdb

... Answer is D)

66 JDK stands for

A) java debug kit
B) java developer kit
C) java database kit
D) java documentation kit

... Answer is B)

67 In java short is data type of length

A) 8 bits
B) 16 bits
C) 32 bits
D) 4 bits

... Answer is B)

68 API stands for

A) automatic programming interface
B) application programming interface
C) application programming imbedded
D) application pragram interaction

... Answer is B)

69 class error{ public static void main(string args[]){ system.out.println("hello java!")}

A) the output is hello java!
B) the output is error
C) the output is in two lines
D) the output is hello java java

... Answer is A)

70 which java class supports many methods that enable us to draw many types of shapes

A) drawing
B) graphs
C) graphics
D) drawpolygon

... Answer is C)

71 which operator is used to bitwise complement

A) -
B) +
C) --
D) <<

... Answer is A)

72 in java right shift operator is

A) >>
B) <<
C) <>
D) >>+

... Answer is A)

73 In java strings can be concatenated by using

A) +
B) *
C) ++
D) ||

... Answer is A)

74 Java supports

A) multithreading
B) automatic garbage collection
C) multidimentional array
D) Both 1 & 2

... Answer is D)

75 Java compose class libraries for applet and networking programming

A) java.awt
B) java.applet
C) java.net
D) all of the above

... Answer is D)

76 a command for running the java compiler

A) javarun
B) javado
C) javaexecute
D) javac

... Answer is D)

77 a base class is inherited by

A) derived class
B) inline function
C) constructor
D) none of the above

... Answer is A)


... Answer is C)

3 What is the term which represents the use of links between information of all sorts whether text, graphics, video or audio- based ?

A) Hypertext
B) Hypermedia
C) HyperCard
D) WildCard

... Answer is B)

4 Which of the following require large computer memory

A) Imaging
B) Graphics
C) Voice
D) All of the above

... Answer is D)

5 A term associated with the comparison of processing speeds of different computer systems is:

A) EFTS
B) MPG
C) MIPS
D) CPS

... Answer is C)

6 The retrieval of information from the computer is defined as

A) Collection of data
B) Data retrieval operations
C) Output
D) Data output collection

... Answer is C)