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Which of the option correctly describes the comments in java1) // -- single line comment2) /* --*/ multiple line comment 3) /** --*/ documentation
A) 1, 2B) 2, 3C) 3, 1D) 1, 2, 3
sandeepcheema007
- Dec 21st, 2005
All these are legal comments in java.The third one, /**This is a comment */ might look new to c++ programmers,but it is very beneficial for the purpose of documentation,i.e. preparing a separate document file alongwith.
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What is the range of the char type?
A) long - 0 lB) float - 0.0 fC) double - 0.0 dD) char – null
Painter Mathavan
- Mar 14th, 2006
\u0000
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State true or false :- Can a double value be cast to a byte?
A) TrueB) False
sarika
- Jul 19th, 2006
It is false,but can anyone tell me the reason?
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State true or false :- The conditional operator is otherwise known as the ternary operator.
A) TrueB) False
RavindraPaliwal
- Jul 21st, 2006
The conditional operator x ? y : z is also called ternary operator.. But there are many other conditional operators like while, do..while but they are not know as conditional operator.
sadik
- Dec 30th, 2005
Yes,conditional operator is called as a ternary operator
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When an object is referenced, does this mean that it has been identified by the finalizer method for garbage collection?
A) TrueB) False
rajnish15_kumar
- Mar 29th, 2006
I also chose NO, but it has been told wrong.Y?I THINK SOMETHING WRONG THERE.
advitiya
- Dec 21st, 2005
NObecause of that,object can't free from memory when object is still reference
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When might your program wish to run the garbage collecter? (Select multiple)
A) before it enters a compute-intense section of codeB) before it enters a memory-intense section of codeC) before objects are finalizedD) when it knows there will be some idle time
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What is an example of polymorphism?
A) Inner classB) Anonymous classesC) Method overloadingD) Method overriding
Liramu
- Apr 19th, 2006
D) Method Overriding is an absolute example of Polymorphism...u can use the same name for several diff things and the compiler automatically figure out which version has to be invoked , perhaps there ...
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What are the advantages of inheritance? (Select multiple)
A) Reusability of codeB) accessibility of variables of the superclass by subclasses.C) Accessibility of methods of the superclass by subclasses.D) a,b are true
masarrat
- Jul 24th, 2006
A) Reusability of codeB) accessibility of variables of the superclass by subclasses.C) Accessibility of methods of the superclass by subclasses.
prajkta
- Feb 1st, 2006
all of aboveare true
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An interface contains __ methods
A) Non-abstractB) ImplementedC) unimplemented
ayisha
- Dec 26th, 2005
Unimplemented methods
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What is the use of valueOf( ) method?
A) It converts data from its internal format into a human-readable form.B) It converts integer value to stringC) It converts string to int valueD) None of the above
xxx
- Sep 10th, 2006
Whats wrong in the ans
parthu
- Feb 21st, 2006
valueOf() method is used to convert String into Integer Object if we are calling this method like Integer.valueOf("34");Float f=Float.valueOf("45.67");So answer is None of the above
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Which of the following are true?
A) The Void class extends the Class class.B) The Float class extends the Double class.C) The System class extends the Runtime class.D) The Integer class extends the Number class.
YEDANAPARTHI SYAM MOHAN
- Apr 4th, 2006
Void class (no constructor for this class) does not extend any class including Object. Integer, Float and Double Classes (all primitive data type extensions) extend Number Class, which...
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Which of the following statements are true?
A) UTF characters are all 8-bits.B) UTF characters are all 16-bits.C) UTF characters are all 24-bits.D) Unicode characters are all 16-bits.
abhishek79
- Mar 14th, 2007
the char datatype in java is of size 2 bytes that means 16 bits and support the unicode rather ascii in other languages so that format must beUTF-16Abhishek Gupta
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Which of the following are correct?
A) 128 >> 1 gives 64B) 128 >>> 1 gives 64C) 128 >> 1 gives -64D) 128 >>> 1 gives -64
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Enum is a Keyword in Java, introduced from J2SE 5
A) TrueB) False
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All of Swing's text components inherit from the same superclass
Skill/Topic: AWT & AppletsA) TrueB) False
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Extending a class is the way Java inherits methods and variables from a parent class.
Skill/Topic: AWT & AppletsA) TrueB) False
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Classes can implement methods and contain variables that are not constants
Skill/Topic: AWT & AppletsA) TrueB) False
mother
- Apr 9th, 2006
Bclasses can implement the variables and method that are defined constants only thing is it can't vary the values
praju_fresher
- Feb 1st, 2006
falseclasses can implement methods andcan contain var that r constants using final keywordex: final int MYID=12;in this way one can use var in their class
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________ enhance performance and functionality in various programming languages
Skill/Topic: AWT & AppletsA) threadsB) constantsC) variablesD) none of the above
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What is the use of taged interfaces?2.what is transactional context?explain with an example?
sudha
- May 23rd, 2006
Then what is marker interface.
praju_fresher
- Feb 1st, 2006
Tagged Interface:Interface without any method is known as tagged interface.
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Java Interview Questions
Ans