Java Core Classes and Threads

Question 1

Multiple choice

Which of the following methods in stack class java returns the element on the top of the stack, but does not remove it?

empty()
peek()
pop()
none of these

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Answer

capacity()

Answer

toString()

Answer

PushbackReader

Answer

LineNumberReader

Answer

PrintWriter

Answer

The method and the operator perform different operations.

Answer

lastIndexOf()

Answer

All of the above

Answer

This method uses a speed parameter to show the duration of effect with the given parameters.

Answer

All of the above

Answer

getInputStream()

Answer

isUpperCase()

Question 2

Multiple choice

Which of the following methods in vector class of java returns the capacity of the vector?

addElement()
clone()
none of these

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Question 3

Multiple choice

Which of the following methods in vector class of java returns the string equivalent of the vector?

size()
compareTo()
none of these

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Question 4

Multiple choice

Which of the following classes in java allows one or more characters to be returned to the input stream?

BufferedWriter
BufferedReader
None of these

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Question 5

Multiple choice

Which of the following in Java counts the number of lines in the input stream?

InputStreamReader
FilterReader
None of these

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Question 6

Multiple choice

Which of the following methods is used in string class of java to extract a single character from a string?

getChars()
charAt()
getBytes()
none of these

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Question 7

Multiple choice

Which of the following in java contains print() and println() methods?

Reader
Writer
None of these

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Question 8

Multiple choice

Which of the following statements about equals() method and '==' operator in java is correct?

The method and the operator perform the same operation.
There is no equals() method supported by java.
None of these

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Question 9

Multiple choice

Which of the following methods in string class of java searches for the last occurrence of a character or substring?

indexOf()
substring()
none of these

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Question 10

Multiple choice

Which of the following is/are the true statement(s) in java?

Final methods are faster than non-final methods.
Integer class is final in java.
Final classes are used for the security reasons.
Only (1) and (2)

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Question 11

Multiple choice

Which of the following event methods in javascript is the combination of the two functions?

blur()
hover()
dblclick()
focus()
none of the above

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Question 12

Multiple choice

What does fadeTo() method in jquery?

This method is used to stop the animation effect.
This method is used to hide the html element.
This method is used to show the html element.
None of the above

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Question 13

Multiple choice

What does CLR (Common Language Runtime) provide in .Net framework?

Memory management
Security
Exception handling
Garbage collection

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Question 14

Multiple choice

Which of the following methods of Process class in Java returns an input stream that reads input from the process out?

destroy()
getErrorStream()
getOutputStream()
exitValue()

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Question 15

Multiple choice

Which of the following character methods in Java returns true value, when an argument provided with a function is in uppercase?

toUpperCase()
toLowerCase()
toTitleCase()
isLetter()

Reveal answer Fill a bubble to check yourself

Java Core Classes and Threads

Java Core Classes and Threads Questions