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Kasturba Srinivas

Asked: 3 years agoIn: Java

Do we have get(Object o) method in HashSet.

(a) True

(b) False

The question was posed to me by my school teacher while I was bunking the class.

Query is from Data Structures-Set in portion java.util – The Collections Framework of Java

Faraz Mathew

Asked: 3 years agoIn: Java

String in Java is a?

(a) class

(b) object

(c) variable

(d) character array

Kamini Kamdar

Asked: 3 years agoIn: Java

Which of the below is true about java class structure?

(a) The class name should start with lowercase

(b) The class should have thousands of lines of code

(c) The class should only contain those attribute and functionality which it should; hence keeping it short

(d) The class attributes and methods should be public

Urvashi Sen

Asked: 3 years agoIn: Java

Which of these access specifiers must be used for main() method?

(a) private

(b) public

(c) protected

(d) none of the mentioned

Azhar Dani

Asked: 3 years agoIn: Java

What happens if IP Address of host cannot be determined?

(a) The system exit with no message

(b) UnknownHostException is thrown

(c) IOException is thrown

(d) Temporary IP Address is assigned

Aniruddh Tandon

Asked: 3 years agoIn: Java

PriorityQueue is thread safe.

(a) True

(b) False

The question was asked during an interview.

My question is from Data Structures-Queue in portion java.util – The Collections Framework of Java

Mukti Agrawal

Asked: 3 years agoIn: Java

What is the difference between length() and size() of ArrayList?

(a) length() and size() return the same value

(b) length() is not defined in ArrayList

(c) size() is not defined in ArrayList

(d) length() returns the capacity of ArrayList and size() returns the actual number of elements stored in the list

Hari Wadhwa

Asked: 3 years agoIn: Java

What happens if ServerSocket is not able to listen on the specified port?

(a) The system exits gracefully with appropriate message

(b) The system will wait till port is free

(c) IOException is thrown when opening the socket

(d) PortOccupiedException is thrown

Sunita Saran

Asked: 3 years agoIn: Java

Which of these is a method of ListIterator used to obtain index of previous element?

(a) previous()

(b) previousIndex()

(c) back()

(d) goBack()

Hari Bhardwaj

Asked: 3 years agoIn: Java

What does Collections.emptySet() return?

(a) Immutable Set

(b) Mutable Set

(c) The type of Set depends on the parameter passed to the emptySet() method

(d) Null object

Load More Questions

Do we have get(Object o) method in HashSet.

(a) True

(b) False

The question was posed to me by my school teacher while I was bunking the class.

Query is from Data Structures-Set in portion java.util – The Collections Framework of Java

String in Java is a?

(a) class

(b) object

(c) variable

(d) character array

Which of these access specifiers must be used for main() method?

(a) private

(b) public

(c) protected

(d) none of the mentioned

What happens if IP Address of host cannot be determined?

(a) The system exit with no message

(b) UnknownHostException is thrown

(c) IOException is thrown

(d) Temporary IP Address is assigned

PriorityQueue is thread safe.

(a) True

(b) False

The question was asked during an interview.

My question is from Data Structures-Queue in portion java.util – The Collections Framework of Java

What happens if ServerSocket is not able to listen on the specified port?

(a) The system exits gracefully with appropriate message

(b) The system will wait till port is free

(c) IOException is thrown when opening the socket

(d) PortOccupiedException is thrown

Which of these is a method of ListIterator used to obtain index of previous element?

(a) previous()

(b) previousIndex()

(c) back()

(d) goBack()

What does Collections.emptySet() return?

(a) Immutable Set

(b) Mutable Set

(c) The type of Set depends on the parameter passed to the emptySet() method

(d) Null object

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