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What is the disadvantage of Garbage Collection?

It makes java memory efficient because the garbage collector removes the unreferenced objects from heap memory

both a and b

None of the above

The garbage collector automatically does it, so we don't need to make extra efforts

Correct! Wrong!

Which of the below is not a subinterface of Queue?

BlockingQueue

BlockingEnque

None of these

TransferQueue

Correct! Wrong!

Which of the following is true of the object thrown by a throw statement?

Should be assignable to the Exception type

Should be assignable to Throwable type

Should be assignable to String type

Should be assignable to the Error type

Correct! Wrong!

Which method is used to randomize all elements in a list?

randomize()

rand()

ambiguous()

shuffle()

Correct! Wrong!

Nameless object refers to _______

A reference object without a name.

Superclass object created in the subclass

An object without a reference.

An object created with a new keyword.

Correct! Wrong!

Which method is used to retrieve the elements in properties object at specific location?

get()

getProperty()

ElementAt()

Elementat()

Correct! Wrong!

Which of the following constant are defined in Character wrapper?

MAX_VALUE

TYPE

All of the mentioned

MAX_RADIX

Correct! Wrong!

Which method can be used to search an element in a list?

get()

sort()

binaryserach()

find()

Correct! Wrong!

Which of the following constructor is used to provide different values to distinct objects?

Parameterized constructor

Default constructor

None of the above

Overloading constructor

Correct! Wrong!

Which variables are created inside an object when we create an object by making use of a new keyword?

Class Variables

Static variables

Local variables

Instance variables

Correct! Wrong!

Which option is false about the final keyword?

A final method can be inherited.

A final class cannot extend other classes.

A final method cannot be overridden in its subclasses.

A final class cannot be extended.

Correct! Wrong!

What will happen if we call run() directly instead of start()?

None of these

the run() method goes onto the current call stack rather than at the beginning of a new call stack.

Both a and b

Each thread begins with a separate call stack.

Correct! Wrong!

What programming language(s) or scripting language(s) does Java Server Pages (JSP) support?

Java only

Jscript only

All of the above are supported

VBScript only

Correct! Wrong!

Which constructs an anonymous inner class instance?

Runnable r = new Runnable() { };

Runnable r = new Runnable { public void run(){}};

System.out.println(new Runnable() {public void run() { }});

Runnable r = new Runnable(public void run() { });

Correct! Wrong!

Which package is used for all the text related modifications?

java.text

java.awt

java.lang.text

java.text.modify

Correct! Wrong!

Which is a Basic interface that all other interface inherits?

List

Array

Set

Collection

Correct! Wrong!

How many JDBC driver types does Sun define?

Three

Four

Two

One

Correct! Wrong!

Which method is used to add an element and corresponding key to a map?

put()

set()

redo()

addd()

Correct! Wrong!

Which of the method is used to delete the last element in a LinkedList object?

remove()

delete()

deleteLast()

removeLast()

Correct! Wrong!

If an object acquires all the properties and behaviours of the parent object, then it is called as ________

Polymorphism

None of the above

Inheritance

Encapsulation

Correct! Wrong!

Java Quiz

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Can you solve these questions?

What is the disadvantage of Garbage Collection?

Which of the below is not a subinterface of Queue?

Which of the following is true of the object thrown by a throw statement?

Which method is used to randomize all elements in a list?

Nameless object refers to _______

Which method is used to retrieve the elements in properties object at specific location?

Which of the following constant are defined in Character wrapper?

Which method can be used to search an element in a list?

Which of the following constructor is used to provide different values to distinct objects?

Which variables are created inside an object when we create an object by making use of a new keyword?

Which option is false about the final keyword?

What will happen if we call run() directly instead of start()?

What programming language(s) or scripting language(s) does Java Server Pages (JSP) support?

Which constructs an anonymous inner class instance?

Which package is used for all the text related modifications?

Which is a Basic interface that all other interface inherits?

How many JDBC driver types does Sun define?

Which method is used to add an element and corresponding key to a map?

Which of the method is used to delete the last element in a LinkedList object?

If an object acquires all the properties and behaviours of the parent object, then it is called as ________

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New Classroom Batches Starting on 25th January

Welcome to ABC

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Talk to our Counsellor

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Can you solve these questions?

What is the disadvantage of Garbage Collection?

Which of the below is not a subinterface of Queue?

Which of the following is true of the object thrown by a throw statement?

Which method is used to randomize all elements in a list?

Nameless object refers to _______

Which method is used to retrieve the elements in properties object at specific location?

Which of the following constant are defined in Character wrapper?

Which method can be used to search an element in a list?

Which of the following constructor is used to provide different values to distinct objects?

Which variables are created inside an object when we create an object by making use of a new keyword?

Which option is false about the final keyword?

What will happen if we call run() directly instead of start()?

What programming language(s) or scripting language(s) does Java Server Pages (JSP) support?

Which constructs an anonymous inner class instance?

Which package is used for all the text related modifications?

Which is a Basic interface that all other interface inherits?

How many JDBC driver types does Sun define?

Which method is used to add an element and corresponding key to a map?

Which of the method is used to delete the last element in a LinkedList object?

If an object acquires all the properties and behaviours of the parent object, then it is called as ________

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