Question 1

In a node cluster, the Process Sentinels ($SWDIR\etc\procmgr) have a master process on one of the servers, which manages and controls slave process Sentinels on all the other servers in the node cluster.

technology platforms and products

True
False

Answer

Correct Option: B

Question 2

Can we have try block with out catch?

technology platforms and products

True
False

Answer

Correct Option: A

Question 3

Java Exception Class is the subclass of

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java.lang.Error
java.lang.Throwable
java.lang.Util
java.lang.CheckedException

Answer

Correct Option: B

Question 4

What is StackOverflowError and OutOfMemoryError?

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UncheckedException
CheckedException
Error
UnspecifiedException

Answer

Correct Option: C

Question 5

What will happen to the Exception object after exception handling?

technology platforms and products

It will go for Garbage Collector
It remains in Stack
It will not create any object
Exception objects will not put load on JVM

Answer

Correct Option: A

Question 6

What is NullPointerException

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UncheckedException
CheckedException
Error
UnspecifiedException

Answer

Correct Option: A

Question 7

In HashMap we can add one null key and null value?

technology platforms and products

True
False

Answer

Correct Option: B

Question 8

LinkedList is faster than ArrayList if we frequently add and remove the elements?

technology platforms and products

True
False

Answer

Correct Option: B

Question 9

Class.forName (String className) is a Dynamic class loading?

technology platforms and products

True
False

Answer

Correct Option: B

Question 10

The 'is-a' relationship is one of 'generalization'

technology platforms and products

True
False

Answer

Correct Option: B

Question 11

public abstract final method-name(arguments) {} //Can not be compiled?

technology platforms and products

True
False

Answer

Correct Option: B

Question 12

Java supports 'Pass-By-Reference'

technology platforms and products

True
False

Answer

Correct Option: B

Question 13

We can extends String class.

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True
False

Answer

Correct Option: B

Question 14

A transient variable can not be serialized.

technology platforms and products

True
False

Answer

Correct Option: A

Question 15

What is this() in class?

technology platforms and products

this() can be used to invoke a constructor of the same class
this() will create the object of the same class
There is no function called this(). It is a key word.
this() will invoke the constructor of subclass

Answer

Correct Option: A

Question 16

How can a dead thread be restarted?

technology platforms and products

Thread.start()
Thread.run()
Thread.yield()
A dead thread cannot be restarted.

Answer

Correct Option: D

Question 17

A Factory Pattern is a ___________

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singleton pattern.
creational pattern.
command design pattern.
composite design pattern.

Answer

Correct Option: B

Question 18

Which Java operator is right associative?

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=
+
>>
<

Answer

Correct Option: A

Question 19

StringBuffer vs StingBuilder

technology platforms and products

StringBuilder is immutable but StringBuffer is mutable.
StringBuffer is immutable but StringBuilder is mutable.
StringBuffer is Synchronized but StringBuilder is not.
They both are immutable.

Answer

Correct Option: C

Question 20

A Java Thread can be created by ____________

technology platforms and products

Implementing Thread interface.
Implementing Cloneable interface.
Implementing the Runnable interface.
We can not create a Thread, JVM has to create it by it's own.

Answer

Correct Option: C

Description: platforms and products Online Quiz - 47
Number of Questions: 20
Created by: Aliensbrain Bot
Tags: platforms and products

platforms and products Online Quiz - 47

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