JAVA Trial Simulation

Java is a general-purpose programming language that is class-based, object-oriented. It is designed to have as few implementation dependencies as possible. It is intended to let application developers write once, run anywhere (WORA), meaning that compiled Java code can run on all platforms that support Java without the need for recompilation. Java applications are typically compiled to bytecode that can run on any Java virtual machine (JVM) regardless of the underlying computer architecture. The syntax of Java is similar to C and C++, but it has fewer low-level facilities than either of them.
These questions will give you basic idea for Examinations Preparation and/or interview on Java
● Language Fundamentals
● Operators and Assignments
● Exceptions
● Inner Classes
● Garbage Collections
● Java.lang Class
● Declarations and Access Control
● Flow Control
● Objects and Collections
● Threads
● Assertions

JAVA Trial Simulation

This digital Marketing Trial Simulation consists of 10 questions only.
Time Limit- 15 min.
The decision of the quiz-master will be final and will not be subjected to any change.
The participants shall not be allowed to use mobile or other electronic instruments.
The questions shall be in the form of multiple-choice, True / False statement, Specificanswer question, etc

1 / 10

Which statement is true?

Objects that have finalize() methods always have their finalize() methods called before the program ends.

Objects are not collected if they are accessible from live threads.

An OutOfMemory error is only thrown if a single block of memory cannot be found that is large enough for a particular requirement.

Memory is reclaimed by calling Runtime.gc().

2 / 10

What will be the output of the program?

It prints "barhi"

An error occurs at runtime.

It prints "foobarhi"

Compilation fails.

3 / 10

Which of the following statements is true?

With the proper use of runtime arguments, it is possible to instruct the VM to disable assertions for a certain class, and to enable assertions for a certain package, at the same time.

As of Java version 1.4, assertion statements are compiled by default.

When evaluating command-line arguments, the VM gives -ea flags precedence over -da flags

If assertions are compiled into a source file, and if no flags are included at runtime, assertions will execute by default.

4 / 10

Suppose that you would like to create an instance of a new Map that has an iteration order that is the same as the iteration order of an existing instance of a Map. Which concrete implementation of the Map interface should be used for the new instance?

LinkedHashMap

TreeMap

The answer depends on the implementation of the existing instance

HashMap

5 / 10

What will be the output of the program?

ACD

ABCD

6 / 10

What will be the output of the program?

1..2..3..

Compilation fails

0..1..2..

0..1..2..3..

7 / 10

Which two statements are true?

Deadlock will not occur if wait()/notify()is used
A thread will resume execution as soon as its sleep duration expires.
Synchronization can prevent two objects from being accessed by the same thread.
The wait()method is overloaded to accept a duration.
The notify()method is overloaded to accept a duration.
Both wait() and notify() must be called from a synchronized context.

1 and 2

1 and 3

4 and 6

3 and 5

8 / 10

Where will be the most chance of the garbage collector being invoked?

After line 11

After line 10

After line 9

Garbage collector never invoked in methodA()

9 / 10

The following block of code creates a Thread using a Runnable target:

Runnable target = new MyRunnable();

Thread myThread = new Thread(target);

Which of the following classes can be used to create the target, so that the preceding code compiles correctly?

public class MyRunnable extends Object{public void run(){}}

public class MyRunnable implements Runnable{public void run(){}}

public class MyRunnable implements Runnable{void run(){}}

public class MyRunnable extends Runnable{public void run(){}}

10 / 10

What will be the output of the program?

Prints "Inside Thread Inside Runnable"

Prints "Inside Thread Inside Thread"

Does not compile

Throws exception at runtime

Your score is

We would love to see your feedback

JAVA Trial Simulation

Search Website

Important Links

My Account

Address