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 of the following statements is true?

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

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

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

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.

2 / 10

What will be the output of the program?

ABCD

ACD

3 / 10

Which statement is true?

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().

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.

4 / 10

Which one creates an instance of an array?

float fa = new float[20];

char[ ] ca = "Some String";

int ia[ ] [ ] = { 4, 5, 6 }, { 1,2,3 };

int[ ] ia = new int[15];

5 / 10

What will be the output of the program?

one two done

one two three two three done

one two three done

done

6 / 10

What will be the output of the program?

0..1..2..

Compilation fails

1..2..3..

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

7 / 10

What will be the output of the program?

String s = "ABC";

s.toLowerCase();

s += "def";

System.out.println(s);

Compile Error

ABCdef

ABC

abc

8 / 10

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

After line 10

After line 11

After line 9

Garbage collector never invoked in methodA()

9 / 10

You want subclasses in any package to have access to members of a superclass. Which is the most restrictive access that accomplishes this objective?

public

transient

protected

private

10 / 10

Assume the following method is properly synchronized and called from a thread A on an object B:

wait(2000);

After calling this method, when will the thread A become a candidate to get another turn at the CPU?

Two seconds after thread A is notified.

After the lock on B is released, or after two seconds.

After thread A is notified, or after two seconds.

Two seconds after lock B is released.

Your score is

We would love to see your feedback

JAVA Trial Simulation

Search Website

Important Links

My Account

Address