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

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 one creates an instance of an array?

int[ ] ia = new int[15];

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

char[ ] ca = "Some String";

float fa = new float[20];

2 / 10

What will be the output of the program?

ABCD

ACD

3 / 10

What will be the output of the program?

one two three done

done

one two three two three done

one two done

4 / 10

What will be the output of the program?

Prints "Inside Thread Inside Thread"

Throws exception at runtime

Does not compile

Prints "Inside Thread Inside Runnable"

5 / 10

Given a method in a protected class, what access modifier do you use to restrict access to that method to only the other members of the same class?

final

private

static

protected

6 / 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?

After thread A is notified, or after two seconds.

Two seconds after thread A is notified.

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

Two seconds after lock B is released.

7 / 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?

The answer depends on the implementation of the existing instance

TreeMap

LinkedHashMap

HashMap

8 / 10

Which of the following statements is true?

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.

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.

9 / 10

What will be the output of the program?

It prints "barhi"

An error occurs at runtime.

Compilation fails.

It prints "foobarhi"

10 / 10

What is the numerical range of char?

-32768 to 32767

0 to 32767

-256 to 255

0 to 65535

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JAVA Trial Simulation

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