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

What will be the output of the program?

Compilation fails

1..2..3..

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

0..1..2..

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

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?

protected

static

final

private

5 / 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.

6 / 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?

private

protected

public

transient

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.

3 and 5

4 and 6

1 and 2

1 and 3

8 / 10

What will be the output of the program?

An error occurs at runtime.

It prints "foobarhi"

It prints "barhi"

Compilation fails.

9 / 10

What will be the output of the program?

Throws exception at runtime

Prints "Inside Thread Inside Thread"

Prints "Inside Thread Inside Runnable"

Does not compile

10 / 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

HashMap

The answer depends on the implementation of the existing instance

TreeMap

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JAVA Trial Simulation

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