Java Quiz – Java MCQ Online Test

The aspirants who have willing to gain knowledge regarding Java Multiple Choice Questions can check this post. This article includes the Java Quiz. Java plays a significant role during the interview these days especially for the Java recruiters and hiring department. The contenders can check this post thoroughly about the instructions and results regarding Java MCQ Online Test. We also provided every information in detailed to get rid of the problems often faced by the Java developers. So, give your time, in turn, we offer the best performance to learn the knowledge of Java Quiz. Students can practice Java Online Test with the help of this post.

Java Quiz Details

Java MCQ Quiz Instructions

Here, we have provided some general instructions regarding the practice of the test. The exam conducts in Multiple choice questions format. This quiz consists of totally 25 questions for each question there exist four options of which three are irrelevant and one correct answer. The contenders need to find out the correct answer from that four options. The results will compute in such a way that each correct answer carries one mark. There is no negative mark for the wrongly answered question. There is no time limit for the quiz. If the aspirants finish the exam before the time provided click on the submit button at the end of the test. The most important instruction is not to refresh the page in any situation while the test is going on.

Java Online Test

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1. Which one of the following is true for Java

A. Java is object oriented and interpreted

B. Java is efficient and faster than C

C. Java is the choice of everyone.

D. Java is not robust.

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2. What is known as the classes that extend Throwable class except RuntimeException and Error?

A. Checked Exception

B. Unchecked Exception

C. Error

D. None of the above

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3. Which type of validation we must implement the Validateable interface (or extend ActionSupport class) and provide the implementation of validate method?

A. By Input Validation

B. By Ajax Validation

C. By Custom Validation

D. None of the above

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4. Abbreviate the term DGC?

A. Digital Garbage Collection

B. Distributed Garbage Collection

C. Distributed Garbage Connection

D. None of the above

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5. What is function overriding?

A. If a subclass uses a method that is already provided by its parent class, it is known as Method Overriding.

B. If a subclass provides a specific implementation of a method that is already provided by its parent class, it is known as Method Overriding.

C. Both of the above.

D. None of the above.

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6. Java has its origin in

A. C programming language

B. PERRL

C. COBOL

D. Oak programming language

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7. Suppose a class has public visibility. In this class we define a protected method. Which of the following statements is correct?

A. This method is only accessible from inside the class itself and from inside all subclasses.

B. In a class, you cannot declare methods with a lower visibility than the visibility of the class in which it is defined.

C. From within protected methods you do not have access to public methods.

D. This method is accessible from within the class itself and from within all classes defined in the same package as the class itself.

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8. Which constructor creates an empty string buffer with the specified capacity as length.

A. StringBuffer()

B. StringBuffer(String str)

C. StringBuffer(int capacity)

D. None of the above

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9. Abbreviate the term OGNL?

A. Object-Goal Navigation Language

B. Object- Graph Navigation Language

C. Oriented-Graph Navigation Language

D. None of the above

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10. Which validates the given string with the specified regular expression,it can be used in password, security key etc.?

A. Regex Validation

B. Url Validation

C. Email Validation

D. RequiredString Validator

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11. Java Source Code is compiled into ______________.

A. Source Code

B. .Obj

C. .Exe

D. Bytecode

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12. Which class provides stream to read binary data such as image etc. from the request object?

A. ServltInputStream

B. ServletOutputStream

C. Both A & B

D. None of the above

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13. Which of the following is used to interpret and execute Java Applet Classes hosted by HTML.

A. appletshow

B. appletviewer

C. appletwatcher

D. appletscreen

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14. Java servlets are an efficient and powerful solution for creating ………….. for the web.

A. Dynamic content

B. Static content

C. Hardware

D. Both a and b

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15. Which is used for reading streams of raw bytes such as image data and for reading streams of characters, consider using FileReader?

A. FileInputStream

B. FileOutputStream

C. Both A & B

D. None of the above

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16. The command javac is used to

A. debug a java program

B. compile a java program

C. interpret a java program

D. execute a java program

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17. Which method is used to change the name of a thread?

A. public String getName()

B. public void setName(String name)

C. public void getName()

D. public String setName(String name)

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18. What will be the output of the program?

class PassA
{
public static void main(String [] args)
{
PassA p = new PassA();
p.start();
}

void start()
{
long [] a1 = {3,4,5};
long [] a2 = fix(a1);
System.out.print(a1[0] + a1[1] + a1[2] + " ");
System.out.println(a2[0] + a2[1] + a2[2]);
}

long [] fix(long [] a3)
{
a3[1] = 7;
return a3;
}
}

A. 12 15

B. 15 15

C. 3 4 5 3 7 5

D. 3 7 5 3 7 5

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19. Java programs are

A. Faster than others

B. Platform independent

C. Not reusable

D. Not scalable

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20. What of the following is the default value of a local variable?

A. null

B. 0

C. Depends upon the type of variable

D. Not assigned

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21. Which is the root class of all AWT events

A. java.awt.ActionEvent

B. java.awt.AWTEvent

C. java.awt.event.AWTEvent

D. java.awt.event.Event

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22. What will be the output of the program?

class PassS
{
public static void main(String [] args)
{
PassS p = new PassS();
p.start();
}

void start()
{
String s1 = "slip";
String s2 = fix(s1);
System.out.println(s1 + " " + s2);
}

String fix(String s1)
{
s1 = s1 + "stream";
System.out.print(s1 + " ");
return "stream";
}
}

A. slip stream

B. slipstream stream

C. stream slip stream

D. slipstream slip stream

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23. An RMI Server is responsible for _______

A. Creating an instance of the remote object

B. Exporting the remote object

C. Binding the instance of the remote object to the RMI registry

D. All mentioned above

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24. Which of the following is not a keyword in Java.

A. boolean

B. finalize

C. assert

D. abstract

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25. What is the range of byte data type in Java?

A. -128 to 127

B. -32768 to 32767

C. -2147483648 to 2147483647

D. None of the mentioned

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About Java Language

Java is mainly used to create all the applications that may run on a single computer or distributes to the server or the client. Java is a high-level programming language which is developed by Sun Microsystems. This language is also an object-oriented programming language. The developers can build code more comfortable in designing any applications with the help of Java. The syntax in Java is similar to the syntax in C++ but strictly contains classes, which uses to define objects and methods.

Benefits of Practicing Java Quiz

• The candidates can answer the question quickly and can learn the logic to answer the question in time.
• By practicing more, the aspirants can get perfection in the topics Java online test.
• Programmers will face the interview with more confidence and can get succeeded.

How To Check Java Online Test Results

After the completion of the Java MCQ Online Test, everyone will have the curiosity to know the performance of the test. For such candidates, our team has provided the results that exhibit the level of performance. In addition to the scorecard, for every question in the quiz is provided with the correct answer with the corresponding explanations which can give precise information regarding that topic. It helps aspirants to know about which topic the question is related. By this procedure, candidates can understand how to correct them in real – applications.

Expecting all the information provided above is useful to all the aspirants. Hence, the students can check Freshers Now to learn more programming languages.