94 Best Java Questions and Answers (Q&A) - ProProfs Discuss

Which two code fragments correctly create and initialize a static array of int elements? (Choose two.)

VMANNI
Answered: Apr 29, 2024

Static final int[] a = { 100,200 };
Static final int [] a; static { a=new int[2]; a[0]=100; a[1]=200; }

1 Answer

271 views

What is the difference between JVM and JRE?

L. Agate
Answered: Oct 11, 2019

JVM stands for Java Virtual Machine, and JRE is the acronym for Java Runtime Environment. A JVM is an abstract computing machine that enables a computer to run a Java program. There are three...Read More

2 Answers

264 views

Which three are valid declarations of a char?

Answered: Apr 29, 2024

Char c1 = 064770;
Char c3 = 0xbeef;
Char c6 = \uface ;

(1), (3), and (6) are correct. char c1 = 064770; is an octal representation of the integer value 27128, which is legal...Read More

1 Answer

257 views

What is the correct boolean expression which gives the following meaning : The value of x is greater than 1000 and x is smaller or equal to 2000?

Chris Evins, College Student
Answered: Dec 02, 2019

The correct answer to this question is X > 1000 && x ...Read More

3 Answers

245 views

Is Java different than JavaScript?

C.Dorothy
Answered: Feb 28, 2018

Java and Javascript seem very similar in name and one might be tempted to believe that they are in fact the same thing. However, Java and Javascript are two different things. Java runs on many...Read More

2 Answers

245 views

What is a JSP page?

G.Carol
Answered: Feb 19, 2018

With the modern world and the internet boom, there are a number of different internet pages that have come into existence. Of course, web developers understand the internet language better, but...Read More

2 Answers

244 views

How can you run a Java program without main method?

Mudda Prince
Answered: Aug 21, 2019

Java is actually a foundation for all kinds of networked applications, not only that this is the global standard for developing embedded and mobile applications, web application, online games,...Read More

2 Answers

239 views

How do you test interfaces?

C. Marcus, Content Developer
Answered: Jun 28, 2018

Interface testing is something that is done by people in order to check if the connection between two destinations is correct. These two destinations should have the ability to communicate very...Read More

3 Answers

235 views

Why is string emulated in Java?

Perry Shelly, Java Tutorial
Answered: Aug 08, 2020

The String is Immutable in Java because String objects are stored in the String pool. Since stored String literals are shared between various customers, there is consistently a hazard where one...Read More

1 Answer

235 views

What will be the output of the following code segment?

John Smith
Answered: Apr 29, 2024

Compile-time error

Non-static variable cannot be referenced from a static context. a is a non-static variable, it cannot be referenced from within main() which is static.

1 Answer

231 views

What is the difference between Eclipse and Myeclipse?

Chris Kenway, Content Writer
Answered: Jul 27, 2020

Eclipse and MyEclipse look similar, and you might think the difference is just the “MY,” while in a real sense, they are different.
Eclipse is a platform for developing java...Read More

3 Answers

128 views

What is the difference between Actionscript 2.0 and Actionscript 3.0?

E.Evelyn
Answered: May 28, 2020

AS2 and AS3 are known to be two different languages that run on different virtual machines. Take note that the codes that are available in the AS2 come with AS3 equivalents just in case you would...Read More

2 Answers

102 views

What is the difference between AWT and Swing?

J. Lautner, Product Manager
Answered: Jul 28, 2020

AWT or Abstract Window Toolkit and swing are two components of GUI (Graphical User Interface). One of the major differences between AWT and swing is that; while the former uses native commands on...Read More

3 Answers

99 views

What is the difference between CSS and JavaScript?

Todd Gurley
Answered: Aug 05, 2020

CSS is an abbreviation for Cascading Style Sheets, which is an application used for the formatting or designing of web pages. The CSS however, does not work in isolation; it is designed to be...Read More

4 Answers

97 views

What is the difference between Synchronous and Asynchronous?

E. James
Answered: Mar 17, 2020

Synchronous means that all events are occurring in a specific order, which can be predicted. In the asynchronous process, there is no time order. An asynchronous example is music, where instruments...Read More

1 Answer

96 views

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