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

What would be the output for the following code? String word = "abcde"; for (int i = 0; i

B. Mary, Health Care manager
Answered: Dec 02, 2019

The correct answer to this question is Ac. Strings are a part of the programming language called Java. Java is an acronym, which stands for Java Standard Edition. When it comes to string...Read More

2 Answers

3735 views

What does session.createCriteria().uniqueResult() return?

Kvpbusiness
Answered: Jan 19, 2025

Object

1 Answer

2054 views

Is Java Structured Programming Language?

Pwndz
Answered: Mar 16, 2020

Yes. What makes a language structure is the presence of stuctured control. Control like if/else, for, while loops etc. Java has that.

2 Answers

1834 views

What are the three valid declarations of a char?

John Smith
Answered: Jan 19, 2025

Char c1 = 064770;-2. Char c3 = 0xbeef;-3. Char c6 = &092; &092;&092;uface&092; ; Char c1 = 064770; is an octal representation of the integer value 27128, which is legal beca...Read More

1 Answer

1736 views

Which of the following are legal identifiers in Java?

Bobby Rickets, Content Reviewer
Answered: Nov 11, 2018

Java is a programming language often seen in computers or when discussing computers. There are several different computer languages today, but Java is a very popular one. There are differences...Read More

4 Answers

1624 views

What is a valid statement about Apex classes and interfaces in java?

Ken Wilson, Marketing Analyst
Answered: Dec 14, 2018

This question has two answers: both 1 and 2 are correct. When considering which of the choices listed above that would be a valid statement about Apex classes and interfaces in java, the default...Read More

2 Answers

1422 views

What are some facts about Java Database Connectivity(JDBC)?

J. Emmerich, Web Content Writer
Answered: Aug 08, 2018

JDBC stands for Java Database Connectivity and it is an API (application programming interface) to access relational databases, spreadsheets, and flat files. The clients of this application can...Read More

3 Answers

1397 views

Are Java keywords written in lowercase as well as uppercase?

H. Barnes, Unemployed
Answered: Aug 01, 2019

False
Java keywords are not written in lowercase as well as uppercase. JavaScript is known to be case sensitive. All the keywords are the small case in the original java version. Therefore,...Read More

3 Answers

1390 views

How many objects and reference variables are created code?

Chris Evins, College Student
Answered: Dec 02, 2019

There are two correct answers to this question. Three reference variables created. The three reference variables which are created are a thing, item, and stuff. The first object created is the...Read More

3 Answers

1191 views

What do you understand by class java.util.ArrayList?

H. Martin, Content Writer
Answered: Jul 17, 2018

The right statement is that the elements in the collection are ordered. This is because a state of order is more likely ad the collection is more likely to be ordered. There are multiple reasons...Read More

3 Answers

1169 views

Can you name one non-primitive data type in Java programming language?

John Smith
Answered: Jan 19, 2025

String

1 Answer

1144 views

What is the valid declarations within an interface definition?

AnandVR
Answered: Jan 19, 2025

Public double methoda();

Option A is correct. A public access modifier is acceptable. The method prototypes in an interface are all abstract by virtue of their declaration, and should not...Read More

1 Answer

1133 views

What happens if you call the method close() on a ResultSet object in java?

M. Porter, Senior Executive
Answered: Dec 14, 2018

The database and JDBC resources are released if you call the method close() on a ResultSet object in Java. If you try to call the method close on a ResultSet task, it will automatically bring you...Read More

4 Answers

922 views

Which keywords cannot be used for aÂ classÂ which has been declared final?

B. Mary, Health Care manager
Answered: Dec 02, 2019

The correct answer to this question is Abstract. The main part of this sentence that helps one know that it is abstract is the word-final, which indicates it has been completed. When it comes to...Read More

3 Answers

882 views

What is session in JAVA?

G. Cole, English Professor
Answered: Sep 25, 2020

Session in Java simply refers to the time interval or time differences of which two systems (which are the server and the clients) communicate with each other. In other words, we can say a...Read More

2 Answers

848 views

Java Questions and Answers (Q&A)

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