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

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W. Kaye, Ex-Marine
Answered: Oct 12, 2020

A Java method can be defined as the collection of several statements that are usually grouped together in order to perform a given operation when you call out the system out printing method. For...Read More

6 Answers

920 views

What statements are true about a static nested class?

W. Kaye, Ex-Marine
Answered: Oct 12, 2020

A static nested class does not have any access to the non-static members of the enclosing class in order to instantiate it. A static nested class is not tied to an instance of the enclosing...Read More

7 Answers

632 views

Which of the following would compile without error?

John Adney
Answered: Jul 13, 2017

How come it is int a=Math.Abs(-5);

if int a=Math.abs(-5);

int a=Math.abs(5.0);

int c=Math.abs(5.5F);

int d=Math.abs(5L);

2 Answers

513 views

Which of these threads will be the first one to resume?

John Smith
Answered: Jan 07, 2025

C.You can never be sure which thread will get to run first.

1 Answer

424 views

What are the conditions for two classes to have concurrent access problems?

John Smith
Answered: Jan 07, 2025

Public synchronized int read(){return a+b;} b.public synchronized void set(int a, int b){this.a=a;this.b=b;}
Public int read(){synchronized(this){return a+b;}} public void set(int a, int...Read More

1 Answer

410 views

What will be the output of the code snippet below?

L.Steven
Answered: Jan 07, 2018

The output of the above code would be S-1. Java is a very popular computer programming language. It is usually designed to have as less implementations as possible. Usually, java applications are...Read More

2 Answers

409 views

What happen if A extends B?

John Smith
Answered: Jan 07, 2025

A is a class and B is a class
A is an interface and B is an interface

1 Answer

351 views

What happens when comparing two instances of the same class,given that the equals() and hashCode() methods have been properly overridden?

John Smith
Answered: Jan 07, 2025

If the equals()methood returns false,the hashCode() comparison==might return true.
If the hashCode() comparison==returns true,the equals() method might return true
If the hashCode()...Read More

1 Answer

330 views

What is core java?

Mudda Prince
Answered: Aug 19, 2019

Core Java is much more than the programming language itself. Core Java is basically an important platform with numerous sub-topics and ideas. Inside of the Core Java language, there is a modest...Read More

2 Answers

287 views

What are StringBuilder contents?

J. Goodman, Web Content Writer
Answered: Aug 22, 2018

StringBuilder contents are special characters that allow the users to develop the strings to and modify characters according to the need. The chain length can be modified and the content can be...Read More

1 Answer

263 views

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Core Java Questions and Answers (Q&A)

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