Running a thread in java What is the could Yasser Ibrahim @Jobilize

Author: Yasser Ibrahim

Exam Permalink:

https://www.jobilize.com/java-certification-questions

Question Permalink:

https://www.jobilize.com/running-a-thread-in-java

Question 180 / 297: What is the could be the output of compiling and running the following code?
Choose 2

public class Test extends Thread {
	static int count = 0;

	public static void main(String argv[]) throws InterruptedException {
		Test t = new Test ();
		t.increment(count);
		t.start();
		Thread.sleep(1000);
		System.out.println(count);
	}

	public void increment(int count) {
		++count;
	}

	public void run() {
		count = count + 5;
	}
}

Compilation error

An InterruptedException may be thrown

<< First < Previous Next > Last >>

Explanation:

The trick is that inside method increment(), what is incremented is not the static member count, rather the method-argument count, so the static member count stays 0 and then inside run incremented by 5 and prints 5 to the screen, unless Thread.sleep(1000) throws an InterruptedException and this is possible too.

Exam Home Page

https://www.jobilize.com/java-certification-questions

Oracle Certified Professional Java Programmer

Author:

JavaChamp TeamSenior Java Developer

QuizOver.com

Germany

Access: Public Instant Grading

Yasser IbrahimFounder

Jobilize.com

U.A.E.

Ask

	2 SCEA Java Architect By JavaChamp Team Start Exam
©flickr: Abraham	1 Biology 1 By Sarah Warren Start Test
	Unit 1 Geography Test By Qqq Qqq Start Flashcards
	38 Biology 38 The Musculoskeletal System MCQ By OpenStax Start Quiz
	15 Biology 15 Genes and Proteins MCQ By OpenStax Start Quiz
	7 Arts Society: Theater 7 By Jonathan Long Start Quiz
	2 Neuroanatomy 02 Brain External Features By Stephen Voron Start Quiz
	Microeconomics Test 1 By IES Portal Start Test
	2 Physiotherapy Flashcards Set 2 By Rhodes Start Flashcards
©flickr:	Morphology By Jugnu Khan Start Quiz
	6 BOD Respiratory Exam By Brooke Delaney Start Exam

Copy and paste the following HTML code into your website or blog.

Recipient name: *
Recipient email: *