What is the meaning of Synchronized

0 votes
Why and when to use Synchronized keyword?
Oct 17, 2018 in Java by Daisy
• 8,120 points
361 views

1 answer to this question.

0 votes

The synchronized keyword is about different threads reading and writing to the same variables, objects and resources. 

synchronized methods enable a simple strategy for preventing thread interference and memory consistency errors: if an object is visible to more than one thread, all reads or writes to that object's variables are done through synchronized methods.

In a very, very small nutshell: When you have two threads that are reading and writing to the same 'resource', say a variable named foo, you need to ensure that these threads access the variable in an atomic way. Without the synchronized keyword, your thread 1 may not see the change thread 2 made to foo, or worse, it may only be half changed. This would not be what you logically expect.

answered Oct 17, 2018 by Parth
• 4,630 points

Related Questions In Java

+2 votes
1 answer

What is the meaning of "this" keyword in Java?

public class MyThisTest { private int ...READ MORE

answered Oct 10, 2018 in Java by Daisy
• 8,120 points
441 views
0 votes
2 answers

What is the meaning of purpose of this command: java -jar <some jar file>.jar ?

JAR (Java Archive) file is a package file ...READ MORE

answered Mar 22, 2019 in Java by Omkar
• 69,190 points
1,363 views
0 votes
0 answers

What is the meaning of "$" sign in JavaScript

A dollar ($) symbol appears in the ...READ MORE

Nov 16, 2022 in Java by Nicholas
• 7,760 points
67 views
0 votes
0 answers

What is the meaning of polyfills in HTML5?

Actually, I have no idea what polyfills ...READ MORE

Dec 7, 2022 in Java by Nicholas
• 7,760 points
47 views
0 votes
1 answer

What is the difference between Runnable and extends Thread

Runnable is the preferred way to create ...READ MORE

answered May 1, 2018 in Java by sharth
• 3,350 points
688 views
0 votes
1 answer

How to kill a thread in Java?

You can use a shared variable as ...READ MORE

answered Jun 6, 2018 in Java by Akrati
• 3,190 points
714 views
0 votes
1 answer

How to stop the Thread in Java?

Use a flag, which will indicate the ...READ MORE

answered Jun 11, 2018 in Java by Parth
• 4,630 points
813 views
+1 vote
1 answer

Multithreading in Java with priorities

HI, @Juan, By default, a thread inherits the priority of its parent thread. ...READ MORE

answered Nov 6, 2020 in Java by Gitika
• 65,890 points
1,365 views
0 votes
2 answers

What is the difference between = and equals()?

The equals() method compares the "value" inside String instances ...READ MORE

answered Aug 13, 2018 in Java by Daisy
• 8,120 points
659 views
0 votes
1 answer

What is the difference between package private, public, protected?

Modifier Class Package Subclass World Public Y Y Y Y Protected Y Y Y N No modifier Y Y N N private Y N N N   Public: Any package, any class accessibility is ...READ MORE

answered May 24, 2018 in Java by Parth
• 4,630 points
1,099 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP