Is synchronized keyword necessary, in Java, if everything that is modified in a function is local to that function?

Asked by Last Modified  

6 Answers

Learn Java

Follow 2
Answer

Please enter your answer

Technology Promoter

No, it is not required if you make sure whatever parameters are updated/modified will be done as atomic references/operations. Atomicity is an alternative to syncronizatiom.
Comments
Dislike Bookmark

In some cases It will be necessary. If you want to develop a thread-safe application then definitely you will have to use synchronized keyword.
Comments
Dislike Bookmark

Trainer

Not necessaring, if sharing is not there then synchronization is not required
Comments
Dislike Bookmark

If the function only works with local variables, then synchronized is not required. For example, a simple function for addition - "int add(int a, int b)", which takes two integers as parameter and returns summation of them, is not required to be synchronized. But if the function works on some class level...
read more
If the function only works with local variables, then synchronized is not required. For example, a simple function for addition - "int add(int a, int b)", which takes two integers as parameter and returns summation of them, is not required to be synchronized. But if the function works on some class level properties, global/static variables, or makes some calls to database system, or some I/O operation, then it may be required to make it synchronized to make the program thread safe. read less
Comments
Dislike Bookmark

Trainer

No, not necessary
Comments
Dislike Bookmark

The synchronized keyword is used in two primary contexts: as a method modifier to mark a method that it can only be executed by one thread at a time. by declaring a code block as a critical section – one that’s only available to a single thread at any given point in time
read more
The synchronized keyword is used in two primary contexts: as a method modifier to mark a method that it can only be executed by one thread at a time. by declaring a code block as a critical section – one that’s only available to a single thread at any given point in time read less
Comments
Dislike Bookmark

View 4 more Answers

Related Questions

simple way to explane the servlet in java
Servlet is a program wich executed in server and assists in responding to client queries..... Usually confidential tasks are done by using servlets or other server side codes
Anish
What's New in JDK 8 ?
1.Lamda Expressions I started with lambda expressions as this is probably the most sought after feature in the language after probably Generics/Annotations in Java 5. 2.Generic Type changes and improvements Taking...
Ashish
If you want to Learn Technology of JAVA & .NET, It's better to start from the very beginning, 1. C 2. C++ 3. Data Structure 4. Core JAVA / VB.Net 5. Advance JAVA / Asp.Net "It's better to clear all the stages to achieve the Technology you want to Learn." Thanks & Regards, Prof. Jimmy Thakkar
yes you are right...... always build your building from base....so that you will be master
Jimmy
What is a singleton class and when do you use it?
Singleton class have a private constructor. while we can't create an object from outside of class, we can create an object only once.
Prakash
Hi, We provide online instructor-led training. I am looking for Java Teacher/Instructor who can teach java via online. If anyone interested then contact me. I have to start the class from tomorrow onwards.
Hi, If you haven't finalised yet, I am interested in being an instructor. I will be teaching the newest version of Java, Java 10. Experience - 3 yrs as Software Engineer, BTech CSE, teaching Java to school and college students since 3 yrs.
Ujjwal Rana

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Class and Objects in Java
Class is a template or a blueprint which is used to describe an object. On other hand Object is a reference of a class which follows all the stuff written inside the class. How about taking the whole tour in the following video

Kalyani Jawade

1 0
0
Introduction to Course Content
Video about what we are going to learn throughout the Java Training Session .

Jtcindia Java Training Center

0 0
0
Java Hash Map internal implementation
1.Hash Map internal implementation: In hash map it will create an array of table (to store the {Key,Value} pair) which is of type java.util.HashMap.EntryThe Entry object contains {hash, key, next, value}...
R

Ravi Kumar

0 0
0
Class, Object and Methods in JAVA
Lesson-1: Class, Object and Methods of Java can be compared with body, heart and brain. Without these 3 things, Java does not exist. If you Google the above 3 items, you will find many definitions. But...

Debabrata Mandal

0 0
0
Understanding concept of Inheritance in Java
Inheritance: Acquiring a properties and methods from Parent class to Child class. For example, In some cases we can hear from any one of your relative or your friends will say like that "You are bahaving...

Uday Ch

0 0
0

Recommended Articles

Java: An Object-Oriented Language

Java is the most commonly used popular programming language for the creation of web applications and platform today. Integrated Cloud Applications and Platform Services Oracle says, “Java developers worldwide has over 9 million and runs approximately 3 billion mobile phones”.  Right from its first implication as java 1.0...

Read full article >

Why Java is the Most Popular Programming Language

Designed in a flexible and user-friendly demeanor, Java is the most commonly used programming language for the creation of web applications and platform. It allows developers to “write once, run anywhere” (WORA). It is general-purpose, a high-level programming language developed by Sun Microsystem. Initially known as an...

Read full article >

Some Popular IT Courses in Current Market

In the domain of Information Technology, there is always a lot to learn and implement. However, some technologies have a relatively higher demand than the rest of the others. So here are some popular IT courses for the present and upcoming future: Cloud Computing Cloud Computing is a computing technique which is used...

Read full article >

Why Should You Learn Java !

Java is the most famous programming language till date. 20 years is a big time for any programming language to survive and gain strength. Java has been proved to be one of the most reliable programming languages for networked computers. source:techcentral.com Java was developed to pertain over the Internet. Over...

Read full article >

Find Oracle Java Certification near you
Oracle Java Certification in Bangalore
Oracle Java Certification in Hyderabad
Oracle Java Certification in Pune
Oracle Java Certification in Chennai
Oracle Java Certification in Delhi
Oracle Java Certification in Mumbai
Oracle Java Certification in Kolkata
Oracle Java Certification in Noida
Oracle Java Certification in Gurgaon
Oracle Java Certification in Ghaziabad
Online Java Training

Looking for Java Training Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you