user based web-app static vs instance method

Question

I am having servlet in user based web-application on tomcat java. I have a servlet Action class says A. I have also created a custom class says B which have some methods.

My question is : Should i create Staitc method in my custom class or can i call them by instantiating the class . I have explained both scenerio below:

Scenerio First:

Servlet A{

B.methodB() // static method.
}


Scenerio Second:

Servlet A{

B b = new B();
b.methodB() // instance method.
}

Will the scenario first be thread safe in my case ? Does static method always need to be synchronized in user based application ?

Is servlet thread-safe?? First you should learn about the servlet. — Noman ali abbasi, Apr 29 '14 at 06:10
yes servlet is thread safe....every request is a separate thread. — gSingh, Apr 29 '14 at 06:20

score 0 · Answer 1 · answered Apr 05 '21 at 12:13

A web application is always written for users, so it is always user-based. (Or I missed something? )

Scenario First: methodB should be synchronized, but it will create a performance problem as only one thread can access it at a time.

Scenario Second: it will work, but maybe creating an object pool will be better, as objects will not be required to be garbage collected.

user based web-app static vs instance method

1 Answers1