How to Create annotations which can declare variable using class name from its usage

Question

following

public class Testclass {

    private static final LogExtension log = new LogExtension(Testclass.class);

}

should work with just:

@LogExtension
public class Testclass{}

similar to @Slf4j with its annotation it creates an object like in all the classes where it is used.

private static final org.slf4j.Logger internalLog = org.slf4j.LoggerFactory.getLogger(LogExtension.class);

any help will be much appreciated.. thanks for reading. couldn't find much on the internet about how to do it.

I'm trying to create a annotation like

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.SOURCE)
@interface LogExt{ 
    LogExtension log() default new LogExtension(); 
}

but how to get the class type as default to create object of LogExtension ? to make it work like :

    private static final LogExtension log = new LogExtension(Testclass.class);

Scenario: I'm trying to have a Logger class that can replace SLF4j as per my problem so it Like I want to create a custom annotation like @LogExtension similar to @slf4j which can execute on compile-time to produce