Writing a java annotation for timing method call

Question

I want to write a java annotation which times the method call. something like this:

@TimeIt
public int someMethod() { ... }

and when this m

Answer 1

As of 2016, there's a nifty aspect annotation library jcabi-aspects.

From the docs:

Annotate your methods with @Loggable annotation and every time they are called, your SLF4J logging facility will receive a message with the details of execution and the total execution time:

public class Resource {
  @Loggable(Loggable.DEBUG)
  public String load(URL url) {
    return url.openConnection().getContent();
  }
}

Something like this will appear in the log:

[DEBUG] #load('http://www.google.com'): returned "

Read more about @Loggable here.