There are at the moment, two ways to mark code as depreacted in java.
Via JavaDoc
/**
* @deprecated
*/
Or as an annotation:
@Deprecated
This is my problem - I find it a bit too much to declare both, when marking a method as deprecated when using Eclipse. I really just want to use one of them.
However does using the annotation give the compiler actual useful additional information?
But only using the annotation, I cannot state why the method is deprecated - I can only do that with JavaDoc, and deprecating a method without specying why is bad.
So, can I only use one of them? Or should I really just learn to specify both?
You should use both. The Annotation allows the compiler to display a warning whenever a deprecated method is used, and the javadoc explains why. Both are important.
As per Oracle's Java Annotations tutorial:
When an element is deprecated, it should also be documented using the Javadoc @deprecated tag...