I have two Java functions:
/**
* Do something with param
*/
public String doSomething(String param) {...};
/**
* ...
*/
public String doSomething(Integer param) {...};
How can I make the second function's description to show an exact copy of the first function?
Assuming copy and paste won't work for you, I believe the convention is to use the @see tag to refer to another method which will give greater detail.
In your example the doSomething(Integer param) would have an @see tag referring to the String version.
Wikipedia has some examples, http://en.wikipedia.org/wiki/Javadoc
As does the oracle site for the javadoc tool http://www.oracle.com/technetwork/java/javase/documentation/index-137868.html#multiple@see