Is there someone here can give me idea or informations on how to create a functions definition, same to what we got when we write the signature of a function and than we press ctrl + space, in other world, like this :
File file = new File ( and when we pressed ctrl+space we got as showing in the picture bellow) 
I googled a lot but i didn't found any solutions, thanks if someone here can help me.
Read about the Javadoc.
Look the File class source for an example:
/** * Creates a new <code>File</code> instance by converting the given * pathname string into an abstract pathname. If the given string is * the empty string, then the result is the empty abstract pathname. * * @param pathname A pathname string * @throws NullPointerException * If the <code>pathname</code> argument is <code>null</code> */ 
