I am having this particular requirement where a method has to be identified by different regular expressions for different components. For example, there need to be a regex for return parameter, one for method name, one for argument type and one for argument name. I was able to come up with an expression till this step as follows -

([^,]+) ([^,]+)\((([^,]+) ([^,]+))\)

It works well for a method signature like -

ReturnType foo(Arg parameter) The regular expression identifies ReturnType, foo, Arg and parameter separately.

Now the problem is that a method can have no/one/multiple arguments separated by commas. I am not able to get a repeating expression for this. Help will be appreciated.