How to return to next line of code after calling a public class?

[devdevi@comcast.net]

I am calling a public class DoSomething {...} on an onClick of a button. And I wanted to return to the next line after executing DoSomething class?

...
public void onClick() {
DoSomething() }
nextLineOfCode...
...

DoSomething Class will open another (popup) window with a form page and submit button. If a user clicks the submit button from here it should resume to the nextLineOfCode.

Appreciate your help.

[emceenugget]

I don't know of any situation where you can execute or call a class, just instantiate one (or call its methods). Do you have actual code that compiles and runs?