/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		final String functionNameRegex = "^(\\w+(\\s+)?){2,}\\([^!@\\#$+%^]*\\)";
		final String functionString = "public void render(int screenNo, String infoText){}";
 
		final Pattern fnPattern = Pattern.compile(functionNameRegex, Pattern.CASE_INSENSITIVE | Pattern.COMMENTS);
		final Matcher fnMatcher = fnPattern.matcher(functionString);
 
		while (fnMatcher.find()) {
		       System.out.println("Full match: " + fnMatcher.group(0));
		       for (int i = 1; i <= fnMatcher.groupCount(); i++) {
		             System.out.println("Group " + i + ": " + fnMatcher.group(i));
		       }
		}
	}
}

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