import java.util.*;
import java.util.regex.*;
import java.lang.*;
import java.io.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		final String text = "This is param-start ?abcdef; param-end";
	    final String patternString = "(['\"]?)\\?.*?;\\1";
	    final Pattern pattern = Pattern.compile(patternString, Pattern.DOTALL);
	    final Matcher matcher = pattern.matcher(text);
	    while (matcher.find()) {
	    	System.out.println("Match found: " + matcher.group());
	    }
	}
}

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