import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class RegexPatternMatch{
    public static void main(String[] args) {
        String str = "Hello, World";

        Matcher matcher = Pattern.compile("(.+?), (.+?)$").matcher(str);
        if (matcher.find()){
            System.out.println(matcher.group(1)); //Hello
            System.out.println(matcher.group(2)); //World
        }
    }
}