import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
public class FindGroup 
{
	public static void main(String[] args)
	{
		Matcher m=Pattern.compile("Java")
				.matcher("Java is very easy! I love Java!");
		while(m.find())
		{
			System.out.println(m.group());
		}
		int i=0;
		while(m.find(i))
		{
			System.out.print(m.group()+"\t");
			i++;
		}
	}
}