RegTest0

import java.util.regex.*;
class RegTest1{
    public static void main(String[] args){
        String expression=args[0],
               source=args[1];
        Pattern p=Pattern.compile(expression);
        Matcher m=p.matcher(source);

        System.out.println("expression:" +m.pattern());
        System.out.println("source:" +expression);
        System.out.println(" index:012345678901234567890" );
        System.out.println("       0         1         2\n" );
        System.out.println("match positions:");
        while(m.find())
            System.out.print(m.start()+" ");
    }
}