Regular Expression

[srilavanyaa subramanian]

import java.util.regex.*;
class Regex2 {
public static void main(String[] args) {
Pattern p = Pattern.compile(args[0]);
Matcher m = p.matcher(args[1]);
boolean b = false;
while(b = m.find()) {
System.out.print(m.start() + m.group());
}
}
}
in comman line give
java Regex2 "\d*" ab34ef


the output for this is 01234456
-----------
how the flow wrks.. can anyone explain me... what the group function really do here

[Vinayagar Karpagam]

I guess there are already enough discussions on this question.
Please have a look at these topics.

Topic 1
Topic 2
Topic 3.

For other discussions on this same question, try searching the forum with ab34ef.