Greedy quantifiers(*)

[K Raj Kumar]

Hi Ranchers!

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());
    }
 }
}

java Regex2 "\d*" ab34ef

Output:01234456

I am unable to interpret the last part of the output esp at"456".
So,please help me in understanding it.

Source:SCJP 6 study java guide, Kathy sierra and Bert bates, Self Test,Page 515.

Thanks in advance!

[Punit Singh]

  import java.util.regex.*;
public class Regex2{
public static void main(String [] args){
 Pattern p = Pattern.compile("\\d*");
 Matcher m= p.matcher("ab34ef");
 boolean b= false;
  while(b=m.find())
   {
    System.out.print("index is: "+m.start());
    System.out.print(" Group is: "+m.group());
    System.out.println();
    }
 }
}  

Run this and try to understand it is very simple.

[Ankit Garg]

This question is answered comprehensively in FAQ. The link is in my signature...