can anyone help me understand this line code?

Question

import java.util.*;
public class test {

public static void main(String[] args) {

System.out.println(validate("216.08.094.196"));
System.out.println(validate("08.008.0008.00008"));
System.out.println(validate("01.102.103.104"));
}

public static String validate(String ip) {
//i am not getting reg ex return statement . explain plz.
return ip.replaceAll("(?<=^|\\.)0+(?!\\.|$)","");
}
}

Answer 1

I know that Solomoni Railoa, Ipang, Minho 🇰🇷, A͢J and Jayakrishna🇮🇳 are pretty nifty with java. Perhaps they can help.