updated README

Java/Strings/Java Regex/Solution.java

@@ -1,15 +1,9 @@
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-import java.util.Scanner;
-
-class Solution{
-
-    public static void main(String []args){
-        Scanner in = new Scanner(System.in);
-        while(in.hasNext()){
-            String IP = in.next();
-            System.out.println(IP.matches(new MyRegex().pattern));
-        }
-
-    }
+/*
+     [01]?\\d{1,2}   matches numbers 0-199.
+     2[0-4]\\d       matches numbers 200-249
+     25[0-5]         matches numbers 250-255
+*/
+class MyRegex {
+    String num = "([01]?\\d{1,2}|2[0-4]\\d|25[0-5])";
+    String pattern = num + "." +  num + "." +  num + "." + num;
 }