Poj Solution 3332

http://poj.org/problem?id=3332

import java.util.regex.*;import java.util.*;
public class Main { 
     public static void main(String[] args){ 
         String str; 
         int n; 
         Scanner cin = new Scanner(System.in);
          n=cin.nextInt();  
          str=cin.nextLine(); 
         Pattern pattern = Pattern.compile("(\s)*(\+|\-)?(\d)+(\.(\d)+)?((e|E)(\+|\-)?(\d)+)?");
         int i;
          for(i=0;i< n;++i){
              str=cin.nextLine(); 
             Matcher matcher = pattern.matcher(str); 
             if(matcher.matches()){ 
                 System.out.println("LEGAL"); 
             } 
             else{ 
                 System.out.println("ILLEGAL");
              } 
         } 
     }
}