File Reader Mencari vol Balok

import java.io.*; class filereader_volumebalok1 { public static void main(String[]args){ String s; int P,L,T,volume; try { FileReader fr = new FileReader("D://coba.txt")//taruh file di direcktory yang benar dan isikan angka angka; BufferedReader br = new BufferedReader(fr); s=br.readLine(); P=Integer.parseInt(s.substring(2,4)); L=Integer.parseInt(s.substring(3,5)); T=Integer.parseInt(s.substring(8,10)); volume=P*L*T; System.out.println("Panjang "+P +"Lebar "+L +"Tinggi "+T+" maka luas="+volume+"\n"); } catch(Exception e){ System.out.println("wuih >>"+e.getMessage()); } } }