import java.io.*; import java.util.*; public class SecondsCalculator { private static BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in)); private static PrintWriter stdErr = new PrintWriter(System.err, true); private static PrintWriter stdOut = new PrintWriter(System.out, true); public static void main(String[] args) throws IOException { int myHour= 0, myMin= 0, mySec = 0; boolean justice = false; do { stdOut.print("time [hours:minutes:seconds]>"); stdOut.flush(); String myTime = stdIn.readLine(); StringTokenizer tknzr = new StringTokenizer(myTime, ":"); int num = tknzr.countTokens(); if(num != 3) { stdErr.print("Invalid input"); stdErr.flush(); stdErr.println(); continue; } else { myHour = Integer.parseInt(tknzr.nextToken()); myMin = Integer.parseInt(tknzr.nextToken()); mySec = Integer.parseInt(tknzr.nextToken()); if(myHour > -1 && myHour -1 && myMin -1 && mySec <60) justice = true; else { stdErr.println("Invalid input"); } } } while(!justice); stdOut.println("The number of seconds is: " + (myHour * 3600 + myMin * 60 + mySec)); } }