secondscalculator.java

GourmetCoffeeSystem在学校管理方面的应用

import java.io.*;
import java.util.StringTokenizer;

public class SecondsCalculator
{

    public SecondsCalculator()
    {
    }

    public static void main(String args[])
        throws IOException
    {
Object stringtokenizer;
_L1:
         
        do
        {
label0:
            {
                stdErr.print("time [hours:minutes:seconds]> ");
                stdErr.flush();
                stringtokenizer = new StringTokenizer(stdIn.readLine(), ":");
                if(((StringTokenizer) stringtokenizer).countTokens() == 3)
                    break label0;
                stdErr.println("Invalid input");
            }
        } while(true);
        int i;
        int j;
        int k;
        i = Integer.parseInt(((StringTokenizer) stringtokenizer).nextToken());
        j = Integer.parseInt(((StringTokenizer) stringtokenizer).nextToken());
        k = Integer.parseInt(((StringTokenizer) stringtokenizer).nextToken());
        if(0 > i || 24 <= i || 0 > j || 60 <= j || 0 > k || 60 <= j)
        {
            try
            {
                stdErr.println("Invalid input");
            }
            catch(NumberFormatException numberformatexception)
            {
                stdErr.println(numberformatexception);
            }
        } else
        {
            stdOut.println((new StringBuilder()).append("The number of seconds is: ").append(i * 3600 + j * 60 + k).toString());
            return;
        }
          goto _L1
    }

    private static BufferedReader stdIn;
    private static PrintWriter stdOut;
    private static PrintWriter stdErr;

    static 
    {
        stdIn = new BufferedReader(new InputStreamReader(System.in));
        stdOut = new PrintWriter(System.out, true);
        stdErr = new PrintWriter(System.err, true);
    }
}