Write a program called WeatherReporter.java that prompts the user for an input f

Question

Write a program called WeatherReporter.java that prompts the user for an input file name. reads the given file, which is in the format of TexasWeather2010.txt, line by line and uses the processLine() method as defined below:

to output to the console the data for each day formatted as shown below:

Only allowed two use the following import statements:

import java.util.*;

import java.io.*;

TexasWeather2010.txt:

Should be in the format of:

YYYYMMDD Average(F) High(F) Low(F) Fog/Rain/Snow/Hail/Thunder/Tornado
20100101   44.2   48   34   100000
20100102   29.9   48   24.1   000000
20100103   24.2   32   18   000000
20100104   26.2   36   17.1   000000
20100105   26.9   36   17.1   000000
20100106   29.1   41   18   000000
20100107   32.4   48   19   000000
20100108   35.1   48   20.1   010000
20100109   25.9   35.6   19.4   000000
20100110   28   37.4   19.4   000000
20100111   27.6   45   15.1   000000
20100112   34.9   45   16   000000
20100113   31.4   44.6   19.4   000000
20100114   37.5   57.2   24.8   000000
20100115   42.9   63   25.2   000000
20100116   44   63   28.2   000000
20100117   53.6   68   30.2   010000
20100118   50.9   68   39.9   100000
20100119   47.8   66.2   35.6   000000
20100120   51.2   66   35.1   000000
20100121   40.2   64.9   37   010000
20100122   37.9   41   37   010000

...etc.

Explanation / Answer

Here is the complete program:

import java.io.BufferedReader;

import java.io.FileReader;

import java.io.IOException;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Scanner;

public class WeatherReporter {

   public static void processFile(String fileName) {

       try {

           BufferedReader br = new BufferedReader(new FileReader(fileName));

           String line;

           while ((line = br.readLine()) != null) {

               processLine(line);

           }

       } catch (IOException e) {

           e.printStackTrace();

       } catch (ParseException pe) {

           pe.printStackTrace();

       }

   }

   public static void processLine(String line) throws ParseException {

       String[] tokens = line.split("\s+"); // Split by whitespaces [space, tab etc]

               SimpleDateFormat inputFormat = new SimpleDateFormat("yyyymmdd");

               SimpleDateFormat outputFormat = new SimpleDateFormat("mm/dd/yyyy");

               String outputDate = outputFormat.format(inputFormat.parse(tokens[0]));

               String low = tokens[3];

               String high = tokens[2];

               String snow = tokens[4].charAt(2) == '1' ? "yes": "no";

               String rain = tokens[4].charAt(1) == '1' ? "yes": "no";

               StringBuilder output = new StringBuilder();

               output.append(outputDate).append(" ")

               .append("Low: ").append(low).append(" ")

               .append("High: ").append(high).append(" ")

               .append("Rain: ").append(rain).append(" ")

               .append("Snow: ").append(snow);

               System.out.println(output);

   }

   public static void main(String args[]) {

       Scanner sc = new Scanner(System.in);

       System.out.println("Enter the file: ");

       String input = sc.nextLine();

       processFile(input);

   }

}

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