Create a file that has some college department names and enr

Create a file that has some college department names and enrollments. For example, it might look like this:

Aerospace 201

Mechanical 66

Write a script that will read the information from this file and create a new file that has just the first four characters from the department names, followed by the enrollments. The new file will be in this form:

Aero 201

Mech 66

Solution

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

public class Main {

   public static void main(String args[]) throws IOException

   {

       BufferedReader br = readFile();

       BufferedWriter bw = writeFile();

       String line = null;

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

      String [] tokens = line.split(\" \");

      bw.write(tokens[0].substring(0, 4) + \" \" + tokens[1]);

   bw.newLine();

      }

       br.close();

       bw.close();      

   }

   public static BufferedReader readFile() throws FileNotFoundException

   {

       File file = new File(\"collegeIn\");

       return new BufferedReader(new InputStreamReader(new FileInputStream(file)));      

   }

   public static BufferedWriter writeFile() throws FileNotFoundException

   {

       File file = new File(\"collegeOut\");

       return new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file)));

   }

}