ReadFile.java

/**Reads input file
 *
 * ReadFile Class
 * @author Danny Guan
 * @version 9
 */

import java.io.*;

public class ReadFile {
 private int inputs;
 private int size;
 
 /** ReadFile Constructor.
 * 
 * @param inputs - total number of ticket inputs per customer
 * @param size - total number of customers
 */
 public ReadFile(int inputs, int size){
 this.inputs = inputs;
 this.size = size;
 }
 
 /** Returns the number of customer inputs
 *
 * @return number of inputs
 */
 public int GetInputs(){
 return this.inputs;
 }

 /** Returns the number of customers
 *
 * @return number of customers
 */
 public int GetSize(){
 return this.size;
 }

 /** Sets a new number of customer inputs
 *
 * @param inputs - sets new number of inputs
 */
 public void SetInputs(int inputs){
 this.inputs = inputs;
 }

 /** Sets a new number of customers
 *
 * @param size - sets new number of customers
 */
 public void SetSize(int size){
 this.size = size;
 }
 
 /** Scans the file, customer index is row, customer order info is col
 *
 * @return the correct inputs in a 2d array
	 */
 public String[][] ScanFile(){
 String line;

 ErrorLog log = new ErrorLog();

 String[][] results = new String[1][1];
 
 // Reads the file (values.txt) and stores the entries in an Array
 try{

 BufferedReader in = new BufferedReader(new FileReader("Values.txt"));

 line = in.readLine();

 String correctLine;
 
 try {
 this.size = Integer.parseInt(line);
		 
 if (this.size == 0){
 System.out.println("There are no ticket requests");

 log.OutputLog("No Requests", "", 1);

 System.exit(0);
 }
 } catch (NumberFormatException e) {
 System.out.println("Input error, no inputs");

 System.out.println("Input error on line 1, integer expected, received: " + line);

 log.OutputLog("No inputs", line, 1);

 System.exit(0);
 }

 results = new String [this.size][(this.inputs)];
 
 // Reads the file and stores values in an array
 while (line != null){

 for (int l = 0; l < this.size; l++){

 for (int q = 0; q < this.inputs; q++){

 line = in.readLine();

 if (line == null){
 in.close();
 return results;
 }

 if (q % 3 == 0){

 // Try's to change input from string to int
 try {
 int test = Integer.parseInt(line);
 int lineError = (l * this.inputs) + 2;

 System.out.println("Input error, wrong input type");

 System.out.println("Input error on line: " + lineError + ", email expected, received: " + line);

 log.OutputLog("Wrong Input type", line, lineError);

 System.exit(0);

 // If exception thrown means correct input received
 } catch (NumberFormatException e){

 // input length must be > 3 as the lowest length of an email is 3 characters
 if (line.length() < 3){

 int lineError = (l * this.inputs) + 2;

 System.out.println("Input error, input size");
 
 System.out.println("Input error on line: " + lineError + ", email expected, received: " + line);

 log.OutputLog("Wrong Input size", line, lineError);

 System.exit(0);
 }
 }
 }

 // If the input's correct, the input will be passed through
 correctLine = line;
 results[l][q] = correctLine;
 }
 }
 }

 in.close();

 return results;
 
 // Invalid entry
 } catch (IOException iox){
 System.out.println("Invalid entry");
 }
 return (results);
 }
}