UNISYSTEM PART2

package unisystem;

import java.io.FileInputStream;

import java.io.LineNumberInputStream;


@SuppressWarnings("deprecation")
public class DateiEinlesen {

    private int bufferSize = 15;
    private String filePath = "/Users/K.T.F/eclipse-workspace/unisystem/src/unisystem/Ergebnis";
    private byte buffer[] = new byte[bufferSize];
    private FileInputStream fis;
    private LineNumberInputStream lnis;

    // Constructor calls setInputStreams() to initialize input streams.
    public DateiEinlesen()
    {
        setInputStreams();
        readData();
    }

    /**
     * This method Initializes the input streams.
     */
    public void setInputStreams()
    {
        try {
            fis = new FileInputStream(filePath);
            lnis = new LineNumberInputStream(fis);
        } catch(Exception e){
            System.out.println("Error! Problem initializing input streams in method setInputStreams().");
        }
    }

    /**
     * This method calculates the number of lines in the file.
     */
    public int readNumberOfLines()
    {
        int lineNumber = 0;

        /**
         * We'll iterate through each byte in the file and determine the current
         * line number at every point and when a new line number is encountered we'll
         * update lineNumber.
         */
        try {
                while(lnis.read()!= -1)
                {
                    if(lnis.getLineNumber() != lineNumber)
                    {
                        lineNumber = lnis.getLineNumber();
                    }
                }
        } catch (Exception e) {
            System.out.println("Error! Can\'t read data from file in method readNumberOfLines().");
        }

        return lineNumber;
    }

    /**
     * This method reads the next data stream from the file.
     * Uses ';' as the delimiter.
     */
    public String readData()
    {
        int readByte;
        String data;

        try {
                int iterator = 0;

                while ((readByte = lnis.read()) != -1)
                {
                    if(lnis.getLineNumber() == 0)
                    {
                        continue;
                    }
                    else if ((char)readByte != ';' && readByte != 10)
                    {
                        buffer[iterator] = (byte)readByte;
                    } else {
                        break;
                    }

                    iterator++;
                }
        } catch (Exception e) {
            System.out.println("Error! Can\'t read data from file in method readData()."+e);
        }

        data = new String(buffer);

        clearBuffer();

        return data;
    }

    public double[] readgesamtPunkte()
    {
        double gesamtPunkte[] = new double[9];

        for (int i = 0; i < 9; i++)
        {
            gesamtPunkte[i] = Double.parseDouble(readData());
        }

        return gesamtPunkte;
    }

    public void clearBuffer()
    {
        buffer = new byte[bufferSize];
    }



}