//Graph.java

package graphs;

import java.io.File;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.stage.Stage;


public class Graphs extends Application {

    @Override public void start(Stage stage) {
        stage.setTitle("Graph App");
        int firstFileCount=0;
        int secondFileCount=0;
        int thirdFileCount=0;
        int firstFileChar=0;
        int secondFileChar=0;
        int thirdFileChar=0;

        final NumberAxis xAxis = new NumberAxis();
        final NumberAxis yAxis = new NumberAxis();
        xAxis.setLabel("Numer lini");
        yAxis.setLabel("Długość lini");
        final LineChart<Number,Number> lineChart =
        new LineChart<Number,Number>(xAxis,yAxis);

        lineChart.setTitle("Wykres zależności długości lini od jej numeru w pliku tekstowym");

        LineCounter firstFile= new LineCounter(new File("C:\\Users\\202166\\Documents\\NetBeansProjects\\Graphs\\plik.txt"));
        firstFileCount=firstFile.readLines();
        firstFileChar=firstFile.readChars();

        LineCounter secondFile= new LineCounter(new File("C:\\Users\\202166\\Documents\\NetBeansProjects\\Graphs\\plik2.txt"));
        secondFileCount=secondFile.readLines();
        secondFileChar=secondFile.readChars();

        LineCounter thirdFile= new LineCounter(new File("C:\\Users\\202166\\Documents\\NetBeansProjects\\Graphs\\plik3.txt"));
        thirdFileCount=thirdFile.readLines();
        thirdFileChar=thirdFile.readLines();


        System.out.println(secondFileCount);

        XYChart.Series series = new XYChart.Series();
        //populating the series with data
        series.getData().add(new XYChart.Data(firstFileChar,firstFileCount));
        series.getData().add(new XYChart.Data(secondFileChar, secondFileCount));
        series.getData().add(new XYChart.Data(thirdFileChar, thirdFileCount));


        Scene scene  = new Scene(lineChart,800,600);
        lineChart.getData().add(series);

        stage.setScene(scene);
        stage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

//LineCounter.java

package graphs;
import java.io.File;
import java.util.Scanner;


public class LineCounter {
    private File file;
    private int lineCount=0;
    private int charCount=0;

    LineCounter(File file){
        this.file=file;
    }

    public int readLines(){
        try
        {
          Scanner myFile = new Scanner(file);
          while (myFile.hasNextLine())
          {
                lineCount++;
                myFile.nextLine();
          }
        }
        catch(Exception e)
        {
          System.out.println("Exception occured");
        }
        return lineCount;
    }
   public int readChars(){
       try{
           Scanner myFile= new Scanner(file);
           int wordsCount=0;
            while(myFile.hasNext()) {
                wordsCount++;
                String word = myFile.next();
                charCount += word.length();
            }
       } catch(Exception e){
           System.out.println("Exception occured");
       }
        return charCount;
    }
}