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package javaapplication1;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author richard
 */
public class JavaApplication1 {

    /**
     * @param args the command line arguments
     */

        private static String readFileAsString(String filePath) throws java.io.IOException{
            byte[] buffer = new byte[(int) new File(filePath).length()];
            FileInputStream f = new FileInputStream(filePath);
            f.read(buffer);
            return new String(buffer);
        }

    public static void main(String[] args) {
        try {
            // TODO code application logic here
            String file = readFileAsString("C:\\Test.txt");
            String[] arr = file.split("#");

            int i = 0;
            for(String zeile:arr){
                i++;
                System.out.printf("Zeile %d: %s\n",i,zeile);
            }

            //Zufällige Zeile bestimmen
            int zeile = (int)((arr.length)*Math.random());
            System.out.printf("\n\nZufällige Zeile Nummer: %d\n%s",zeile,arr[zeile]);

            String deineZeile = arr[zeile];
            char[] zeichen = deineZeile.toCharArray();

            int tauschA = (int)((zeichen.length)*Math.random());
            int tauschB = (int)((zeichen.length)*Math.random());

            char buff = zeichen[tauschA];
            zeichen[tauschA] = zeichen[tauschB];
            zeichen[tauschB] = buff;
            System.out.printf("\n\nVertausche Zeichen %d mit Zeichen %d: \n%s",tauschA,tauschB, new String(zeichen));
        } catch (IOException ex) {
            Logger.getLogger(JavaApplication1.class.getName()).log(Level.SEVERE, null, ex);
        }

    }
}