Fajlovi (22-02-17)

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Scanner;


public class Fajlovi {

    public int x;
    public static int [][]a= {{1,2,3,4,5},{10,20,30},{70,60,50,40}};

    public void writeIO(String fileName)
    {
        File f= new File(fileName);
        try
        {  //povjera nenormalne situacije
            FileWriter fw= new FileWriter(f);
            BufferedWriter bw= new BufferedWriter(fw);  //u buffer se slazu podaci koje zelimo upisati, a zatim se jednim potezom kopira na hardDisk
            for(int i=0;i<a.length;i++)
            {
                for (int x:a[i]) //ide za svako x iz datog skupa
                {
                    bw.write(x+" ");
                }
                bw.newLine();
            }
            bw.close();
        }
        catch (IOException e) {  //hvatanje 'greske' po potrebi
            // TODO Auto-generated catch block
            e.printStackTrace(); //spisak klasa ili/sa greskama
        }
    }

    public void readIO(String fileName) throws IOException
    {
        File f=new File(fileName);
        FileReader fr= new FileReader(f);
        BufferedReader br= new BufferedReader(fr);
        String red= br.readLine();
        while(red!=null)
        {
            System.out.println(red);
            red=br.readLine();
        }
        br.close();
    }

    public void readScanner(String fileName)
    {
        File f=new File(fileName);
        FileReader fr=null;
        Scanner in= null;
        int s=0,x=0;
        try {
            fr = new FileReader(f);
            in = new Scanner(fr);
            while(in.hasNext())
            {
                x=in.nextInt();
                s+=x;
            }
            System.out.println("Suma je "+s);
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        finally
        {
            if(in!=null)
            {
                in.close();
            }
        }

    }

    public void writeNIO(String fileName)
    {
        Path p= Paths.get("C:\\Naziv\\"+fileName);
        try {
            BufferedWriter bw = Files.newBufferedWriter(p);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}