Create.java

package com.birohcek;


import java.io.*;
import java.util.Scanner;

public class Create {

    public static void main(String[] args) {



        File file = new File("1.txt");
        try {
            file.createNewFile();
        } catch (IOException e) {
            e.printStackTrace();
        }



        // checked exception
        try {
            OutputStream fileOutputStream = new FileOutputStream(file);

            char a;

            PrintStream printStream = new PrintStream(fileOutputStream);
            printStream.println("Sevval");
            printStream.flush();
            printStream.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }


    }
}

OutRedirect.java

package com.birohcek;

import java.io.*;
import java.util.Scanner;

public class OutRedirect {

    public static void main(String[] args) throws IOException {

        File file = new File("wtf.txt");

        File sevval = new File("sevval.txt");
        boolean renamed = file.renameTo(sevval);


        System.out.println("Isim degistirme: " + renamed);


//        file.createNewFile();





//
//
//        FileOutputStream stream = new FileOutputStream(file, );
//
//        PrintStream out = new PrintStream(stream);
//        System.setOut(out);
//








//        System.out.println("Ben dosyaya gittim :/");


//        File sevvalKlasor = new File("sevval_klasor");
//
//        sevvalKlasor.mkdir();


        File yiit = new File("yiit.txt");

        FileInputStream fileInputStream = new FileInputStream(yiit);

        Scanner scanner = new Scanner(fileInputStream);

        int next = scanner.nextInt();

        System.out.println(next);


    }
}