private void read() {
    String path = "/Users/pavel/Desktop/test/target_text.txt";
    try (BufferedInputStream in = new BufferedInputStream(
            new FileInputStream(path))) {

        byte[] bytes = new byte[1024];
        int amountData = in.read(bytes, 0, 1024);


        while (amountData != -1 && amountData == 1024) {
            sb.append(new String(bytes, "UTF8"));
            amountData = in.read(bytes, 0, 1024);
        }

        if (amountData != -1) {
            byte[] residue = new byte[amountData];
            System.arraycopy(bytes, 0, residue, 0, residue.length);
            sb.append(new String(residue, "UTF8"));
        }

        System.out.println(sb);
    } catch (IOException e) {
            e.printStackTrace();
    }
}

int amountData = in.available()%1024;
for(int n=0; n<amountData; n++){
    in.read(bytes, 0, 1024);
}

in.read(bytes, 0, in.available());

String path = "/Users/pavel/Desktop/test/target_text.txt";

    StringBuilder sb = new StringBuilder();
    try (BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(path), Charset.forName("UTF-8")))) {

        String line;

        while ((line = reader.readLine()) != null) {
            sb.append(line + "n");
        }

        System.out.println(sb);
    } catch (IOException e) {
        e.printStackTrace();
    }