Reading from/Writing to File

io.md

Input

Standard Input

  Scanner sc = new Scanner(System.in);
  BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

Input From File

  Scanner sc = new Scanner(new FileReader("file_name"));
  BufferedReader br = new BufferedReader(new FileReader("file_name"));

Output

Standard Output

  PrintWriter out = new PrintWriter(System.out);

Output to File

  PrintWriter out = new PrintWriter(new FileWriter("file_name"));