CS Review: Input/Output

There are a few basic types of input/output sources that are usually used.

Buffered File In:

1. 1. String file = “file.txt”;
   2. FileReader fReader = new FileReader(file);
   3. BufferedReader bReader= new BufferedReader(fReader);
   4. String s = bReader.readLine();
   5. bReader.close();

Buffered File Out:

1. 1. String fileOut = “fileOut.txt”);
   2. FileWriter fWrite = new FileWriter(fileOut);
   3. BufferedWriter bWrite = new BufferedWriter(fWrite);
   4. bWrite.write(“Anything”, offset, length);
   5. bWrite.close();

Standard In (Usually a Keyboard):

1. 1.  InputStreamReader cin = new InputStreamReader(Sytem.in);
   2.  char c = (char) cin.read();

Standard Out (Console):

1. 1. System.out.print(“System.out is already setup”);

Scanners:

1. Scanner in = new Scanner(System.in);
2. int i = in.nextInt();