Platform-Specific Details: Running the Character-counting Application

UNIX

% java Count
This is a test.
^D
Input has 16 chars.

Use the control-D character (type D while holding down the control key) to indicate to a program reading from the standard input stream that you have finished entering input. The control-D character is often written as ^D.

DOS shell (Windows 95/NT)

C:\> java Count
This is a test.
^Z
Input has 17 chars.

Use the control-Z character (type Z while holding down the control key) to indicate to a program reading from the standard input stream that you have finished entering input. Or you can press the F6 key. The control-Z character is often written as ^Z.

MacOS

First, the Count application brings up a window prompting you for command line arguments. Press the return key to indicate that there aren't any. Next, the Count application brings up a window prompting you to type characters into standard input. Type This is a test. and press the return key. To indicate that you are finished typing, press the return key again.

The program displays the results in a window.

Input has 15 chars.

Note: the program gives different results for each system. On UNIX when you press the return key, you get a single character: \n. On Windows 95/NT when you press the return key, you get two characters: \r\n. And on MacOS, the return key is not passed to the application.