How to exit the program when Ctrl+D is entered in Java?

Question

Below is a section of my Reverse Polish Calculator.

If an integer is entered, push it to the stack and, if = is pressed, peek the result. However, I want to a

Answer 1

Try this:

public static void main(String[] args) {
    try {
        byte[] b = new byte[1024];
        for (int r; (r = System.in.read(b)) != -1;) {
            String buffer = new String(b, 0, r);
            System.out.println("read: " + buffer);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

In this case the loop will stop when you press CTRL+D that is because CTRL+D sends an EOF signal to the System.in InputStream which is -1. That is the case on *nix systems, for Windows system, the EOF signal is sent using the CTRL+Z key combination