The Nuts and Bolts of the Java Language

Other Features of the Character-Counting Application

Here, to remind you, is the character-counting program in its entirety:

class Count {
    public static void main(String[] args)
        throws java.io.IOException
    {
        int count = 0;

        while (System.in.read() != -1)
            count++;
        System.out.println("Input has " + count + " chars.");
    }
}

The parts shown in bold are features of the Java language or the Java environment that have not yet been explained in this lesson. See the following pages for a brief introduction to the concepts highlighted in the code sample. Each page will direct you to the appropriate lesson within the tutorial that discusses each topic in more detail.

• The main() Method
• Introducing Exceptions
• The Standard Input and Output Streams

The Nuts and Bolts of the Java Language