Summary: A First Look at Java
In this lesson, we will summarize the main ideas presented in this chapter.
We'll cover the following...
- An identifier is a word composed of letters, digits, the underscore (
_), and/or the dollar sign ($). It cannot begin with a digit. An uppercase letter is distinct from its lowercase counterpart. - A reserved word is an identifier that has a special meaning in Java.
- We use a Java statement of the form
System.out.println(. . .)to display text. The text is placed between the parentheses and enclosed in double quotes. Such text is