2.2. A First Program in Java: Printing a Line of Text
Every time you use a computer, you execute various applications that perform tasks for you. For example, your e-mail application helps you send and receive e-mail, and your web browser lets you view web pages from websites around the world. Computer programmers create such applications by writing computer programs.
A Java application is a computer program that executes when you use the java command to launch the Java Virtual Machine (JVM). Let us consider a simple application that displays a line of text. (Later in this section we will discuss how to compile and run an application.) The program and its output are shown in Fig. 2.1. The output appears in the light blue box at the end of the ...
Get Java™ How to Program, Seventh Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
