Java How to Program, Early Objects, 11th Edition

2.2 Your First Program in Java: Printing a Line of Text

A Java application is a computer program that executes when you use the java command to launch the Java Virtual Machine (JVM). Sections 2.2.1–2.2.2 discuss how to compile and run a Java application. First we consider a simple application that displays a line of text. Figure 2.1 shows the program followed by a box that displays its output.

Fig. 2.1

1   // Fig. 2.1: Welcome1.java
2   // Text-printing program.
3
4   public class Welcome1 {
5      // main method begins execution of Java application
6      public static void main(String[] args) {
7         System.out.println("Welcome to Java Programming!");
8      } // end method main
9   } // end class Welcome1

Welcome to Java Programming!

Text-printing program.

We use line ...