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No. (If you got this question wrong, or don't even know what it asks, you need to study Chapter Four.)

Simple Java Program

Here is an example Java program. It is about as small as a Java program can be. When it runs, it writes Hello World! on the computer monitor. The details will be explained later.

class Hello
  public static void main ( String[] args )
    System.out.println("Hello World!");

This program can be created using a text editor such as the Notepad editor that comes with Windows. (Details later.) This source program is a text file saved on a hard disk. The file is named Hello.java.

A source program is a text file that contains a program (such as above) written in a programming language. Since it contains ordinary text (stored as bytes) it can not be directly executed (run) by the computer system. As a text file, you can print it, display it on the monitor, or alter it with a text editor.


(Review of Chapter 4:) What are the two ways that a source program can be run on a computer system?