jGuru: Testing the Java Environment with SimpleProgram

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For this exercise you compile and run the first Java application from the course notes, SimpleProgram.java.

There are many different Java development environments, so the exact steps required will be somewhat different across Java IDEs.

Prerequisites

• None.

Skeleton Code

• SimpleProgram.java

Tasks

1. Copy and paste the code for SimpleProgram from the course notes into a file (or use the SimpleProgram.java file above) in a working directory where you will develop programs for this course.
   
   
2. Compile the Java source file SimpleProgram.java.
   
   
3. Execute SimpleProgram.

Where help exists, the task numbers above are linked to the step-by-step help page.

Solution Source

• SimpleProgram.java

Demonstration

If you execute SimpleProgram from a command line, the output should be similar to the following:

C:\>java SimpleProgram
This is a simple program.

If you execute SimpleProgram from a Java IDE, the output should be similar to the following:

That is, there should be a dialog box that displays program output. This window is from VisualAge for Java.

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