Access Platform
System Properties
  Demo 1
Run Ext. Programs
  Demo 2
Java Comm API
Port Classes
Port Operations
  Demo 3   Demo 4   Demo 5
Serial Port IO
Demo: Serial Port
  Code Listings
    Demo 6
Parallel Port
Port I/O Apps
Exercises

In this chapter we look at techniques for accessing and communicating with the Real world outside the Java Virtual Machine. We look at how to obtain information about the platform, how to run external non-Java programs, and how to setup I/O over the serial and parallel ports.

The sections include:

• Accessing, and modifying resources outside the JVM
• Listing local system resources
  • Demo
• Running non-Java External Programs
  • Demo
• The Java Communications API
• Port Communications Classes
• Operating Port I/O
  • Demo 1 - list ports
  • Demo 2 - test ports
  • Demo 3 - find open ports
• Serial Port I/O
• Serial Port Program - connecting to a device via serial port to read temperature
  • Demo - Serial Port - code listings
• Parallel Port I/O
• Examples of Applications that use Port I/O