Chapter 1: Hello Java...............................................................................................................................................

The Power of the Concept........................................................................................................................

Network-Awareness...................................................................................................................

Portability....................................................................................................................................

Security........................................................................................................................................

Memory Segmentation.........................................................................................................

Native Methods....................................................................................................................

Access to System Resources via Java..................................................................................

Object Orientation......................................................................................................................

Cooperating Objects...........................................................................................................

Conclusion...................................................................................................................................................

Exercises......................................................................................................................................................

Chapter 2: The Java Language...............................................................................................................................

Files and Packages.....................................................................................................................................

Using the Example Applets......................................................................................................................

Language Basics: A Quick Tour..............................................................................................................

Classes and Methods.................................................................................................................................

Variables and Scope..................................................................................................................

Finality.................................................................................................................................

C++ Compatibility.....................................................................................................................

Control Flow................................................................................................................................................

Simple and Composite Types..................................................................................................................

Types and Initialization............................................................................................................................

Arrays...........................................................................................................................................................

Multi-Dimensional Arrays........................................................................................................

Operators.....................................................................................................................................................

Interfaces.....................................................................................................................................................

C/C++ Incompatibility..............................................................................................................................

Operator Overloading................................................................................................................

Pointers.........................................................................................................................................

Multiple Class Inheritance........................................................................................................

Java Style....................................................................................................................................................

javadoc Class Tags....................................................................................................................

javadoc Method Tags...............................................................................................................

javadoc Variable Tags..............................................................................................................

Conclusion...................................................................................................................................................

Exercises......................................................................................................................................................

Chapter 3: The Example Application....................................................................................................................

Overall Structure.........................................................................................................................................

The AgentLauncher...................................................................................................................................

The AgentServer.........................................................................................................................................

The Agent Network....................................................................................................................

Standalone Applications versus Applets................................................................................

The AgentContext Interface....................................................................................................

The Dispatching AgentServer...................................................................................................

Agents...........................................................................................................................................................

Applet or Application?..............................................................................................................

Configuring An Agent................................................................................................................

How Does An Agent Report Results?.....................................................................................

One Run of an Agent.................................................................................................................

Objects vs. Classes.....................................................................................................................................

Why Java?...................................................................................................................................................

Conclusion...................................................................................................................................................

Exercises......................................................................................................................................................

Chapter 4: The Applet Class....................................................................................................................................

My What Big Applets You Have............................................................................................................

When Does an Applet Run?.....................................................................................................................

A Multi-Applet Environment and the AppletContext.........................................................................

Dealing With Stopped Applets.................................................................................................................

Applets and Hyperlinks.............................................................................................................................

Reloading Applets......................................................................................................................................

Conclusion...................................................................................................................................................

Exercises:.....................................................................................................................................................

Chapter 5: User Interfaces With Awt.....................................................................................................................

The Graphical Hierarchy..........................................................................................................................

Components, Containers and Panels.....................................................................................................

Layouts........................................................................................................................................................

GridBagLayout...........................................................................................................................

Layout in the AgentLauncher..................................................................................................

Getting User Input Via Predefined Controls..........................................................................................

Text Buttons...............................................................................................................................

Image Buttons............................................................................................................................

Dialogs/Forms.............................................................................................................................

Scrolling........................................................................................................................................

Menus...........................................................................................................................................

Other Controls.............................................................................................................................

Flow Control................................................................................................................................................

Events, Actions and Messages...........................................................................................

Drawing and the Graphics Context.........................................................................................................

The update and paint Methods...............................................................................................

The Coordinate System............................................................................................................

Fonts.............................................................................................................................................

Color.............................................................................................................................................

Text Controls..............................................................................................................................

Using Images...............................................................................................................................................

The ImageObserver Interface..................................................................................................

Conclusion...................................................................................................................................................

Exercises......................................................................................................................................................

Chapter 6: Managing Multitasking.........................................................................................................................

What are Threads?.....................................................................................................................................

Creating Threads........................................................................................................................................

The Thread Class.......................................................................................................................

The Runnable Interface............................................................................................................

The Start and Run methods.....................................................................................................

Thread Control...........................................................................................................................

Thread Attributes.......................................................................................................................

When Do Applet Threads Run?...............................................................................................................

Shared Resources and Synchronization................................................................................................

Efficient Serialization................................................................................................................

Subterranean Threads...............................................................................................................................

Inter-Process Communication.................................................................................................................

Inter-Thread Communication.................................................................................................................

Inter-Applet Communication..................................................................................................................

When to Thread..........................................................................................................................................

Animation....................................................................................................................................................

Using Non-Daemon Threads....................................................................................................

Native Methods..........................................................................................................................................

Conclusion...................................................................................................................................................

Exercises......................................................................................................................................................

Chapter 7: Network Communication.....................................................................................................................

URLs.............................................................................................................................................................

Word Searching A URL.............................................................................................................................

Dealing With Content Other Than Simple Text....................................................................................

A Link Checking Applet............................................................................................................................

Using Sockets..............................................................................................................................................

Socket Basics..............................................................................................................................

The Snitch Applet.......................................................................................................................

InetAddress.................................................................................................................................

To Block, or Not To Block.......................................................................................................................

Conclusion...................................................................................................................................................

Exercises......................................................................................................................................................

Chapter 8: Exceptions...............................................................................................................................................

The Exception Class..................................................................................................................................

When to Catch Exceptions.......................................................................................................................

Finally...........................................................................................................................................

Catching Multiple Exceptions..................................................................................................

Scope and Exceptions...............................................................................................................

Catching Interfaces...................................................................................................................

When to Throw Exceptions......................................................................................................................

Catching a Dying Thread..........................................................................................................................

When to Throw Other Objects.................................................................................................................

Unblocking Blocked IO.............................................................................................................

Reusing Threads.........................................................................................................................

Native Exceptions......................................................................................................................................

Conclusion...................................................................................................................................................

Exercises......................................................................................................................................................

Chapter 9: Downloadable Classes..........................................................................................................................

The ClassLoader Class..............................................................................................................................

The Primordial Class Loader....................................................................................................................

Loading Agents...........................................................................................................................................

Conclusion...................................................................................................................................................

Exercises......................................................................................................................................................

Chapter 10: Security In Detail.................................................................................................................................

Why Be Secure?.........................................................................................................................................

Terminal Access.........................................................................................................................

Network Access..........................................................................................................................

Local File Access........................................................................................................................

Security In Applets.....................................................................................................................................

Security In Standalone Applications......................................................................................................

The SecurityManager Class.....................................................................................................................

Conclusion...................................................................................................................................................

Exercises:.....................................................................................................................................................