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Comments and embedded documentation

Comments and embedded documentation There are two types of comments in Java. The first is the traditional C-style comment that was inherited by C++. These comments begin with a /* and continue, possibly across many lines, until a */. Note that
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Logical operators

Logical operators The logical operators AND (&&), OR (||) and NOT (!) produce a boolean value of true or false based on the logical relationship of its arguments. This example uses the relational and logical operators: //: Bool.ja
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Your first Java program

Your first Java program Finally, here’s the program.[1] It prints out information about the system that it’s running on using various methods of the System object from the Java standard library. Note that an additional style of comment is intro
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Seam Contexts

Seam Contexts As you may recall, in Chapter  5 I talked  about contexts.  There  are seven of them, and I gave a brief description   of what  they are and how they are used.  To review, the contexts are as follows:
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Business Process in Seam

Business Process in Seam Business process management tools  are used  by businesses   to increase  their  speed and efficiency  in the workplace.  The basic  purpose of business   process tools  is to cre- ate a w
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Auto increment and decrement

Auto increment and decrement Java, like C, is full of shortcuts. Shortcuts can make code much easier to type, and either easier or harder to read. Two of the nicer shortcuts are the increment and decrement operators (often referred to as t
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Web Applications

Web Applications Chapter 1 outlined  the concepts   of MVC and gave a brief discussion   of web frameworks. The main  reason  for that discussion   was to help you understand any major  web frame- work that has come  o
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Windowing Components And Layout Classes


Windowing Components And Layout Classes Building a graphical user interface for an application is an interesting and challenging task. Every graphical user interface requires components that perform specialized tasks, such as buttons that invok
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AWT Peer Interfaces

AWT Peer Interfaces This chapter introduces the concepts behind the peer interfaces of the Java Abstract Windowing Toolkit (AWT). As a Java application developer you will never need to use any of the peer classes. The interfaces described in th
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Applets And Graphics


Applets And Graphics Packaging interactive content in small, easily distributed objects was a design feature that had high priority to the developers of Java. To meet this design goal, they created the Applet class, along with several objects a
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Color, Font, Images, And Shapes


Color, Font, Images, And Shapes The Java API includes several classes designed to make Graphics rendering operations easier. Classes exist to represent colors, fonts, shapes, and images. Instances of these classes are passed, as parameters, to
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Handling URLs And Networking Exceptions

Handling URLs And Networking Exceptions If you are developing Java applications for the World Wide Web, this chapter will help you start writing Java applets that will navigate the Web. It introduces you to some of the basic concepts of the Wor
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Handling Text, Dialogs, And Lists

Handling Text, Dialogs, And Lists An application might need input not only at the beginning of execution but at various stages of a run. The input may not be from a known list of inputs or even if it is, the number of items might be large. It m
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AWT Image Processing

AWT Image Processing Several utility classes and interfaces are included in the Java API for image processing. Using these APIs, Image objects can be created from raw data, the raw data of an existing Image object can be examined, and filters c
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Choice, Menus, And Checkboxes


Choice, Menus, And Checkboxes The objective of any user-interface is to make it easy for users to provide the input values that an application needs. Your goal is to provide the best possible combination of available functionality to make the i
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Date And Advanced Classes


Date And Advanced Classes Chapter 12 described the utility classes for data structures and random number generation. In this chapter, you will learn more about the other utility classes provided in the JDK environment. We’ll discuss the class t
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Data Structures And Random Number Generation


Data Structures And Random Number Generation Java’s utility classes provide a wide range of functionality for your applications. This chapter explains the utility classes for implementing data structures and random number generation. These clas
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Network And Sockets


Network And Sockets A computer network is a communication system for connecting two or more hosts. Hosts can be anything from microcomputers to super-computers, which makes establishing communication among them an involved task for programmers.
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The Component Class

The Component Class All visual elements of a graphical interface have functionalities in common. Top-level windows, visual controls such as text boxes and push buttons, as well as simple elements for drawing images on the screen have a commonal
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Toolkit, Window, Container, And Events


Toolkit, Window, Container, And Events One of the challenges of designing Java was to make a programming system that was compatible across different operating systems. Making a system that is also compatible across the various windowing platfor
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