Java Programming Language Handbook: The Ultimate Source for by Anthony Potts, David H., Jr. Friedel

By Anthony Potts, David H., Jr. Friedel

Contains entire reference fabric at the whole Java language, from facts varieties to Java periods. offers special evaluate chapters that designate the artwork of the web and dispensed programming with Java. good points targeted the right way to aid C/C++ programmers grasp Java. comprises designated assurance of interfacing Java with different languages. promises step by step concepts for writing your first Java software. offers recommendations for writing courses utilizing Java sessions.

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Extra resources for Java Programming Language Handbook: The Ultimate Source for Conquering the Java Programming Language

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Let’s step through our applet to better understand how this process works. The TickerTape applet contains a number of functions, which are actually called methods in Java. ) Take a moment to look over the applet and you’ll find methods like init(), paintText(), start(), run(), stop(), and so on. Some of these are standard Java applet methods (they have names and perform operations that are pre-defined); and others are user-defined (we made them up). When the applet runs, the browser running the applet knows which methods are used and in which order to call them.

There are several class packages that come with Java. 2 provides the current set of them. lang package, so you do not have to manually import this package. The Import Statement for C Users Using the import statement to include packages is similar in concept to using the include statement in C to include header files. If you look closely at our import statements in the TickerTape program, you’ll notice that the * character is used. This character tells the Java byte-code compiler to use all the classes stored within the package.

After the two key packages have been included, we define our first class: Writing Your First Java Applet 33 // TickerTape Class public class TickerTape extends Applet implements Runnable { // Declare Variables String inputText; String animSpeedString; Color color = new Color(255, 255, 255); int xpos; ... 3. Let’s take a close look at each section. Class Modifier A class modifier tells the Java compiler how and where a class can be used. The two main types of classes are called public and private.

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