myApplets/Beginners/HelloWorld/simpleApplet.class in Java Printing pdf417 2d barcode in Java myApplets/Beginners/HelloWorld/simpleApplet.class

myApplets/Beginners/HelloWorld/simpleApplet.class generate, create pdf-417 2d barcode none on java projects Jasper Reports Then the applet tag in the web page should be <applet c ode = "simpleApplet.class" codebase = "Beginners/HelloWorld/" width = "100" height = "100"> </applet>. The code att Java PDF417 ribute can only include a class le name, not its directory path. So the following tag does not work:. <applet c ode = "basic/demo/simpleApplet.class" *** ERROR *** width = "100" height = "100"> </applet> . The director PDF-417 2d barcode for Java y location of the applet classes can also go above these directories as long as they don t go outside limits imposed by the web server and the browser security manager (security managers are discussed in 14). That is, suppose that the class le is in. Course/Code/ Java/Beginners/HelloWorld/. and the web page le is in Course/Java/01/. Then you can use:. <applet c ode = "simpleApplet.class" codebase = ". .

/. ./Code/Java/Beginners/HelloWorld/" width = "100" height = "100"> </applet>.

5.9 Javadoc Finally, it is possible for the code to reside at a completely different URL address, such as in this example:. <applet c j2ee PDF 417 ode = "HelloWorld.class" codebase = "" width = "100" height = "100"> </applet>.

The applet t ag also accepts JAR les in the codebase. In fact, use of the JAR format is recommended because all the required class les can be obtained in one download operation rather than in several downloads, one for each class le. In addition the JAR format is compressed, further saving download time.

For J2SE 5.0 applets, the highly compressed pack200 format (see Section 5.6.

3) can also be used. Most browsers only support Java version 1.1, so the pack200 format is of little use for those browsers.

However, the Java Plug-in is available for the Java 2 Platform for versions 1.2 and up. The Java Plug-in is a browser plug-in that works with Microsoft Internet Explorer and Mozilla browsers to enable Java 2 support in those browsers.

(See Web Course 1: Supplements and reference [1]). The Java Plug-in has been updated in J2SE 5.0 to support the pack200 format.

. 5.9 Javadoc The javadoc tool provided with the SDK provides for automatic organization of package and class documentation. Applying the tool to a package results in a set of web pages that list the elds and methods of each class. The Javadoc API is quite powerful.

The entire voluminous Java API Speci cation documentation is created with javadoc. You can add comments and other information describing the class in the source les with the use of special tags, and these then appear in the javadoc web pages. We noted in 2 that Java recognizes a block of comments bracketed with /**.

. .*/ in addition to the usual /*.

. .*/.

The double asterisks tell javadoc to include the comments in its documentation output. For example, here is a le commented in the Javadoc style:.

import java. barcode pdf417 for Java applet.Applet; import java.

awt.Graphics; /** This applet tests graphics. * (This comment block that describes a class must be * placed immediately before the class line.

) */ public class HelloWorld extends Applet {. Organizing Java les and other practicalities /** This met jar barcode pdf417 hod paints the text to the screen. * (The comment block that describes a method must be * placed immediately before the method line.) */ public void paint (Graphics g) { g.

drawString ("Hello World!", 50, 25);. Note that th e /**. . .

*/ comments should be placed immediately before the class, method, or variable they are describing. Running javadoc on this le creates several hypertext documentation les such as HelloWorld.html whose contents are shown in the Web Course 5.

Since the output les are in hypertext format, you can also use hypertext tags in the javadoc comments, such as <br> for line breaks and list tags such as <ul><li>abc</li></ul>. Special Javadoc tags that begin with the @ symbol allow you to put speci c information into the documentation output. Examples include @author, @param, @throws, and @return, which specify the author of the class, a description of a method parameter, the exceptions that might be thrown, and a method s return value, respectively.

Over subsequent versions, javadoc has grown increasingly sophisticated and now provides for extensive customization. The doclets API (via the com.sun.

javadoc package) allows for Java classes that can modify the output from javadoc. The taglets API allows for Java classes that create custom tags. See the Javadoc reference [2] for documentation on doclets and taglets.

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