Read e-book online WAP Servlets: Professional Developer's Guide PDF


By John L. Cook III

ISBN-10: 047139307X

ISBN-13: 9780471393078

ISBN-10: 0471437565

ISBN-13: 9780471437567

Prepare for the instant web revolution with this whole advisor to WAP servlets. The instant net is increasing swiftly and will be as sizeable or greater than the stressed out net. The automobile that may bring the instant web is the instant program Protocol (WAP) with the aid of Java servlets. This publication presents builders and programmers with the mandatory details to organize for this instant revolution. It comprises in-depth insurance on javax servlets, WML servlets, and configurations of improvement environments. builders will comprehend the reason for constructing servlets for WAP browsers, easy methods to enhance servlets utilizing the Java category, and an outline of the entire beneficial properties to be had in WML. for extra perception, real-world code examples are built-in during the booklet in addition. The CD-ROM comprises the JSDK, Phone.Com's SDK, Nokia's SDK, and different precious public area software program.

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Example text

When the value of the method attribute is get, the element appears as an HTTP get request. In a get request, the parameters of a request are appended to the query string of the URL. When the value of the method attribute is post, the element appears as an HTTP post request. In a post request, the parameters of a request are sent as content in the HTTP request. 33a shows an example of the method attribute. 33a Example of the method attribute of the element. 33b Screen shot progression for the method example.

NOTEWhile all WAP browsers must implement one soft function key, there is no requirement for a second soft function key. Most browsers have two or more soft function keys. On some browsers, the options key is implemented on the primary soft key. If two or more elements (other than type prev) are defined, they are placed in a dynamic menu associated with the primary key (labeled options). TIP Because some browsers implement the options key as a menu pick under a soft key called label, you should allow the browser to label the option type element.

On card1, a element is used to associate the accept key with card2. 30b shows a screen shot progression associated with the example. The first panel shows the output generated by card1. When the accept key is pressed on card1, control is forwarded to card2. As shown in panel two, the output of card2 shows the value of the variable $(var) as established by the element. Tasks Four elements fall under the general heading of tasks: , , , and . Readers will recall that these four elements are used as content within the and elements.

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WAP Servlets: Professional Developer's Guide by John L. Cook III

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