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The parameters for compiling Servlets can vary between Servlet engines depending on what libraries are required and where the class files need to be compiled. The following example is provided to get you started. However, you may need to modify it for your particular Servlet engine. The %target% parameter is an environment variable pointing to the location where the Servlet class needs to be compiled for the Servlet engine to find it.

java.awt.Image awtImage = Toolkit.getDefaultToolkit().createImage(RESOURCE); Image img = Image.getInstance(writer, awtImage, quality); img.setAbsolutePosition(15, 15); document.add(img);

IntVector An IntVector is a simple expandable vector containing integers. Unlike standard Java vectors (java.util.Vector) in J2SE or other Java environments, these vectors contain the base type integer elements and not objects (java.lang.Object). Unfortunately, there are no enumerators or iterators that can be obtained directly from instances of this class, so there is no convenient means to loop through the integers contained in an IntVector. Adding integers to the IntVector is accomplished with the append(int i) method while getting an integer out of the vector is done by calling on the valueAt(int index) method. The size() method provides a count of the number of integers stored in the vector. List The List class is a smaller and simplified version of the java.util.Vector class. Objects can be added to a List collection using the append(java.lang.Object obj) or setElementAt(java.lang.Object o, int pos) methods. Objects are extracted from a List instance using elementAt(int index). Again, the size() method returns the number of elements in a List instance.

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For the quality parameter, you can pass a float varying from 0.0 to 1.0. Note that if you added the PNG as is, without using.java.awt.Image, the file size of the resulting PDF would have been 17 KB, which is almost half of the file size with the JPEG at 100 percent. If you really want to compress an image, you ll have to fine-tune your application to make sure you don t end up with unexpected results. As an alternative to using this limited functionality to compress images, you may want to use the Java Advanced Imaging (JAI) library or java.awt.Image to preprocess images. You can use standard Java transformations to reduce the size of the image, or even to change the appearance of the image before adding it to a document using iText. Although this is outside the scope of a book about iText, you ll use this technique in chapter 16 to reduce the resolution of an image in an existing document.

Table 10.1 showed that TIFF, JBIG2, and GIF files can contain more than one image. But when you added these files to obtain figure 10.5, only one image was added. Let s find out how to retrieve the other images in the file (if there are any).

Time now to put the KJava user interface API to use. We are going to build the user interface of the investment tracking tutorial application using KJava and CLDC. When developing the user interface for MIDP devices, as was seen in chapter 5, the screen was so small that several screens had to be implemented in order to interact with the customer and display the investment quote prices. The screen size of a Palm OS device is huge in comparison to the 96 54 pixel limit on MIDP devices. Therefore, we can actually have the entire user interface displayed on a single screen, as opposed to several screens with MIDP. As with our MIDP implementation, we will have two separate applications. One application, the ObtainQuoteSpotlet, will obtain an investment symbol from a customer and wirelessly seek the price of the investment represented by the symbol entered by the customer. This price will then be stored to a database and displayed to the customer. A second application, RetrieveQuoteSpotlet, will retrieve historical prices for a given investment symbol from the database and graphically display the historical prices for the investment to the customer.

scan or fax a document, it can contain multiple pages. The next listing shows how you can use the TiffImage and JBIG2Image objects to get the number of pages in the image file B, and how to get an Image instance C that can be added to a Document.

Creating and displaying components The first step in building our UI in KJava will be to import the required classes. All of the KJava user interface components are located in the com.sun.kjava package. In fact, all of the classes of KJava are located in this single package. Therefore, at the top of the ObtainQuoteSpotlet.java file, we have the required import statement

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