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Release It! by Michael T. Nygard

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Antipattern9.2 Excessive JSP Fragments

In the Java realm, JSP is the standard page-templating language. JSP files are compiled in two passes. First, the application server generates a java file with application server--specific servlet code. Second, the application server compiles that source file into bytecode. After the second compilation step, the new class file is loaded into the JVM. Like all Java classes, compiled JSPs are loaded into the JVMs permanent generation. The permanent generation is exactly what it says. The objects in the permanent generation are the actual class and method definitions.

J2EE application servers almost always come with ...

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