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Understanding Class ForName
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Category : Tutorials » Java Programming
. loading of Java classes at runtime . Exception in thread "main" java.lang.ClassNotFoundException: Echo . jdk1.2.2/docs/api/java/lang/Thread.html .
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Content Summary :
Dynamic loading of Java classes at runtime provides tremendous flexibility in the development ofenterprise systems. It provides for the basis of "application servers", and allows even simpler,lighter-weight systems to accomplish some of the same ends. Within Java, dynamic loading is typicallyachieved by calling the forName method on the class java.lang.Class ; however, when Class.forName is naively called from within an Extension, strange errors can occur. This paper describes why those errors occur, and how Java2 provides two facilities, one a modification to theforName syntax, and the other, called the "Thread context ClassLoader", to avoid them. This paper assumes you are passingly familiar with Java Reflection, and have at least a general idea ofwhat Java ClassLoaders are and how they are used within Java code.
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