Java ClassLoader is a powerful tool that can be used in a various of ways to extend the possibilities of Java applications.
One of the most well-known usages of custom class loaders are Java Applets, where a class loader is used to dynamically download code from the webpage. Customized ClassLoaders are also the base element of Java Application Servers and Web Containers. ClassLoaders are one of things that make the Java platform so extensible and flexible.
Many J2EE application servers have a hot deployment capability, where we can reload an application with a new version of class definition, without bringing the server VM down. Such application servers make use of custom class loaders. Even if we don t use an application server, we can create and use custom class loaders to fine-control class loading mechanisms in our Java applications. So have fun with custom loaders.
One of the most well-known usages of custom class loaders are Java Applets, where a class loader is used to dynamically download code from the webpage. Customized ClassLoaders are also the base element of Java Application Servers and Web Containers. ClassLoaders are one of things that make the Java platform so extensible and flexible.
Many J2EE application servers have a hot deployment capability, where we can reload an application with a new version of class definition, without bringing the server VM down. Such application servers make use of custom class loaders. Even if we don t use an application server, we can create and use custom class loaders to fine-control class loading mechanisms in our Java applications. So have fun with custom loaders.
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