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- package sample.evolve;
-
- import javassist.*;
-
- /**
- * DemoLoader is a class loader for running a program including
- * an updatable class. This simple loader allows only a single
- * class to be updatable. (Extending it for supporting multiple
- * updatable classes is easy.)
- *
- * To run, type as follows:
- *
- * % java sample.evolve.DemoLoader <port number>
- *
- * Then DemoLoader launches sample.evolve.DemoServer with <port number>.
- * It also translates sample.evolve.WebPage, which sample.evolve.DemoServer
- * uses, so that it is an updable class.
- *
- * Note: JDK 1.2 or later only.
- */
- public class DemoLoader {
- private static final int initialVersion = 0;
- private String updatableClassName = null;
- private CtClass updatableClass = null;
-
- /* Creates a <code>DemoLoader</code> for making class WebPage
- * updatable. Then it runs main() in sample.evolve.DemoServer.
- */
- public static void main(String[] args) throws Throwable {
- Evolution translator = new Evolution();
- ClassPool cp = ClassPool.getDefault();
- Loader cl = new Loader();
- cl.addTranslator(cp, translator);
-
- translator.makeUpdatable("sample.evolve.WebPage");
- cl.run("sample.evolve.DemoServer", args);
- }
- }
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