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POAlternatives to java.lang.reflect.Proxy for creating proxies of abstract classes (rather than interfaces)
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copied!<p>According to <a href="http://download.oracle.com/docs/cd/E17409_01/javase/6/docs/api/java/lang/reflect/Proxy.html" rel="noreferrer">the documentation</a>:</p> <blockquote> <p>[<code>java.lang.reflect.</code>]<code>Proxy</code> provides static methods for creating dynamic proxy classes and instances, and it is also the superclass of all dynamic proxy classes created by those methods.</p> </blockquote> <p>The <a href="http://download.oracle.com/docs/cd/E17409_01/javase/6/docs/api/java/lang/reflect/Proxy.html#newProxyInstance%28java.lang.ClassLoader,%20java.lang.Class%5b%5d,%20java.lang.reflect.InvocationHandler)" rel="noreferrer"><code>newProxyMethod</code> method</a> (responsible for generating the dynamic proxies) has the following signature:</p> <pre><code>public static Object newProxyInstance(ClassLoader loader, Class<?>[] interfaces, InvocationHandler h) throws IllegalArgumentException </code></pre> <p>Unfortunately, this prevents one from generating a dynamic proxy that <em>extends</em> a specific abstract class (rather than <em>implementing</em> specific interfaces). This makes sense, considering <code>java.lang.reflect.Proxy</code> is "the superclass of all dynamic proxies", thereby preventing another class from being the superclass.</p> <p>Therefore, are there any alternatives to <code>java.lang.reflect.Proxy</code> that can generate dynamic proxies that <em>inherit</em> from a specific abstract class, redirecting all calls to the <strong>abstract</strong> methods to the invocation handler?</p> <p>For example, suppose I have an abstract class <code>Dog</code>:</p> <pre><code>public abstract class Dog { public void bark() { System.out.println("Woof!"); } public abstract void fetch(); } </code></pre> <p>Is there a class that allows me to do the following?</p> <pre><code>Dog dog = SomeOtherProxy.newProxyInstance(classLoader, Dog.class, h); dog.fetch(); // Will be handled by the invocation handler dog.bark(); // Will NOT be handled by the invocation handler </code></pre>

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