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Can't Get Guice Method Interception to Work
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD})
@BindingAnnotation
public @interface Validating {
    // Do nothing; used by Google Guice to intercept certain methods.
}

public class ValidatingModule implements com.google.inject.Module {
    public void configure(Binder binder) {
        binder.bindInterceptor(Matchers.any(),
            Matchers.annotatedWith(Validating.class,
            new ValidatingMethodInterceptor()),
    }
}

public class ValidatingMethodInterceptor implements MethodInterceptor {
    public Object invoke(MethodInvocation invocation) throws Throwable {
        System.out.println("Hello, AOP!");
    }
}

public class AopTest {
    @Validating
    public int doSomething() {
        // do whatever
    }

    public static main(String[] args) {
        AopTest test = new AopTest();

        Injector injector = Guice.createInjector(new ValidatingModule());

        System.out.println("About to use AOP...");

        test.doSomething();
    }
}

Injector injector = Guice.createInjector(new ValidatingModule ());
AopTest test = injector.getInstance(AopTest.class);