An interceptor can be defined in the bean class or in another class. In this example, it will be defined in the bean's class. A business interceptor is defined by using the @AroundInvoke annotation.

The following interceptor will print the name of the method that is invoked. Of course, this could be extended to perform more functions.

    /**
     * Dummy interceptor.
     * @param invocationContext contains attributes of invocation
     * @return method's invocation result
     * @throws Exception if invocation fails
     */
    @AroundInvoke
    public Object intercept(final InvocationContext invocationContext) throws Exception {
        System.out.println("Intercepting method '" + invocationContext.getMethod().getName()
                + "'.");
        try {
            return invocationContext.proceed();
        } finally {
            System.out.println("End of intercepting.");
        }
    }