FTP Server in Java (and of course Open Source ;-))

Here are some interesting FTP servers written in Java and Open Source:

A list of available FTP servers (not only Open Source and Java) can be found in these sites:

It would be nice to have a complete comparison between all those available products because at the end you would only choose one product!

Cheers,
Lofi.

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Creating Spring Bean dynamically in the Runtime

In my training someone asked me whether it is possible to create an object (a Spring Bean) dynamically so you can choose which implementation you want to have in the runtime. So at the compile time you don't know what object actually should be created yet. The application should decide what object to be created based on a property file.

1. We create an annotation so we can mark the method which should be able to create the object dynamically:

...
package your.package;
...
@Retention(RetentionPolicy.RUNTIME)
public @interface InjectDynamicObject {
}
...
2. Use the new created annotation in your method which should be able to create the object dynamically:
... @Named("customerBo") public class CustomerBoImpl implements CustomerBo { ... @Override @InjectDynamicObject public Customer getDynamicCustomer() { return this.dynamicCustomer; } ...
3. Write an aspect with Pointcut and Advise which change the object returned by the method in the step 2:
... @Named @Aspect public class Dyn…

GWT Training for Java Developers with GWT Boot

I'm always a fan of "one language solution with Java to rule them all", here are sofar my opinions about Polyglot Programming:
Why "Polyglot Programming" or "Do It Yourself Programming Languages" or "Language Oriented Programming" sucks?Warum Polyglot Programming nicht praxistauglich ist Java als universelle Programmiersprache Until today nobody can excite me about Polyglot Programming. My points are getting another big support after I read the "Rise of Polyglot at Netflix" presentation which says that Polyglot is expensive, also for company in the category of Netflix. At the end of the day we need to be productive. Our applications should have a high quality standard and the total costs (TCO) of our software development should be manageable and low. To be able to reach this goal we have Java with Spring Boot or JakartaEE on the server-side which offers REST interfaces. So logically for user interface development on the client-side I…

Smart Home Sweet Home with Gigaset Elements?

Introduction
Last week I had a chance to try the Smart Home solution from Gigaset Elements. I read some articles about this product which said how easy to install this product for dummy users. Those articles woke my interest and I began to google products for Smart Home solutions.

In this article (German language) you will find a nice overview about some products for Smart Home, which can be bought in Germany. The Nest product from Google is still not available in Germany. Although it seems that RWE will offer Nest products in Germany in couple of months.

The installation of Gigaset Elements was really easy. The problem I encountered was to add the sirensensor. I had to push hard the button on the siren sensor at the same time with the button on the base, so that they can communicate with each other. After about one hour I managed to install everything properly.

Points to mention
Generally the idea is very nice. Gigaset Elements try to push KISS (Keep it Simple Stupid) principle. Howev…

Lofi model @ work

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