Comments for Java Blog

Comment on Using static Factory-methods to create Generics by tino

tino — Wed, 14 Oct 2009 10:57:17 +0000

Yes guys, you're absolutely correct: you could use Google Collections for generic Maps, Lists, ...

But you can also apply this technique on self-created-Generics that are not available in Google Collections like e.g. MyGeneric.

Tino.

Comment on Using static Factory-methods to create Generics by Raja

Raja — Thu, 08 Oct 2009 14:29:47 +0000

Or, we could also use google collections for this.

Comment on Using static Factory-methods to create Generics by Dimitris Andreou

Dimitris Andreou — Thu, 08 Oct 2009 10:56:54 +0000

Just use google collections.

Comment on Creating a simple cache in Java using a LinkedHashMap and an Anonymous Inner Class by Joe

Joe — Wed, 22 Jul 2009 18:48:38 +0000

Check for synchronization issues.

From Sun’s LinkedHashMap API doc:

”Note that this implementation is not synchronized.”

Comment on Creating a simple cache in Java using a LinkedHashMap and an Anonymous Inner Class by Tino

Tino — Mon, 29 Jun 2009 07:37:50 +0000

Hi Robin,

you’re absolutely correct! I forgot to invoke the special constructor for the LinkedHashMap to use access-ordering. I’ve corrected that part.

Thanks!

Comment on Creating a simple cache in Java using a LinkedHashMap and an Anonymous Inner Class by Robin

Robin — Mon, 29 Jun 2009 00:48:19 +0000

I don’t think that’s an LRU cache. That’s a Least Recently Added cache. For it to be LRU, on a cache-hit, the item should be moved to the beginning of the list.

Comment on Mapping Java-Objects to a database using Reflection and Generics (Part 1) by Tino

Tino — Sat, 06 Jun 2009 15:04:55 +0000

Hi Matt,

DatabaseConnecter is a simple Interface that provides a java.sql.Connection:

/**
*
* Creates a connection to a database.
*
* @author Tino
* @created 03.12.2008
*
*/
public interface DatabaseConnecter {

/**
* Establishes a new connection to the database
*
* @return A new connection to the database
* @throws SQLException
*/
public Connection createConnection() throws SQLException;

/**
* Returns the connection url
*
* @return
*/
public String getConnectionUrl();
}

Comment on Mapping Java-Objects to a database using Reflection and Generics (Part 1) by Matt

Matt — Fri, 29 May 2009 21:05:02 +0000

This code also requires the class DatabaseConnecter to compile. Would you post the source for DatabaseConnecter ?

Comment on Mapping Java-Objects to a database using Reflection and Generics (Part 2) by Jonas Abreu

Jonas Abreu — Sun, 03 May 2009 19:13:10 +0000

Hello,

maybe you’ll find this project interesting for dealing with Java’s Reflection API.

http://projetos.vidageek.net/mirror/mirror

Regards,