Author Archives: krzysztoftomaszewski

About krzysztoftomaszewski

I've got M.Sc. in software engineering. I graduated in 2005 at Institute of Computer Science, Warsaw University of Technology, Faculty of Electronics and Information Technology. I'm working on computer software design and engineering continuously since 2004.

RestTemplate and <mvc:message-converters> in Spring Framework 4.3

The Spring Framework’s documentation says that RestTemplate instance created by the default constructor gets the default set of HttpMessageConverters. But what is the default set of HttpMessageConverters? Well, this is defined in the Spring Framework Reference. Unfortunately I’ve missed it … Continue reading

Posted in Java, Spring | Tagged | Leave a comment

How to add a key binding to toggle a touchpad under Linux

My previous laptop (Asus) had a special key on its keyboard to toggle the touchpad. It was working out of the box with Linux Mint & the Mate desktop environment – there was a special support for it. My new … Continue reading

Posted in Linux | Leave a comment

Problems with Linux on a HP Notebook

This is a documentation of my tries to get a properly working Linux desktop environment on a brand new laptop: HP Notebook 15-ba006nm (P/N: 1BV18EA). This hardware contains: APU: AMD A10 9600P. It has integrated GPU: Radeon R5, 3rd generation … Continue reading

Posted in hardware, Linux | Leave a comment

Problems with Wifi signal under Linux

Detailed problem description: On a brand new laptop (HP Notebook – 15-ba006nm, P/N: 1BV18EA) with RTL8723BE PCIe Wireless Network Adapter under a quite new version of Linux (Linux Mint 18.1) with kernel 4.4.0-92-generic I’ve noticed very poor Wifi signal reception. In … Continue reading

Posted in hardware, Linux | 1 Comment

Security holes in Intel CPUs

SHORT: This is my collection of links to articles about Intel CPU/chipset security holes. For some longer time I’m interested in security holes/flaws in PC hardware as I find such things a real nightmare from software developer point of view. … Continue reading

Posted in BIOS, hardware, security | 2 Comments

Google App Engine, Java, JPA 2, Spring Framework, Maven

DISCLAIMER: This was going (in 2014!) to be a full tutorial but at some point I’ve lost motivation in digging in the Google App Engine. Actually I was so tired with this GAE data store that I felt really relieved … Continue reading

Posted in GoogleAppEngine, Java, Spring | Tagged , , | 1 Comment

RSA signatures in Java with Bouncy Castle

This is a complete guide, starting from RSA key pair generation into PEM files, through loading private/public keys from files into proper Bouncy Castle objects, to digital signature creation and verification – all using Bouncy Castle. No JCA. How to … Continue reading

Posted in Java, security | Tagged , | Leave a comment