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Jeff Friesen

Jeff Friesen teaches Java technology (including Android) to everyone via articles, blogs, books, and software. In addition to writing Java books for Apress, Jeff has written numerous articles on Java and other technologies for JavaWorld, InformIT, Java.net, and SitePoint. Jeff can be contacted via his website at JavaJeff.ca.

Articles by Jeff Friesen

Java 101 primer: Composition and inheritance

A quick guide to the composition technique in Java programming. Learn how to use composition to resolve the well-known problem with inheritance.

By Jeff Friesen

Oct 23, 2015 1 min

Enterprise Applications

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Cisco CCNA, AWS cloud networking among top-paying IT certs

By Denise Dubie

Nov 30, 20237 mins

CertificationsCertificationsCertifications

Mainframe modernization gets a boost from Kyndryl, AWS

By Michael Cooney

Nov 30, 20234 mins

MainframesCloud ComputingData Center

AWS and Nvidia partner on Project Ceiba, a GPU-powered AI supercomputer

By Andy Patrizio

Nov 30, 20233 mins

CPUs and ProcessorsGenerative AISupercomputers

Episode 1: Understanding Cisco’s Converged SDN Transport

Sep 24, 202120 mins

Cisco SystemsInternetNetworking

Episode 2: Pluggable Optics and the Internet for the Future

Sep 23, 202117 mins

Optical DrivesCisco SystemsInternet

Episode 3: Looking Forward: 5G, Digital Transformation, and the Network of the Future

Sep 22, 202114 mins

5GCisco SystemsInternet

How to calculate factorials in Linux

Nov 02, 20232 mins

How to use the nohup command

Oct 31, 20232 mins

How to use date command options

Oct 26, 20232 mins