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.

Java 101: Mastering Java exceptions, Part 2

Java 101: Mastering Java exceptions, Part 1

Java 101: Mastering Java exceptions, Part 1

Everything you need to know about throwing, trying, catching, and cleaning up after Java exceptions

Java 101: Datastructures and algorithms in Java, Part 5

Java 101: Datastructures and algorithms in Java, Part 5

In addition to singly linked lists, Java offers several other types of list that you can use to search and sort stored data in your Java programs.

Java 101: Datastructures and algorithms in Java, Part 4

Java 101: Datastructures and algorithms in Java, Part 4

Learn how to search and sort linked lists in Java! Examples in this tutorial demonstrate how to create a singly linked list, insert and delete nodes in a singly linked list, and more. Find out which algorithms are most used to sort...

Java language oddities

Java language oddities

The Java language includes various behaviors that may puzzle newcomers to the language. This post examines three such behaviors involving arrays, bytes and shorts, and private fields and methods.

Java 101: Datastructures and algorithms in Java, Part 3

Java 101: Datastructures and algorithms in Java, Part 3

Multidimensional arrays are useful for complex computing scenarios, and ragged arrays can help conserve memory for big data applications. Learn how to create multidimensional arrays and ragged arrays and use them in your Java programs....

Base64 encoding and decoding in Java 8

Base64 encoding and decoding in Java 8

Java 8 will be remembered mainly for introducing lambdas, streams, a new date/time model, and Nashorn--but don't miss the new Base64 API. It could be just what you need to ensure data integrity in transit.

Java 101: Datastructures and algorithms in Java, Part 2

Java 101: Datastructures and algorithms in Java, Part 2

Get started with one-dimensional arrays and array variables, then try out five algorithms for searching and sorting arrays in your Java programs

Web services in Java SE, Part 4: SOAP with Attachments API for Java

Learn about SAAJ and other advanced Java SE Web service features

Web services in Java SE, Part 3: Creating RESTful Web services

Learn how to use Java SE's JAX-WS API to create a RESTful-based library Web service

Web services in Java SE, Part 2: Creating SOAP web services

Learn how to use Java SE's JAX-WS API to create a SOAP-based units-conversion Web service.

Java 101: Datastructures and algorithms in Java, Part 1

Java 101: Datastructures and algorithms in Java, Part 1

Programmers use datastructures to store and organize data, and algorithms to manipulate that data. Get the basics of these fundamental programming elements, and find out how they work together in your Java programs

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