While designing the class structure, you might find that some classes share functionality with other classes. In that case, you can extend classes by creating subclasses to prevent duplication of ...

Welcome to the Java 101 study guide. This guide complements " Class and Object Initialization." It provides a glossary of terms specific to that article, new homework, solutions to last month's ...

For example, the following code creates an example of the DDATA class representing the data set sasuser.x. The data set will be opened in input mode and has two variables.

This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

Do you have a single class in your Java design that does too much and knows too much? If so, you've fallen into the God object antipattern. Here's a look at how to refactor your God object and ...

Do you need to know how to sort Java objects in a collection, array, or map? Here's how to use the Comparable and Comparator interfaces and avoid ClassCastExceptions.

I use Powershell's "custom-object" command to create custom objects with properties I want to save. But custom-object applies only to one variable. Is it possible to create a custom class, like in ...