Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...

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 ...

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.

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.

What is a Java string? A Java string is a sequence of characters that exists as an object of the class java.lang. Java strings are created and manipulated through the string class. Once created, a ...