Inheritance can descend through multiple levels, leading to ever-more-specific categories. As an example, Figure 1 shows car and truck inheriting from vehicle; station wagon inheriting from car ...

Java’s single inheritance limitation is usually not a problem in the normal course of development. In fact, the need to use multiple inheritance could be a sign of a bad design.

Fortunately, there are a few strategies to overcome this problem. Here are few examples of how to make multiple values per key in a Java map component possible. Java’s multiple values per key problem ...