This is the essence of subtype polymorphism. Assuming that all four source files (Shapes.java, Shape.java, Rectangle.java, and Circle.java) are located in the current directory, compile them via ...

We use polymorphism all the time in the core Java classes. ... A good analogy would be saying explicitly to the compiler, ... Get the source code for this challenge and run your own tests.

Programs that run on a Java virtual machine (JVM)-like Eclipse OpenJ9-are initially interpreted. To improve performance, a Just-in- Time (JIT) compiler may be employed at run time to translate the ...