Abstract methods solve this problem with draw. By making draw an abstract method (and Shape an abstract class as a result), you're giving Java awareness of the draw method and requiring each subclass ...

Energy consumption and efficiency is an important basis of a country's energy strategy formulation. Sankey Diagram has been more and more widely applied in energy consumption research as an intuitive ...

Contrary to the previous semi-supervised and complicated isoline drawing methods, we developed a real-time and low time complexity isoline method by the JAVA development language. Our method is based ...