circledemo.java

来自「有关java学习技巧的课件」· Java 代码 · 共 10 行

public class CircleDemo {
    public static void main(String[] args) {
        renderCircle(new ConcreteCircle(3.33));
        renderCircle(new HollowCircle(10.2));
    }

    public static void renderCircle(AbstractCircle circle) {
        circle.render();
    }
}