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// 5. 主类,包含 main 方法进行测试
public class ShapeTest {
public static void main(String[] args) {
// 创建对象
Shape1 circle = new Circle();
Shape1 rectangle = new Rectangle();
Shape1 generalShape = new Shape1();
// 创建工具类对象
ShapeDrawer drawer = new ShapeDrawer();
// 调用 drawShape 方法,体现多态
drawer.drawShape(generalShape); // 输出:绘制形状
drawer.drawShape(circle); // 输出:绘制圆形
drawer.drawShape(rectangle); // 输出:绘制矩形
}
}