You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
29 lines
994 B
29 lines
994 B
package com.shape;
|
|
|
|
public class TestShape {
|
|
public static void main(String[] args) {
|
|
System.out.println("=== 图形面积计算器（使用抽象类重构）===\n");
|
|
|
|
// 创建不同图形对象
|
|
Circle circle = new Circle(5.0);
|
|
Rectangle rectangle = new Rectangle(4.0, 6.0);
|
|
Triangle triangle = new Triangle(3.0, 4.0, 5.0);
|
|
|
|
// 使用 ShapeUtil 统一处理（多态体现）
|
|
ShapeUtil.printArea(circle);
|
|
ShapeUtil.printArea(rectangle);
|
|
ShapeUtil.printArea(triangle);
|
|
|
|
System.out.println("\n=== 使用 display() 方法 ===");
|
|
circle.display();
|
|
rectangle.display();
|
|
triangle.display();
|
|
|
|
// 多态数组示例（进一步展示统一处理优势）
|
|
System.out.println("\n=== 多态数组演示 ===");
|
|
Shape[] shapes = {circle, rectangle, triangle};
|
|
for (Shape s : shapes) {
|
|
ShapeUtil.printArea(s);
|
|
}
|
|
}
|
|
}
|