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18 lines
382 B
18 lines
382 B
/**
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* 图形抽象类
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* 定义所有图形的公共行为：计算面积和绘制图形
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*/
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public abstract class Shape {
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/**
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* 抽象方法：计算图形面积
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* @return 图形的面积
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*/
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public abstract double getArea();
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/**
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* 抽象方法：绘制图形
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* 由子类实现具体的绘制逻辑
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*/
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public abstract void draw();
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}
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