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23 lines
483 B
23 lines
483 B
public class Circle extends Shape {
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private double radius;
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// 构造方法
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public Circle(double radius) {
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this.radius = radius;
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}
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// 实现抽象方法，计算圆的面积
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@Override
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public double getArea() {
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return Math.PI * radius * radius;
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}
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// getter和setter方法
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public double getRadius() {
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return radius;
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}
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public void setRadius(double radius) {
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this.radius = radius;
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}
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}
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