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14 lines
314 B
14 lines
314 B
// 文件名：Circle.java
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public class Circle extends Shape {
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private double radius; // 半径
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public Circle(double radius) {
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this.radius = radius;
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}
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// 实现父类的抽象方法
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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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}
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