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11 lines
371 B
11 lines
371 B
public class Main {
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public static void main(String[] args) {
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Shape circle = new Circle(5);
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Shape rect = new Rectangle(4, 6);
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Shape tri = new Triangle(3, 8);
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ShapeUtil.printArea(circle); // 面积为：78.54
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ShapeUtil.printArea(rect); // 面积为：24.00
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ShapeUtil.printArea(tri); // 面积为：12.00
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}
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}
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