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13 lines
368 B
13 lines
368 B
public class ShapeUtil {
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public void printArea(Shape shape) {
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System.out.println("图形的面积为：" + shape.getArea());
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}
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public static void main(String[] args) {
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ShapeUtil util = new ShapeUtil();
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util.printArea(new Circle(5));
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util.printArea(new Rectangle(4, 3));
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util.printArea(new Triangle(3, 4));
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}
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}
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