GeometricVersion3

  课程设计 几何图形(满分50 分) 版本1：满分10 分 设计抽象类GeometricObject 及其子类Triangle 和Circle。 GeometricObject 类设计要求如下： ■ 一个名为color 的Color 类型的私有数据域，表示对象的颜色。 ■ 一个名为filled 的Boolean 类型的私有数据域，表示对象是否填充颜色。 ■ 一个名为dateCreated 的Date 类型的私有数据域，表示对象的创建日期。 ■ 一个无参构造方法。 ■ 一个能创建特定color 和filled 的有参构造方法。 ■ 相关数据域的访问器和修改器。 ■ 两个个名为draw 和erase 的抽象方法。 ■ 一个名为getArea 的抽象方法。 ■ 一个名为getPerimeter 的抽象方法。 ■ 重写toString 方法。 Triangle 类设计要求如下： ■ 三个名为side1、side2 和 side3 的double 类型的私有数据域表示三角形的三条边。它 们的默认值是1.0。要求三个数据域保留2 位小数。 ■ 一个无参的构造方法创建默认三角形。 ■ 一个能创建带指定side1、side2 和 side3 的有参构造方法。 ■ 所有三个数据域的访问器和修改器方法。 ■ 父类抽象方法的实现。 ■ 重写toString 方法。 Circle 类(Curriculum Design Geometry (out of 50) Version 1: 10 points Design an abstract class and its subclasses GeometricObject Triangle and Circle. GeometricObject class design requirements are as follows: ■ a named color of the Color type private data field that indicates the object s color. ■ a Boolean type called filled private data field that indicates whether the object fill color. ■ Date type named dateCreated private data field, which means that the object was created. ■ a no-argument constructor. ■ one can create a specific color and filled in with arg constructor. ■ Related data field accessor and modifier. ■ two months called draw and erase the abstract methods. ■ an abstract method named getArea. ■ an abstract method named getPerimeter. ■ overridden toString method. Triangle class design requirements are as follows: ■ three named side1, side2 and a double side3 private data field indicates the type of triangle with three sides. It Our default value is 1.0. Requires)

GeometricVersion3
.................\.classpath,295,2013-05-18
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.................\...\.................\Circle.class,1747,2013-06-19
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.................\src
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.................\...\.................\Circle.java,1587,2013-05-29
.................\...\.................\GeometricObject.java,462,2013-05-29
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.................\...\.................\test.java,294,2013-05-28
.................\...\.................\Triangle.java,1596,2013-05-29