（Triangle 类）设计一个继承了抽象类GeometricObject 的新的Triangle类。绘制Triangle 类和GeometricObject 类的UML图并实现Triangle类。编写测试程序，提示用户输入三角形的三条边、颜色以及一个表明该三角形是否填充的布尔值。程序应该使用这些边来创建一个Triangle对象，并根据用户的输入来设置color和filled属性。程序应该显示面积、周长、颜色以及表明是否被填充的真或假的值。

以下是Triangle类和GeometricObject类的UML图：

                  GeometricObject
       -------------------------------
       -color: String
       -filled: boolean
       -dateCreated: Date
       -------------------------------
       +GeometricObject()
       +GeometricObject(color: String, filled: boolean)
       +getColor(): String
       +setColor(color: String): void
       +isFilled(): boolean
       +setFilled(filled: boolean): void
       +getDateCreated(): Date
       +toString(): String
       +getArea(): double
       +getPerimeter(): double

                        |
                        V

                      Triangle
       -------------------------------
       -side1: double
       -side2: double
       -side3: double
       -------------------------------
       +Triangle()
       +Triangle(side1: double, side2: double, side3: double, color: String, filled: boolean)
       +getSide1(): double
       +setSide1(side1: double): void
       +getSide2(): double
       +setSide2(side2: double): void
       +getSide3(): double
       +setSide3(side3: double): void
       +getArea(): double
       +getPerimeter(): double
       +toString(): String

以下是Triangle类的代码实现：

import java.util.Date;

public class Triangle extends GeometricObject {
    private double side1, side2, side3;

    public Triangle() {
        this(1.0, 1.0, 1.0, "white", false);
    }

    public Triangle(double side1, double side2, double side3, String color, boolean filled) {
        super(color, filled);
        this.side1 = side1;
        this.side2 = side2;
        this.side3 = side3;
    }

    public double getSide1() {
        return side1;
    }

    public void setSide1(double side1) {
        this.side1 = side1;
    }

    public double getSide2() {
        return side2;
    }

    public void setSide2(double side2) {
        this.side2 = side2;
    }

    public double getSide3() {
        return side3;
    }

    public void setSide3(double side3) {
        this.side3 = side3;
    }

    public double getArea() {
        double s = (side1 + side2 + side3) / 2;
        return Math.sqrt(s * (s - side1) * (s - side2) * (s - side3));
    }

    public double getPerimeter() {
        return side1 + side2 + side3;
    }

    public String toString() {
        return "Triangle: side1 = " + side1 + " side2 = " + side2 + " side3 = " + side3;
    }
}

以下是测试程序的代码实现：

import java.util.Scanner;

public class TestTriangle {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        System.out.print("Enter three sides of the triangle: ");
        double side1 = input.nextDouble();
        double side2 = input.nextDouble();
        double side3 = input.nextDouble();

        System.out.print("Enter the color of the triangle: ");
        String color = input.next();

        System.out.print("Is the triangle filled (true or false)? ");
        boolean filled = input.nextBoolean();

        Triangle triangle = new Triangle(side1, side2, side3, color, filled);

        System.out.println("Area: " + triangle.getArea());
        System.out.println("Perimeter: " + triangle.getPerimeter());
        System.out.println("Color: " + triangle.getColor());
        System.out.println("Filled: " + triangle.isFilled());
    }
}