设计一个测试类，随机生成圆或三角形及其颜色和是否填充

好的，下面是一个简单的测试类的设计，可以随机生成圆或三角形的形状、颜色和是否填充：

import java.util.Random;

public class ShapeGeneratorTest {
    public static void main(String[] args) {
        Random random = new Random();
        ShapeGenerator shapeGenerator = new ShapeGenerator();
        
        for (int i = 0; i < 10; i++) {
            Shape shape;
            if (random.nextBoolean()) {
                shape = shapeGenerator.generateCircle();
            } else {
                shape = shapeGenerator.generateTriangle();
            }
            System.out.println("Shape: " + shape.getType() + ", Color: " + shape.getColor() + ", Filled: " + shape.isFilled());
        }
    }
}

其中，`ShapeGenerator` 类是一个随机生成形状的工具类，它包含了 `generateCircle()` 和 `generateTriangle()` 两个方法，分别用来生成圆和三角形。`Shape` 类是一个抽象类，它定义了形状的基本属性和方法，包括类型、颜色、是否填充等。具体的实现可以参考下面的代码：

import java.awt.*;

public abstract class Shape {
    protected String type;
    protected Color color;
    protected boolean filled;

    public String getType() {
        return type;
    }

    public Color getColor() {
        return color;
    }

    public boolean isFilled() {
        return filled;
    }
}

class Circle extends Shape {
    public Circle(Color color, boolean filled) {
        this.type = "Circle";
        this.color = color;
        this.filled = filled;
    }
}

class Triangle extends Shape {
    public Triangle(Color color, boolean filled) {
        this.type = "Triangle";
        this.color = color;
        this.filled = filled;
    }
}

class ShapeGenerator {
    private Random random = new Random();

    public Circle generateCircle() {
        Color color = generateRandomColor();
        boolean filled = random.nextBoolean();
        return new Circle(color, filled);
    }

    public Triangle generateTriangle() {
        Color color = generateRandomColor();
        boolean filled = random.nextBoolean();
        return new Triangle(color, filled);
    }

    private Color generateRandomColor() {
        int r = random.nextInt(256);
        int g = random.nextInt(256);
        int b = random.nextInt(256);
        return new Color(r, g, b);
    }
}

这个测试类的输出可能会像这样：

Shape: Circle, Color: java.awt.Color[r=249,g=82,b=7], Filled: true
Shape: Triangle, Color: java.awt.Color[r=222,g=79,b=135], Filled: false
Shape: Triangle, Color: java.awt.Color[r=150,g=20,b=191], Filled: true
Shape: Circle, Color: java.awt.Color[r=43,g=76,b=159], Filled: false
Shape: Circle, Color: java.awt.Color[r=107,g=166,b=108], Filled: true
Shape: Circle, Color: java.awt.Color[r=137,g=5,b=216], Filled: true
Shape: Circle, Color: java.awt.Color[r=95,g=209,b=227], Filled: true
Shape: Triangle, Color: java.awt.Color[r=179,g=33,b=73], Filled: true
Shape: Circle, Color: java.awt.Color[r=91,g=12,b=123], Filled: false
Shape: Triangle, Color: java.awt.Color[r=63,g=140,b=17], Filled: true