Java输出一组图形的面积和、周长和，其中图形具备以下特征：圆形：半径；正方形形：边长；三角形：三条边长；输出内容如图：输出内容如图：

在Java中，我们可以分别创建圆形、正方形和三角形的类，并计算每个图形的面积、周长。然后，在主程序中，我们让用户输入对应的属性（圆的半径、正方形的边长或三角形的三边长），根据用户的选择来实例化相应的图形并计算其面积和周长。

以下是简化版的代码示例：

import java.util.Scanner;

class Circle {
    double radius;
    double area, circumference;

    public Circle(double r) {
        radius = r;
        area = Math.PI * radius * radius;
        circumference = 2 * Math.PI * radius;
    }

    // 输出面积和周长
    public void printStats() {
        System.out.println("Circle (radius=" + radius + "):");
        System.out.printf("Area: %.2f\n", area);
        System.out.printf("Circumference: %.2f\n", circumference);
    }
}

class Square {
    double side;
    double area, perimeter;

    public Square(double s) {
        side = s;
        area = side * side;
        perimeter = 4 * side;
    }

    // 输出面积和周长
    public void printStats() {
        System.out.println("Square (side=" + side + "):");
        System.out.printf("Area: %.2f\n", area);
        System.out.printf("Perimeter: %.2f\n", perimeter);
    }
}

class Triangle {
    double a, b, c; // 任意两边长度
    double area, perimeter;

    // 提供构造函数接收三边长度
    public Triangle(double a, double b, double c) {
        this.a = a;
        this.b = b;
        this.c = c;
        perimeter = a + b + c;
        double s = perimeter / 2; // 半周长
        area = Math.sqrt(s * (s - a) * (s - b) * (s - c));
    }

    // 输出面积和周长
    public void printStats() {
        System.out.println("Triangle (a=" + a + ", b=" + b + ", c=" + c + "):");
        System.out.printf("Area: %.2f\n", area);
        System.out.printf("Perimeter: %.2f\n", perimeter);
    }
}

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Choose the shape to calculate:");
        System.out.println("1. Circle");
        System.out.println("2. Square");
        System.out.println("3. Triangle");
        int choice = scanner.nextInt();
        switch (choice) {
            case 1:
                double circleRadius = scanner.nextDouble();
                Circle circle = new Circle(circleRadius);
                circle.printStats();
                break;
            case 2:
                double squareSide = scanner.nextDouble();
                Square square = new Square(squareSide);
                square.printStats();
                break;
            case 3:
                double triangleA = scanner.nextDouble(), triangleB = scanner.nextDouble(), triangleC = scanner.nextDouble();
                if(triangleA + triangleB > triangleC && triangleB + triangleC > triangleA && triangleA + triangleC > triangleB){
                    Triangle triangle = new Triangle(triangleA, triangleB, triangleC);
                    triangle.printStats();
                } else {
                    System.out.println("Invalid triangle sides.");
                }
                break;
            default:
                System.out.println("Invalid choice.");
        }
        scanner.close();
    }
}