这是我的代码，为什么会出现错误：package com.first; import java.util.; public class experiment { public static void main(String[] args) { Scanner input = new Scanner ( System . in ) ; System . out. println ("输入三角形的三条边、颜色以及一个Boolean值表明该三角形是否填充") ; double side1 = input.nextDouble ( ) ; double side2 = input.nextDouble ( ) ; double side3 = input.nextDouble ( ) ; boolean filled = input.nextBoolean(); String color = input.nextLine ( ) ; Triangle triangle = new Triangle(side1,side2,side3,color,filled); System . out . println ("面积为" + triangle.getArea()) ; System . out . println ("周长为"+ triangle.getPerimeter()) ; System . out . println ("颜色为"+ triangle.getColor()) ; System . out . println ("是否被填充"+ triangle.isFilled()) ; } }package com.first; import java.util.; public class GeometricObject { private String color ; private boolean filled ; GeometricObject (){ }; GeometricObject (String color,boolean filled){ this.color=color; this.filled=filled; }; public String getColor() { return color; } public void setColor(String color) { this.color=color; } public boolean isFilled() { return filled; } public void setFilled(boolean filled) { this.filled=filled; }; public String toString() { return "the color is "+color+"and filled is"+filled; }; };package com.first; import java.util.; public class Triangle extends GeometricObject{ double side1 = 1.0; double side2 = 1.0; double side3 = 1.0; public Triangle() { } public Triangle(double side1, double side2, double side3,String color,boolean filled) { this.side1 = side1; this.side2 = side2; this.side3 = side3; setColor(color); setFilled(filled); } public double getSide1() { return side1; } public double getSide2() { return side2; } public double getSide3() { return side3; } double getArea(){ double s=(side1+side2+side3)/2; return Math.sqrt(s(s-side1)(s-side2)(s-side3)); } double getPerimeter(){ return side1+side2+side3; } public String toString() { return "Triangle: side1=" + side1 + " side2=" + side2 +" side3=" + side3; } }

你的代码中出现错误的原因是用户输入颜色时，输入的字符串中可能包含了空格或者其他非法字符，导致程序无法正确读取颜色。解决方法是在输入颜色之前使用 input.next() 方法清空输入缓冲区。修改后的代码如下：

import java.util.*;

public class experiment {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.println("输入三角形的三条边、颜色以及一个Boolean值表明该三角形是否填充");
        double side1 = input.nextDouble();
        double side2 = input.nextDouble();
        double side3 = input.nextDouble();
        boolean filled = input.nextBoolean();
        input.nextLine(); // 清空输入缓冲区
        String color = input.nextLine();
        Triangle triangle = new Triangle(side1, side2, side3, color, filled);
        System.out.println("面积为" + triangle.getArea());
        System.out.println("周长为" + triangle.getPerimeter());
        System.out.println("颜色为" + triangle.getColor());
        System.out.println("是否被填充" + triangle.isFilled());
    }
}

class GeometricObject {
    private String color;
    private boolean filled;

    GeometricObject() {
    }

    GeometricObject(String color, boolean filled) {
        this.color = color;
        this.filled = filled;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public boolean isFilled() {
        return filled;
    }

    public void setFilled(boolean filled) {
        this.filled = filled;
    }

    public String toString() {
        return "the color is " + color + "and filled is" + filled;
    }
}

class Triangle extends GeometricObject {
    double side1 = 1.0;
    double side2 = 1.0;
    double side3 = 1.0;

    public Triangle() {
    }

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

    public double getSide1() {
        return side1;
    }

    public double getSide2() {
        return side2;
    }

    public double getSide3() {
        return side3;
    }

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

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

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