怎么解决实例化类时出现的cannot be applied 错误

Question

import demo01.GeometricObject;

public class sanjiao extends GeometricObject{
    public double bian1;
    public double bian2;
    public double bian3;
    public  void sanjiao(){}
    public void sanjiao(double a[],String b,boolean c){
        bian1=a[0];
        bian2=a[1];
        bian3=a[2];
        color=b;
        filled=c;
    }
    public double getArea(){
        double p=(bian1+bian2+bian3)/2;
        return Math.sqrt((1/16)*(bian1+bian2+bian3)*(bian1+bian2-bian3)*(bian2+bian3-bian1));
    }
    public double getPerimeter(){
        return bian1+bian2+bian3;
    }

}

 public void main(String[] args){
        System.out.print("请输入三角形的三条边，颜色以及三角形是否填充");
        Scanner input=new Scanner(System.in);
        double [] a=new double[3];
        for(int i=0;i<3;i++){
            a[0]=input.nextDouble();
        }
        String b=input.next();
        boolean c=input.nextBoolean();

        sanjiao d=new sanjiao(a,b,c);
    }

错误
'sanjiao()' cannot be applied to '(double[], java.lang.String, boolean)'

以前也遇到过这样的问题，要怎么办啊，希望解答，非常感谢

Answer 1

构造函数没有返回值类型。。。(void 也算返回值类型)