this is what i have provided for the code would really appreciate itimport java.util.Scanner;
class Triangle extends GeometricObject
{

public double side1;
public double side2;
public double side3;
public Triangle() //default constructor
{
    side1=1.0;
    side2=1.0;
    side3=1.0;
}

public Triangle(double side1,double side2,double side3) //peremetrised constructor
{
    this.side1=side1;
    this.side2=side2;
    this.side3=side3;
}
public double getPerimeter() //function for getting peremeter for triangle
{
    return(side1+side2+side3) ;

}




// function for getting area of triangle
public double getArea()
{
    double area,s;
    s=side1+side2+side3;
    area = Math.sqrt(s * (s- side1) * (s - side2) * (s - side3));
    return(area);

}
@Override
public String toString()//to print the data
{
    String s;
    s="Triangle:side1 "+ side1 +" side2 " + side2 + " side3 "+side3;
    return(s);
}

private String getSide1() {
    // TODO Auto-generated method stub
    return null;
}

private String getPerimeter(double d) {
    // TODO Auto-generated method stub
    return null;
}

private String getPerimeter(String string) {
    // TODO Auto-generated method stub
    return null;
}

private String getSide3() {
    // TODO Auto-generated method stub
    return null;
}

private String getSide2() {
    // TODO Auto-generated method stub
    return null;
}


public static void main(String args[])
{

    Scanner input = new Scanner(System.in);

    System.out.println("Enter three sides of the Triangle");
    double side1 = input.nextDouble();
    double side2 = input.nextDouble();
    double side3 = input.nextDouble();

    System.out.println("Enter the color of the Triangle");
    String color = input.next();

    System.out.println(" Is the Triangle filled? Reply with 'True' or 'False' ");

    String filled = input.next();
}


{
    Triangle triangle = new Triangle(side1, side2, side3);
    triangle.setFilled(isFilled());


    // Display
    System.out.println("The Triangle Sides are \n side 1: "
            + triangle.getSide1() + "\n Side 2: " + triangle.getSide2()
            + "\n Side 3: " + triangle.getSide3());

    System.out.println("The Triangle's Area is " + triangle.getArea());
    System.out.println("The Triangle's Perimeter is " + triangle.getPerimeter());
    System.out.println("The Triangle's Color is " + triangle.getColor());
    System.out.println("Is the Triangle filled? " + triangle.isFilled());
}
}

Attachments:

• 1509977416-2017-08-01.png