Java Program that shows the number of shapes in a geometric figure interactively
<p>I have this java program that is supposed to show the number of sides of geometrical shapes of Triangle, Trapezoid and Hexagon. I managed to create the codes such that when I ran the java Shape its shows all the Shapes and the sides all at once, but I want to make it interactive such that a user can be prompted to enter the shape she wants and the return is the number of sides of it, which functionality in Java can best do this? </p>

<pre><code>public abstract class Shape {

    public abstract void numberOfSides();

    public static void main(String[] args)
    {
        System.out.println("The Geometrical characteristics of the figures are as follows");

        Trapezoid t=new Trapezoid();
        Triangle tg=new Triangle();
        Hexagon h=new Hexagon();
        t.numberOfSides();
        tg.numberOfSides();
        h.numberOfSides();
    }
}
class Trapezoid extends Shape {
    public void numberOfSides()
    {
        System.out.println("Trapezoid~It is geometrical figure with an attribute of 4 sides (Of which two are parallel and with no angles)");
    }
}
class Triangle extends Shape {
    public void numberOfSides()
    {
        System.out.println("Triangle~It is geometrical figure with an attribute of 3 sides");   
    }
}   
class Hexagon extends Shape {
    public void numberOfSides()
    {   
        System.out.println("Hexagon-It is geometrical figure with an attribute of 6 sides");
    }
}
</code></pre>

<p>This is my new cord after trying to implement above, its says errors exist, obsolete methods.. </p>

<pre><code>import java.io.*;
 public abstract class Shape {

    public abstract void numberOfSides();

    public static void main(String[] args) 
    {  
        System.out.println("Enter the name of the Shape");
        BufferedReader br = new BufferedReader (new InputStreamReader(System.in));
        try {
        String shapeName = br.readLine();

        if (br.equals ("Trapezoid"))
                {Trapezoid t = new Trapezoid();
                t.numberOfSides();
                }
        else if (br.equals ("Triangle"))    
                {Triangle tg = new Triangle();
                tg.numberOfSides();
                }
        else if (br.equals ("Hexagon")) 
                {Hexagon h = new Hexagon();
                h.numberOfSides();
                }
                }    
}
class Trapezoid extends Shape {
    public void numberOfSides()
{
        System.out.println("Trapezoid~It is geometrical figure with an attribute of 4 sides (Of which two are parallel and with no angles)");
}
}
class Triangle extends Shape {
    public void numberOfSides()
{
        System.out.println("Triangle~It is geometrical figure with an attribute of 3 sides");   
}
}   
class Hexagon extends Shape {
    public void numberOfSides()
{   
        System.out.println("Hexagon-It is geometrical figure with an attribute of 6 sides");
}
}
</code></pre>
