Hello,

I've been trying to figure out one part of my code for around 3 hours.

I've been rewriting it different ways, only running what the logic error is and not the other parts and I still can't seem to get what I want.

I think that if I can figure out this one part of the program that it will help me with the whole program as I'll know what I did wrong.

I'll tell you what I'm having problems at in the program at the bottom of the code.

I'm a beginner so i'm sure it's not a very difficult problem to solve.

This is the program directions:

Code Java:

`/* Write a program that prompts the user to enter three points (x1, *y1), (x2, y2), (x3, y3) of a triangle and displays its area. The *formula for computing the area of a triangle is *S = (side1 + side2 + side3)/2; *Area = √(s(s-side1)(s-side2)(s-side3)) */`

I'm trying to be consistent with this problem by only using certain numbers.

If you run the program it will ask you these numbers in the order I listed them.

The number's I am using are:

x1 = 3

y1 = 4

x2 = 5

y2 = 6

x3 = 7

y3 = 4

(i hope the code is easy to read i tried to make it so)

Here is the code:

To avoid typing too much in the code, I'll tell you exactly what my problem is.Code Java:

import javax.swing.JOptionPane; public class AreaOfATriangle { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub /* Write a program that prompts the user to enter three points (x1, *y1), (x2, y2), (x3, y3) of a triangle and displays its area. The *formula for computing the area of a triangle is *S = (side1 + side2 + side3)/2; *Area = √(s(s-side1)(s-side2)(s-side3)) */ String x1String = JOptionPane.showInputDialog("Enter a point for x1 of (P(x and y)) for a triangle: "); double x1 = Double.parseDouble(x1String); String y1String = JOptionPane.showInputDialog("Enter a point for y1 of (P(x and y)) for a triangle: "); double y1 = Double.parseDouble(y1String); String x2String = JOptionPane.showInputDialog("Enter a point for x2 of (P(x and y)) for a triangle: "); double x2 = Double.parseDouble(x2String); String y2String = JOptionPane.showInputDialog("Enter a point for y2 of (P(x and y)) for a triangle: "); double y2 = Double.parseDouble(y2String); String x3String = JOptionPane.showInputDialog("Enter a point for x3 of (P(x and y)) for a triangle: "); double x3 = Double.parseDouble(x3String); String y3String = JOptionPane.showInputDialog("Enter a point for y3 of (P(x and y)) for a triangle: "); double y3 = Double.parseDouble(y3String); double side1 = Math.pow(Math.pow((x2-x1),2) + Math.pow((y2-y1),2),(0.5));/*this should be 4 but for some reason it's giving me 2.82364723723 (i'm calculating the side of a triangle here) *i'm using the distance formula to find the side, the program didn't give this to me, I don't know why */ double side2 = Math.pow(Math.pow((x3-x2),2) + Math.pow((y3-y2),2),(0.5));//this is another side of a triangle i'm calculating double side3 = Math.pow(Math.pow((x1-x3),2) + Math.pow((y1-y3),2),(0.5));//another side to calculate double s = (side1 + side2 + side3) / 2;//s means semiperimeter (calculating) double area = Math.pow((s * (s - side1) * (s - side2) * (s - side3)), (0.5));//calculates the area String output = "The area of the triangle is: " + area + ".";//creating a result JOptionPane.showMessageDialog(null, output, "Result", JOptionPane.WARNING_MESSAGE);//displaying the result } }

I'm trying to get an area, but I figured out that in my code there is a logic error in the following piece of code:

I noticed that it was giving me 2.8 instead of 4.0. I couldn't figure this out, why is it doing this? What's wrong in the code and how do i make it 4.0?

Also, in Math.pow in the piece of code I just mentioned, why can't I use (1/2) instead of (0.5)? Does it have something to do with the datatype i'm using?

When i run my code with everything included it says there are errors in the project, but it doesn't say where. When i run it anyway (on eclipse), the area is give as 3.999999999982 when it

should be 11 (I calculated the area using the numbers I gave and it gave 11).

I assuming that once i correct then it will fix the errors in the program and it will run.

Thank you for taking the time to look at this.