Thread: if-else statement not working and dont know why

My if else statement is not working...it keeps telling me that the else in the statement is a syntax error and that I should remove it. Whats wrong with it?

 
package Homework2;
import java.util.Scanner;
public class Homework2 {
 
	public static void main(String[] args) {
		// TODO Auto-generated method stub
 
		System.out.println("Welcome to the Triangle Program.");
 
		Scanner keyboard = new Scanner(System.in);
 
		System.out.println("Please enter the length of side 1:");
		double a = keyboard.nextDouble();
 
		System.out.println("Please enter the length of side 2:");
		double b = keyboard.nextDouble();
 
		System.out.println("Please enter the length of side 3:");
		double c = keyboard.nextDouble();
 
		if(a*a + b*b == c*c);
		{
			System.out.println("This is a Right Triangle");
		}
		else 
		{
			System.out.println("This is NOT a right triangle");
		}
	}
 
}

You have a semicolon after the if statement. You need to remove it.