Hi, I've worked on doing an application in java to convert celsius to fahrenheit and visa-versa but it's not compiling and i can't seem to solve the errors. If anyone has a chance to take a look here's the code: It comes in 2 parts.. 1 class with the equation and 1 class to control the user input: 1st Class: import javax.swing.*; import java.lang.*; import java.io.*; import java.util.*; public class Equation { public static float convertF(float temp) { fahrenheit = (centigrade*1.8f) + 32; } public static float convertC(float temp) { centigrade = (fahrenheit/32)/1.8f; } } 2nd Class: import javax.swing.*; import java.lang.*; import java.io.*; import java.util.*; public class Temperature { String input = JOptionPane.showInputDialog(null, "Enter which temperature you wish to convert using C or F:"); String temp = String.parseString(input); { if(temp.equals("C")); String input1 = JOptionPane.showInputDialog(null, "Enter Temperature in Centigrade to convert:"); float centigrade = Equation.convertF(input1); { if(temp.equals("F")); String input2 = JOptionPane.showInputDialog(null, "Enter Temperature in Fahrenheit to convert:"); float fahrenheit = Equation.convertC(input2); } } } Thanks if anyone can spot my errors. Chris.

I'm not familiar with Java but you Fahrenheit to centigrade formula is wrong. It should be: centigrade = (Fahrenheit-32)/1.8f; } Stuart

ye thanks i've managed to redo the application from scratch and it's now working. Thanks a lot for your help.

So, are you going to show us the code? M2 If at first you don't succeed, you're about average.