CRC check program 1 error

[javakid9000]

i'm trying to make a CRC calculator in Java and for some reason i'm having and issue with the "%" operator when trying to get a remainder. Any help would be greatly appreciated:

/*Programmer: Your Name Here
  Date: July 30, 2007
  Class: ITCS 3160
  Professor: Cloyd Goodrum
  Program name: CRC.java
  Description:  Write a program to read in a 16 bit string and a 4 bit generator   polynomial. */
  
  import javax.swing.JOptionPane;
  
  public class CRC
  {
  	public static void main (String[] args)
	{
	int Orig;
	int Gen;
	int CRC;
	
	String original = JOptionPane.showInputDialog ("Please enter the binary message to be sent.");
	String generator = JOptionPane.showInputDialog ("Please enter the 4-bit binary generator.");
	
	Orig = Integer.parseInt (original,2);
	String OrigBinary = Integer.toBinaryString(Orig);
	System.out.println("Original Message: " + OrigBinary);
	
	Gen = Integer.parseInt (original,2);
	String GenBinary = Integer.toBinaryString(Gen);
	System.out.println("Generator: " + GenBinary);
	
	CRC = OrigBinary % GenBinary;
	System.out.println("CRC remainder: " + CRC);
	}
}

[hardwired]

The variables "Orig" and "Gen" are assigned the same value, viz,

	Orig = Integer.parseInt (original,2);
	
	Gen = Integer.parseInt (original,2);

Perhaps you intended

	Gen = Integer.parseInt (generator,2);