public class Variables
  /** This class demonstrates variables
    * */
{
  public static void main(String[] args)
  {
    // declare a variable
    // MUST specify data type of the variable, and then the identifier
    // which is the variable's name
    int x;  // x is a variable of type integer 
    // use assignment to put a value into a variable
    x = 2789543;   // cannot put commas into an integer value 2,789,543
    // 789=x; compiler error.  must have a variable on left of assignment
    System.out.println("The value in x is: " + x);
  }
}