// *************** SYMBOL TABLE ***************************************
//The next three classes concern the symbol table or tree of definitions.
class Binding {
  //This is what will be stored at the nodes of the symbol table.  I have
  //done everything in this class.

  private char key;
  private int value;

  public Binding(char k, int v){
    key = k;
    value = v;}

  public char GetKey(){return key;}
  public int GetVal(){return value;}
  public void SetVal(int v){value = v;}

  public String toString(){
    String foo = "\n" + key + " is bound to " + value;
    return foo;}
}//end Binding