class NumberTree extends ExpressionTree
{   int value;

    public NumberTree(int v) {value=v;}

    public void printStackCode()
     {System.out.println("PUSH "+value);}
    
    public void printExpression()
      {System.out.print(value);}
    
    public void printLispCode()
      {System.out.print(" "+value);}

}