Simple Stack Problem

Question

Hi All,
I'm trying to create a graphical calculator and want to input the equation as a string into a stack. I think the code does this, but when I try to pop it I get an error. Here's the code:
public void calculate(String n, int parethCount, String temp)
          int nLength = n.length();
          stack = new Stack();
          display.setText("Working");
          while (nLength > 0)
               stack.push(n.substring(nLength, nLength-1));
               nLength--;
          display.setText(stack.pop());
    }I'm just trying to pop the last item inserted into the stack and display it in the calc display. Here's the error I get.
C:\Java\4-14-03>javac calculator1.java
calculator1.java:212: setText(java.lang.String) in javax.swing.text.JTextCompone
nt cannot be applied to (java.lang.Object)
display.setText(stack.pop());
^
1 error
Don't know why. Any thoughts.
Thanks,
bob2829

Answer 1

try this: stack.pop().toString()