Java by API/java.util/EmptyStackException

EmptyStackException as a type

   <source lang="java">

/*

* Output:
* 

stack: [] push(42) stack: [42] pop -> 42 stack: [] empty stack

*  
*/

import java.util.Stack; import java.util.EmptyStackException; public class MainClass {

 public static void main(String args[]) {
   Stack st = new Stack();
   System.out.println("stack: " + st);
   st.push(new Integer(42));
   System.out.println("push(" + 42 + ")");
   System.out.println("stack: " + st);
   System.out.print("pop -> ");
   Integer a = (Integer) st.pop();
   System.out.println(a);
   System.out.println("stack: " + st);
   try {
     st.pop();
   } catch (EmptyStackException e) {
     System.out.println("empty stack");
   }
 }

}

      </source>