/*
* 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");
}
}
}