<![CDATA[public class Stack {
private java.util.Vector pool = new java.util.Vector();
public Stack() {
}
public Stack(int n) {
pool.ensureCapacity(n);
}
public void clear() {
pool.clear();
}
public boolean isEmpty() {
return pool.isEmpty();
}
public Object topEl() {
return pool.lastElement();
}
public Object pop() {
return pool.remove(pool.size()-1);
}
public void push(Object el) {
pool.addElement(el);
}
public String toString() {
return pool.toString();
}
}
]]>