budget/src/main/java/budget/backend/structures/LimitedStack.java
public E pop()
  {
    if (size() > 0) return stack.removeFirst();
    else return null;
  }
/**
   * pop the top element of the stack
   * @return the popped element, or null, if the stack is empty
   */
pop the top element of the stack
@return the popped element, or null, if the stack is empty
pop the top element of the stack @return the popped element or null if the stack is empty
public E pop()
  {
    if (size() > 0) return stack.removeFirst();
    else return null;
  }
public E pop ( ) { if ( size ( ) > 0 ) return stack . removeFirst ( ) ; else return null ; }
pop the top element of the stack
 @return the popped element, or null, if the stack is empty
pop the top element of the stack @return the popped element or null if the stack is empty