Types

Strings

Substrings

• The substring method returns a subset of a String.
• Can either be provided a single int parameter or two int parameters.
  • The substring begins (inclusively) with the character at the index specified in the first parameter and returns a new String from that point forward.
  • If a second parameter is provided, the substrings extends (exclusively) to that index.
  • Range must be within bounds of index.

ArrayList

Return	Method	Description
boolean	add(E e)	Appends element to end of list.
boolean	add(int index, E e)	Inserts element at specified position in list.
void	clear()	Removes all elements from the list.
boolean	contains(Object o)	Returns true is the list contains the item.
E	get(int index)	Returns element at specified position in list.
int	size()	Returns number of elements in list.