Chapter 4, Problem 22E

Create an ArrayList in the Code Pad by typing the following two lines:

$\begin{array}{l}\text{import java}\text{.uti1}\text{. ArrayList};\hfill \\ \text{new ArrayList}<\text{String}>()\hfill \end{array}$

If you write the last line without a trailing semicolon, you will see the small red object icon. Drag this icon onto the object bench. Examine its methods and try calling some (such as add, remove, size, isEmpty). Also try calling the same methods from the Code Pad. You can access objects on the object bench from the Code Pad by using their names. For example, if you have an ArrayList named all on the object bench, in the Code Pad you can type:

a11.size()