SE450: Java Self-Assessment [11/41]

Develop a linked list class.

• It should support the usual operations on a list such as insertion and deletion.
• It also supports a toString method that returns the contents of the list as a string. Question: how do you efficiently concatenate Strings in Java?

Develop a class hierarchy of shapes, which includes:

Shape 
  Closed Shape 
    Circle, Rectangle, ... 
  Open Shape 
    Line, Curve, ... 
  Text 

Each class supports a method toString that returns the attributes of the shape as a string.

Instantiate a List of shapes. Use the java.util.List interface and a List implementation from the JDK.

Insert several different shapes into the List, and print out the contents of the List of shapes using the appropriate List iteration methods that are part of the Java Collections classes.

If you have:

• no difficulty --- fine
• some difficulty --- will be ok, read and practice
• major difficulty --- not ready