See the advanced OO lecture nodes.
Take the following codes and put them in an Eclipse project:
Implement the methods private BSTNode insertItem(BSTNode node, Symbol item) throws BSTExceptionand private Symbol retrieveItem(BSTNode node, String key)>to insert and retrieve symbols.
private BSTNode insertItem(BSTNode node, Symbol item) throws BSTException
private Symbol retrieveItem(BSTNode node, String key)>
Test your methods using BSTDriver.