Expression Trees Lab

Starter Code

• Operator.java - Enumerated type representing the set of operators. superclass for expression nodes.
• ExpressionNode.java - Abstract superclass for expression nodes.
• OperandNode.java - Class representing operands (leaves) in an expression tree.
• OperatorNode.java - Class representing operators (internal nodes) in an expression tree. UNFINISHED!
• ExpressionDriver.java - Simple test driver for executing expression tree methods.
• PrefixParser.java - Class for converting postfix expressions into expression trees. UNFINISHED!