code in doc

https://docs.google.com/document/d/1S1yhXsTB2PsA9ZOxgtO5KPH0udR3VI6qf7_6jY88cnM/edit?usp=sharing

import java.util.* public class Stack extends Vector public Stack0; I/ constructor public Boolean empty0 public E peek0; public E popO; public E push(E item); public class LinkedList extends AbstractSequentialList implements List, Queue, Cloneable, Serializable { public LinkedList0; // constructor public E getFirst0; public E removeFirst0; public void addLast(E item); public Boolean isEmpty0; The programming 1. Replace your stack of Object with the generic class Stack 3. Replace Post.toString0 method with a for-each loop 4. Replace your exception classes with the following exception class. 5. Remove all unnecessary type casts. enum errorType ExcessLeftParenthesis, ExcessRightParenthesis, ExcessOperator, ExcessOperand; class infixException extends Exception private errorType etype public infixException(errorType et) I/ constructor etype et; public String toString0 return etype.name); import java.util.* public class Stack extends Vector public Stack0; I/ constructor public Boolean empty0 public E peek0; public E popO; public E push(E item); public class LinkedList extends AbstractSequentialList implements List, Queue, Cloneable, Serializable { public LinkedList0; // constructor public E getFirst0; public E removeFirst0; public void addLast(E item); public Boolean isEmpty0; The programming 1. Replace your stack of Object with the generic class Stack 3. Replace Post.toString0 method with a for-each loop 4. Replace your exception classes with the following exception class. 5. Remove all unnecessary type casts. enum errorType ExcessLeftParenthesis, ExcessRightParenthesis, ExcessOperator, ExcessOperand; class infixException extends Exception private errorType etype public infixException(errorType et) I/ constructor etype et; public String toString0 return etype.name)