UPenn - Inheritance and Data Structures in Java 

What to expect from this Course

About the Instructor : Brandon Krakowsky

How to submit assignments in Codio

Module Introduction

Superclasses and subclasses

A review of method signatures

How to override a method

Why override a method?

Overriding toString

A review of overriding equals

Overriding equals for JUnit tests

Overriding constructors

Calling an overridden method

Why call an overridden method?

Restricting scope

Public vs. protected vs. default vs. private

Which access modifier should I use?

Getters & setters and encapsulation

Coding Demonstration : Animals management project

Course Layout & Syllabus

Tips to succeed in this course

Navigating Assignments using Codio

Module 1 Resources

How to require @Override in Eclipse

Summary : Overloading vs. Overriding

Quiz 1: Inheritance & Polymorphism - Overriding

Quiz 2 : Access Modifiers

Module Introduction

Abstract methods

Declaring abstract classes

Extending abstract classes

Combining abstract & non-abstract methods

Why have abstract classes?

Common syntax errors with subclasses

Possible solutions to the syntax problem

Solution to syntax problem using abstract class

Code Along : Pet project

What is debugging?

Debugging support in Eclipse

Coding Demonstration : Debugging Person class - IndexOutOfBoundsException, & NullPointerException

Coding Demonstration : Debugging syllable counter - Using Step Into, Step Over, & Step Return

Module 2 Resources

Setting breakpoints

Starting the debugger

Controlling program execution

Evaluating variables in the debugger

Returning to the Java perspective

Quiz 3 : Abstract Classes

Quiz 4 : More with Abstract Classes & Debugging

Module Introduction

Why Java I/O is difficult

Streams

How to do I/O

Opening & reading a file, using FileReader & BufferedReader

Opening & reading a file, using Scanner

File writing, using FileWriter & PrintWriter

File writing, using FileWriter & BufferedWriter

File types

Errors vs. exceptions

What to do about errors & exceptions

Dealing with exceptions

The try-catch statement

'finally'

Two ways to deal with exceptions

Using Scanner, & FileNotFoundException

Using FileReader & BufferedReader, & FileNotFoundException, IOException

Using FileWriter & PrintWriter, & IOException

Module 3 Resources

Different kinds of built-in exceptions

Different kinds of built-in errors

Quiz 5 : File I/O

Quiz 6 : More with File I/O & Exceptions

Module Introduction

About the Collections Framework

Types of collections & ?collection-like? things (maps)

Methods in the collection interface

Implementations

List interface

Deque interface

Set interface

Map interface

General rules for selecting an implementation

Iterator

Coding Demonstration : Remove range from a list using an Iterator

Coding Demonstration : Add stars to a list using ArrayList

Coding Demonstration : Count words using a HashMap

Coding Demonstration : Count unique words using a HashSet

Coding Demonstration : Set food toppings using a HashMap

What is a regular expression?

Coding Demonstration : Split a String using str.split()

Coding Demonstration : Replace all with a pattern using str.replaceAll()

Coding Demonstration : Get parts of a phone number using groups and character classes

Coding Demonstration : Replace an area code using str.replaceFirst()

Module 4 Resources

Sorting & searching collections

Arrays class

Quiz 7 : Collections/Maps

Quiz 8 : More with Collections/Maps & Regular Expressions