Simple Objects 5: The null value and NullPointerExceptions

Simple Objects: Introduction

Simple Objects 2: Working With Objects

Simple Objects 3: References to Objects

Simple Objects 4: Passing Objects to Methods

Simple Objects 5: The null value and NullPointerExceptions

Iterators: Introducing Iterators

Iterators 2: Looping with an Iterator

Iterators 3: Common Mistakes with Iterators

Iterators 4: the remove method, and the enhanced for-each loop

Binary Search: Introducing Search Algorithms

Binary Search 2: The Basic Idea

Binary Search 3: Analysis

Binary Search 4: Analysis (why the time is logarithmic)

Binary Search 5: The Code

Binary Search 6: The Code

Variables: An Introduction

Variables 2: Declaration and Assignment

Variables 3: The Life-Cycle of a Variable

Variables 4: Variable Scope

Integers: Introducing int values and operations

Integers 2: goToWallAndBack Example

Integers 3: goToWallAndBack Example continued

Integers 4: distanceToWall example

Linked Lists: Introduction