Head First Java a brain-Friendly Guide Kathy Sierra and Bert Bates

Document Outline

• 1. Dive in A Quick Dip: Breaking the Surface
  • The Way Java Works
  • What you’ll do in Java
  • A Very Brief History of Java
    • ">Speed and Memory Usage
    • ">Sharpen your pencil Answers
  • ">Code structure in Java
    • ">What goes in a source file?
    • ">What goes in a class?
    • ">What goes in a method?
  • ">Anatomy of a class
  • ">Writing a class with a main
  • ">What can you say in the main method?
    • ">Looping and looping and...
    • ">Simple boolean tests
  • ">There are no dumb Questions
  • ">Example of a while loop
  • ">Conditional branching
  • ">Coding a Serious Business Application
    • ">Monday Morning at Bob’s Java-Enabled House
  • ">Phrase-O-Matic
  • ">Code Magnets
    • ">BE the compiler
  • ">JavaCross 7.0
  • ">Pool Puzzle
  • ">Exercise Solutions
  • ">puzzle answers
• ">2. Classes and Objects: A Trip to Objectville
  • ">Chair Wars
    • ">(or How Objects Can Change Your Life)
    • ">In Larry’s cube
    • ">At Brad’s laptop at the cafe
    • ">Larry thought he’d nailed it. He could almost feel the rolled steel of the Aeron beneath his...
    • ">Back in Larry’s cube
    • ">At Brad’s laptop at the beach
    • ">Larry snuck in just moments ahead of Brad.
    • ">Back in Larry’s cube
    • ">At Brad’s laptop on his lawn chair at the Telluride Bluegrass Festival
    • ">So, Brad the OO guy got the chair and desk, right?
  • ">What about the Amoeba rotate()?
  • ">The suspense is killing me. Who got the chair and desk?
    • ">Brain Power
  • ">When you design a class, think about the objects that will be created from that class t ype. Think about:
  • ">What’s the difference between a class and an object?
    • ">A class is not an object.
  • ">Making your first object
  • ">Making and testing Movie objects
  • ">Quick! Get out of main!
    • ">The Guessing Game
  • ">Running the Guessing Game
  • ">There are no Dumb Questions
    • ">BE the compiler
  • ">Code Magnets
    • ">Pool Puzzle
  • ?">Exercise Solutions
  • ?">Puzzle Solutions
    • ?">Pool Puzzle
    • ?">Who am I?
• ?">3. Primitives And References: Know Your Variables
  • ?">Declaring a variable
    • ?">variables must have a type
    • ?">variables must have a name
  • ?">“I’d like a double mocha, no, make it an int.”
    • ?">Primitive Types
  • ?">You really don’t want to spill that...
  • ?">Back away from that keyword!
  • ?">Controlling your Dog object
  • ?">An object reference is just another variable value.
    • ?">The 3 steps of object declaration, creation and assignment
  • ?">There are no Dumb Questions
    • ?">Java Exposed
  • ?">Life on the garbage-collectible heap
    • ?">Life and death on the heap
    • ?">An array is like a tray of cups
    • ?">Arrays are objects too
    • ?">Make an array of Dogs
    • ?">Control your Dog
    • ?">What happens if the Dog is in a Dog array?
    • ?">A Dog example
    • ?">BE the compiler
    • ?">Code Magnets
  • ?">Pool Puzzle
  • ?">A Heap o’ Trouble
    • ?">The case of the pilfered references
  • ?">Exercise Solutions
  • ?">Puzzle Solutions
    • ?">The case of the pilfered references
• ?">4. methods use instance variables: How Objects Behave
  • ?">Remember: a class describes what an object knows and what an object does
    • ?">Can every object of that type have different method behavior?
    • ?">The size affects the bark
    • ?">You can send things to a method
  • ?">You can get things back from a method.
  • ?">You can send more than one thing to a method
    • ?">Calling a two-parameter method, and sending it two arguments.
  • ?">There are no Dumb Questions
    • ?">Reminder: Java cares about type!
  • ?">Cool things you can do with parameters and return types
  • ?">Encapsulation
    • ?">Do it or risk humiliation and ridicule.
    • ?">Hide the data
  • ?">Java Exposed
  • ?">Encapsulating the GoodDog class
    • ?">How do objects in an array behave?
  • ?">Declaring and initializing instance variables
  • ?">The difference between instance and local variables
  • ?">There are no Dumb Questions
  • ?">Comparing variables (primitives or references)
    • ?">BE the compiler
  • ?">Mixed Messages
  • ?">Pool Puzzle
    • ?">Fast Times in Stim-City
  • ?">Exercise Solutions
  • ?">Puzzle Solutions
• ?">5. Writing a Program: Extra-Strength Methods
  • ?">Let’s build a Battleship-style game: “Sink a Startup”
  • ?">First, a high-level design
  • ?">The “Simple Startup Game” a gentler introduction
  • ?">Developing a Class
  • ?">Brain Power
  • ?">SimpleStartup class
  • ?">Writing the method implementations
    • ?">let’s write the real method code now, and get this puppy working.
  • ?">Writing test code for the SimpleStartup class
  • ?">There are no Dumb Questions
  • ?">The checkYourself() method
  • ?">Just the new stuff
  • ?">There are no Dumb Questions
  • ?">Final code for SimpleStartup and SimpleStartupTester
  • ?">Prepcode for the SimpleStartupGame class
  • ?">The game’s main() method
  • ?">random() and getUserInput()
  • ?">One last class: GameHelper
    • ?">Let’s play
    • ?">What’s this? A bug ?
  • ?">More about for loops
    • ?">Regular (non-enhanced) for loops
  • ?">Trips through a loop
    • ?">Difference between for and while
  • ?">The enhanced for loop
  • ?">Casting primitives
    • ?">BE the JVM
  • ?">Code Magnets
  • ?">JavaCross
    • ?">Mixed Messages
  • ?">Exercise Solutions
    • ?">Puzzle Solutions