Head First computerescue.info Pages · · Hillbilly Elegy: A Memoir of a Family and Culture in Crisis Head First SQL is at the top of my stack. Heck, even. Head First Java covers a huge amount of practical matters that other texts leave as the “Kathy Head. Heck, even the PDF I have for review is tattered Head. Table of Contents What they're saying about Head First. Praise for other Head First books co-authored by Kathy and Bert. .. A very brief history of Java. This PDF is made available for personal use only during the relevant subscription.

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Head First Java covers a huge amount of practical matters that other texts leave A few days ago I received my copy of Head First Java by Kathy Sierra and Bert . Here is the link for downloading Head First Java 2nd Edition https://zimslifeintcs. computerescue.info This Repo contain Head First series eBook. Contribute to head_first_series_books/computerescue.info Find file Copy path. @ abhinavkorpal.

Declaring and initializing instance variables The difference between instance and local variables Comparing variables primitives or references 5. Writing a Program: A bug? A different game interaction More about for loops Regular non-enhanced for loops Trips through a loop Difference between for and while The enhanced for loop Casting primitives 6.

Using the Java Library In our last chapter, we left you with the cliff-hanger. How do we fix it? Inheritance and Polymorphism: Understanding Inheritance An inheritance example: Which methods should we override?

Head First Java

Looking for more inheritance opportunities Which method is called? Who gets the Porsche, who gets the porcelain?

When designing with inheritance, are you using or abusing? So what does all this inheritance really download you?

Inheritance lets you guarantee that all classes grouped under a certain supertype have all the methods that the supertype has. Interfaces and Abstract Classes: Serious Polymorphism Did we forget about something when we designed this?

Why not make a class generic enough to take anything?

Using polymorphic references of type Object has a price Making and Implementing the Pet interface 9. Constructors and Garbage Collection: If local variables live on the stack, where do instance variables live? How do you invoke a superclass constructor? Can the child exist before the parents? Superclass constructors with arguments Invoking one overloaded constructor from another Now we know how an object is born, but how long does an object live?

Head first Java.pdf

What about reference variables? Numbers and Statics: Static variable: Math methods Wrapping a primitive Before Java 5. Wrappers have static utility methods too! And now in reverse So much for numbers, what about dates? Exception Handling: I failed.

Ducking by declaring only delays the inevitable Getting back to our music code Using command-line args to experiment with sounds Getting GUI: Getting a user event Listeners, Sources, and Events Getting back to graphics We can paint graphics. But can we paint graphics when we get an event? GUI layouts: How do you get action events for two different buttons, when each button needs to do something different?

Head First Java.pdf

Inner class to the rescue! Using Swing: Different layout managers have different policies The Big Three layout managers: What needs to be saved? If you want your class to be serializable, implement Serializable Deserialization: Networking and Threads: Every Thread needs a job to do.

A method to put on the new thread stack To make a job for your thread, implement the Runnable interface The Thread Scheduler Putting a thread to sleep Using sleep to make our program more predictable Making and starting two threads What will happen? Um, yes. Make the increment method atomic. Synchronize it!

Collections and Generics: ArrayList is not the only collection You could use a TreeSet Or you could use the Collections. The Song class needs to implement Comparable The new, improved, comparable Song class We can sort the list, but The sorting all works, but now we have duplicates How a HashSet checks for duplicates: What could happen if it were allowed Wildcards to the rescue Alternate syntax for doing the same thing Package, Jars and Deployment: Release Your Code Deploying your application Imagine this scenario Packages prevent class name conflicts Preventing package name conflicts Compiling and running with packages The -d flag is even cooler than we said Making an executable JAR with packages So where did the manifest file go?

Java Web Start The. Remote Deployment with RMI: Head First really does teach the topics so that you'll remember them. Most into programming books give you an example and you work through it.

In Head First, yes there is an example, but the examinations happen via stories, diagrams, pictures, games and really good bad humor.

What this means is that no matter how you learn, you'll find something that helps the concepts stick. Each chapter builds upon the last and each chapter reinforces lessons from before. You can tell that people who really know how to teach designed these books.

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Now this book is basic. I personally didn't mind reading about Objects and Object-Oriented design yet again. I also didn't mind reading about polymorphism, encapsulation, et al.

The main reason for this is the presentation.I'm not so familiar with Java - in fact the last time I touched the language I could run to the local coffee shop, get a coffee, and get back to my program and it would just be starting up back in the dark days, when java was really slow. What needs to be saved? Also, the exchange of knowledge fill gaps and create a path for more in-depth learning. Interfaces and Abstract Classes: Inheritance and Polymorphism: But if you want to understand Java, this book's for you.

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