Headfirst

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Head First Java combines puzzles, strong visuals, mysteries, and soul-searching interviews with famous Java objects to engage you in many different ways. It's fast, it's fun, and it's effective. And, despite its playful appearance, Head First Java is serious stuff: a complete introduction to object-oriented programming and Java. You'll learn everything from the fundamentals to advanced topics, including threads, network sockets, and distributed programming with RMI.

And the new. Because Java 5. So learning the Head First way is more important than ever. If you've read a Head First book, you know what to expect--a visually rich format designed for the way your brain works.

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If you haven't, you're in for a treat. You'll see why people say it's unlike any other Java book you've ever read. By exploiting how your brain works, Head First Java compresses the time it takes to learn and retain--complex information. Its unique approach not only shows you what you need to know about Java syntax, it teaches you to think like a Java programmer.

If you want to be bored, buy some other book. But if you want to understand Java, this book's for you. Stay ahead with the world's most comprehensive technology and business learning platform. With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more. Start Free Trial No credit card required. View table of contents.

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Start reading. Book Description Learning a complex new language is no easy task especially when it s an object-oriented computer programming language like Java. Who should probably back away from this book?


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Looping and looping and He could almost feel the rolled steel of the Aeron beneath his But wait! What about the Amoeba rotate? The suspense is killing me. Who got the chair? When you design a class, think about the objects that will be created from that class type. Think about Things an object knows about itself are called Things an object can do are called A class is not an object.

Get out of main! Back away from that keyword! Control your Dog with a reference variable What happens if the Dog is in a Dog array?

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A Dog example 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? Immediately after the second ladder is the rabbit hole or birthing canal named for its constant moisture and the necessity to go down head-first.

Once subdued, the prey is maneuvered to the mouth with rippling motions of the disc and swallowed whole, head-first. Fortunately, quick thinking mechanics dunked him head-first into a tank of soda solution. Parros lost his balance and fell headfirst to the ice, he was taken off on a stretcher with a concussion. He is a formidable hand-to-hand combatant whose most dangerous tactic is charging head-first like a bull toward an opponent.

Head First Java, 2nd Edition [Book]

Lusk was ejected head-first and sustained severe brain damage. She has a childish personality and lots of energy, and likes to jump headfirst into danger. It has semiretractable claws and flexible ankles that allow it to climb up and down trees head-first, and also support jumping from tree to tree.

If approached, the fish will quickly dive into their constructed retreats, often head-first.


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  8. The sea mouse normally lies buried head-first in the sand. He landed headfirst on the other side of the fence.

    But what if you need to share several sets of behavior across several classes? Like methods for starting a battery charge cycle and reporting its charge level—you might need those methods on phones, power drills, and electric cars. Are you going to create a single superclass for all of those?

    Or methods for starting and stopping a motor. The Ruby core library includes two mixins that will blow your mind. The first, Comparable , is used for comparing objects. The second mixin, Enumerable , is used for working with collections. Those came from Enumerable. And again, you can mix it into your classes.

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    Read on to see how! Teach them how to fish, and you feed them for a lifetime. You just have to know where to find it, and how to interpret it. In the real world, the unexpected happens.

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    Someone could delete the file your program is trying to load, or the server your program is trying to contact could go down. Your code could check for these exceptional situations, but those checks would be mixed in with the code that handles normal operation. And that would be a big, unreadable mess. Are you sure your software is working right now? Really sure? Before you sent that new version to your users, you presumably tried out the new features to ensure they all worked. All the old features? If that question makes you uneasy, your program needs automated testing.

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