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Hyder This is the of the dodo.

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And welcome to another new chapter in this chapter.

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We will continue strengthening our language basics.

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Nice thing about this chapter is we will also for the first time look at an important design principle

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that is necessary for building well well-designed software which is our ultimate goal.

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So it's going to be some interesting stuff.

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Let's see what we are going to cover in this chapter

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we begin the chapter by looking at the July 8.

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We would also explore it on the article's website Gusterson API are arranged into something called package's

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So next we'll look at packages which provide meaningful organization of classes based on their functionality

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we will see how we can access classes and packages and also how we can create our own packages and also

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how we should name packages.

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And with regards to naming packages we will also look at some recommended naming conventions from one

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of the items in Effective Java next we will look at strings which basically represent text string manipulation

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is one of the most common activities in programming we will look at how strings are stored internally

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and we will also look at some performance implications which may need to be aware of when manipulating

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strings so it's going to be some pretty in-depth coverage just strings next we will look at access levels

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which are critical for writing well design software but the craft world is on software there are lots

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of design principles and people look at one of them called Information Hiding we will specifically look

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at a couple of very important effort of Didymus And as always we will also write some good best most

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of the stuff we are going to learn in this chapter.

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So that's up on the agenda.

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And these topics are nicely connected with each other.

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For example to understand access levels you need to know what packages are and you understand information

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hiding you need to know what access levels are so it's going to get interesting stuff.

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Let's go ahead and get started with the chapter