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Not see how we can refactor source code using Eclipse refactoring is nothing but restructuring of source

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code so that it looks much more cleaner and modular and it should not affect the external behavior of

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the source core.

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OK so let's just go out and do some refactoring here in our student test class.

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So if you recall we have this student Ari and the size of the arrays for.

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So this has been hardcoded such hard coding is not good.

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So let's just go ahead and refactor this.

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So let's just collect this going to refactor here and say extract local variable and just name the local

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variable as let's say student count

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and you can see that the student count variable has been auto created uninitialized with 4.

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And you can see the student count variable being used here.

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OK now you can do that or you can also do a right click here and you can go in Gouri factor here and

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then do the same thing.

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Extract local variable.

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Now let's just go ahead.

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And another thing that you can do as.

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Change back to 4.

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So let me go here.

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Reflektor let's say ex-black constant earlier it was X-type local variable.

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Now let's name it as since it's a constant let's name it a student underscore Gaunt's don't know when

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you do this it's going to create student content has a global variable here and initialize it at four

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.

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So that's how you do it.

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And let's say we want to move this code into a separate method.

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This bent method.

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So let's just highlight the bar code that we want to move.

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And once again right click going to refactor and say extract extract method.

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So just give them a third name as print name and gender.

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And it has two parameters name and gender.

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So let's just go ahead and hit.

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OK.

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And you can see the method in location here.

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And if you go down you can see the method.

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It has two parameters name and gender and this system Redmond's been don't Prindle and statements have

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been moved into the method now.

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So that's it.

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So that's extracting local variable extracting constant and extracting methods and you can do it from

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either from here or but I clicking on those items and that's it