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This solution is going to cover tasks one to four from part two, this part is exciting because we get

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to revisit 2D arrays and nested loops and the vending machine is identified by the items that it manages.

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And it has one action dispensing an item.

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And since the items are arranged in rows right there, we know that the field needs to be a tutelary.

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So add the items field to the machine class.

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And as always, if your class has fields, you need to apply the big three steps, we need a constructor,

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a getter and a setter.

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The constructor is public, as always, shares the same name as the class.

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And it's going to receive as many parameters as there are fields, so one, a 2D array of items whose

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values we're going to copy into the items field.

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So first, we need to set the field equal to a new 2D array.

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Remember that the first bracket is the number of rose, the items field is going to have the same number

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of rose as the items parameter.

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And the second bracket refers to the number of elements in each row, you can pick any row from the

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items parameter.

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It doesn't matter which row, they all have the same number of elements.

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So I'm going to zero zero.

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And we'll get the length of Rosero.

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OK, now we need to run through every object in the items parameter we can use for eye to autocomplete,

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the outer loop.

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And this loop is going to run through every row and the items parameter, where is the Arrow Index and

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once again we can use for it to complete the inner loop.

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But be careful as the outer loop runs through every row eye, the inner loop needs to run through every

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element in that row.

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I.

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Inside the inner loop, the euro index is going to be fixed to a row while the Innaloo counterplay j

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index is a specific element in that euro.

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And we're going to set every element I and spot J equal to a new items copy of every element in the

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items parameter at eye and spot J.

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And that's really the constructor is going to update every element in the items field with an object

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from the items parameter.

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Next, we want to get her.

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I receives two parameters, the row.

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And the spot within that row.

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And this letter is going to return.

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A new item copy of the object.

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At the request that spot inside the row, that was Pastan.

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All right, that's all.

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Next, we want to add a Seder that receives three parameters.

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An item object that you're going to use to update one of your elements, the row and spot of the object

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that you want to update.

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All right, then, we're going to end next the object at the requested spot inside the row.

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And set it equal to a new copy of the object being passed in.

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And not so I think we're ready to test our code.

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Inside men, Alan, comment, the items are Ray.

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Then I'll create a new object of the machine class.

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And I'll pass in the array to the constructor.

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And let's say I want to get this object.

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I'm going to use the GETER to get the object I wrote to.

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And one of the items field.

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Then I'm going to print that object directly.

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Run the code.

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And perfect, the constructor works because it clearly populated the items field with every item object

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and the getter works as well.

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Last thing I want to do is test the setar, so before putting the object at row and spot one, I'm going

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to change the price of that same object.

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So I'll store this in a variable.

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Change its price, so we'll call the set price.

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Then I'm going to call machine that said item with the new item we just updated.

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Row two and spot one in.

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All right, let's run the code.

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I'm anticipating that the updated items would have a price of two ninety nine.

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And this output, I can confirm that the constructor getter and setter are all working as they should.

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I hope you were able to follow along if you were having trouble with the concept of two.

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I encourage you to revisit the array section in Module one.

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We cover 2D arrays and nested loops in a lot of detail.

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But if you're comfortable with what we did so far, then we're going to implement tasks five to seven

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in the next video.