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Before we start, did you try solving the workbook yourself?

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If not, please click the link in the resources folder and follow the instructions for this workbook.

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Welcome to Workbook 7.2.

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The way we have it right now is as soon as we create an object of the person class, then we update

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all of that object as fields.

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That is a bit messy.

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What we want to do is call a constructor that updates the fields as soon as we create the object.

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So task one is to create a person constructor that receives four parameters.

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For now, we ignore the passport.

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So here we're going to create a new constructor that gets called whenever we create a person object.

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That constructor is going to receive four parameters during object creation.

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So the name it's going to receive a nationality.

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It will receive a date of birth.

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As well as a seat number.

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For now, we ignore the passport.

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D This keyword means the current object and what we can do is access the field of the current object

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and set it equal to the parameter that gets passed in.

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So we'll do that for the name.

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We will set the nationality field of that object equal to the nationality parameter.

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We will set the date of birth field equal to the date of birth parameter, and we can set the seat number

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field equal to the seat number parameter.

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All right.

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And now, as soon as we create an object of the person class, in order to invoke this constructor,

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we need to pass in the correct number of arguments.

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So we need to pass in a name, nationality, date of birth, and seat number.

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We will use the same values we're using over here.

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For now, we're ignoring the passport and we're just going to assign this person a seat.

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Number of five.

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All right.

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I think I did task one.

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And task to task three is to print every field as part of one string so we can just copy this over.

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How convenient.

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Here, I will print that person's name.

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Here, I will print that person's nationality.

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Here.

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I will print their date of birth.

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And here we can print their seat number.

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Okay.

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I think we're all done.

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We should be ready to visualize the run time.

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Let's do just that.

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I'm just going to put one breakpoint over here.

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And that's it.

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So here what we're doing is we're creating a new object of the person class.

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And as soon as we create the object, the constructor is going to get called.

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And what the constructor is going to do is set every single field inside of the current object that's

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being created equal to a parameter that gets passed in.

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So here we set the name field of the current object equal to Ray and Slim.

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Here we set the nationality field of the current object equal to Canadian.

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Here.

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We set the date of birth field of the current object equal to the date of birth that gets passed in

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11111.

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Here we set the seat number field of the current object equal to the seat number that gets passed in.

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All right.

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Now that we've initialized the current object.

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The person variable stores a reference to that object.

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And here we're printing all of the fields that belong to this object.