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Save initial choice

hi it's me again Jerry on today's episode we try to give example you see the concept of interface coordinates ok we work on this problem we're going to design a school up that handles school records when we say school records it may be employees it may be students and we need to display the initial thoughts of students and even instructor instructor is an employee at the start of academic year so the idea here is they have two identical methods but they perform differently when executed this would be my concept of how we're going to execute our application school app will will be associated with school record but school record the snack really effects tool app it's the school up who uses school record and in the case of student and instructor they will share a common method which is being read school initial thoughts and show funny case or instructor and student are two separate objects but they uses an interface and implements the interface person which has two methods get initial gets full initial thoughts and so fun student and instructor also have a common ID and name so by the end of the application the application can show student initial thoughts and idea of fun and the same time it is adjustable where in you could also show the idea of fun and the initial thoughts of an instructor at the start okay let us start let's use eclipse so this is the same workspace that we have created we just launched it ok so here you could see the name of our project which is Victoria it has nothing on it except the default now the first thing that we need to do so the next thing the first thing that we need to do is to design this wreath our object on our application unders you click spring tutorial right click it new okay so I'm going to name my package as calm co m dot the name of calm is the domain name extension could be a dupe for education or for organization or a simply calm website that we could see Jerry Esperanza is the name of a company and school up his the name of the application and domain is the domain object the name of the package where Kareem we stored our domain objects this is the typical of chat half of nating work packages but that the thing that you need to understand to avoid conflict with the name of different Java objects you use all domain you use all the letters in smaller let us finish this one okay so first thing we need to plot is the person new instead of class we use interface take this one as far as we remember on our discussion of the terrifical ax aspect of interface interface does not have an implementation body it is just a declaration saying that the student and the instructor will use this person very if consists of two methods that needs to be executed you say make so we're done doing the the interface now we create the two objects coudn't and so from your package word package okay you right-click again new this time it is a class but our student class is going to use an interface so you need to click this add and from here you need to choose an interface the interface for that would be first of this type person everything's okay you click Add it so it's already there Victini okay so if you get an arrow like this never mind just save this first so you won't see we ever coming out here you would see automatically that the two methods that we have declared a person interface type were included here in these student objects since we need to say what would be the initial thoughts of a student at the startup school year that we remove this comment let us say he is very excited friends and the idea of fun let us say Hey so we're done with the student object now we do the instructor you [Music] let's save it so so far we are through with the three objects next on our list is to plot the school record so our school record consists of an ID and a name how do we do that I did name and a person in the person so we generate the setters and getters source generate getters and setters like all and so we're done doing the school record now we do our school app [Music] under school app we'll go to separate this to another package so let us say I click new [Music] visually new athletes okay now we create the object for school app that will instantiate all of them make the public static void name so you will no longer type this one okay so we remove this one okay so the game plan here is I will create object i will create object of my choice a school-record object put data we will record paint data in school so this would be our step-by-step on how to apply still have on my first pass i will create the object of my choice let us say i say here student there is an error here so just hope ur your mouse here because cannot see the student object cause it's located on other package you just hover your mouse and import student hey Jerry how do we apply the concept of interface so we could say here a student is a present let us say we put here person has a student the person is not present so include that also import person so we're saying here that a choice of my object of a person is a student that is why I put here student or okay or I would say the t spirt song of choice is just employed person and that person is a student we're done with that then we create a school record do we do that record you name this one record okay so you notice I the red indicator always comes up because it always looked for for this record so since we need everything on this package you might as well delete this item and just say that you need to include all so you just put a space so everything that is stored here will be included on this application so we're done with this one now we put beta on the record over my object of choice for now is a student so I will put the data in student I will say five set ID I would say here one two three four the ID the name said name and the name would be John and the person would be record set person and that person would be a person it is the student right and now I need to print the record and what is that I will say here this out control space okay the ID card I need to get the ID is out control space so how do we get the initial thought so the first thing you need to do is to get the person after that person s get initial the same we do on Chopin okay so this would be our program looks good to me let us save it and run as java application this would be our output okay what if I change this to a constructor so this is the initial thoughts of a student what if I change this to instructor save this one run it so you have the thoughts of an instructor for this one