CODEWITHSUNDEEP
javaarrays
user2999509
user2999509

Reputation: 107

Creating multiple instances of a class in java

Right so i have got this class called PlaneSeat,

the constructor in another class called PlaneSeat is 

public PlaneSeat (int seat_id){ 
        this.seatId = seat_id;

}

1) I wish to create 12 instances of this class with each PlaneSeat having a seatID of 1-12

Should i do this: (I dont know what this does) 

private int PlaneSeat;
PlaneSeat [] seats = new PlaneSeat[12];

or (I dont know what this does either)

private int PlaneSeat[] = { 1,2,3,4,5,6,7,8,9,10,11,12};

Which one is better and what does what?

2) Also, if i have another class where the main is found and i wish to access the seat ID of each seat on the plane, how should i do it? 

jet1.getSeatID // doesnt work where jet1 is a instance of a plane

Upvotes: 1

Views: 14710

Answers (1)

blueygh2
blueygh2

Reputation: 1538

2) To access seatID, you need an accessor (normally called getSeatID()) in the PlaneSeat class.

public int getSeatID () {
 return seatID;
}

1) private int PlaneSeat; PlaneSeat [] seats = new PlaneSeat[12]; You don't need to declare private int PlaneSeat, which doesn't actually make sense. Should be private PlaneSeat seat; or something... PlaneSeat[] seats = new PlaneSeat[12]; creates a new array of PlaneSeat objects with a size of 12. 

private int PlaneSeat[] = { 1,2,3,4,5,6,7,8,9,10,11,12};

Again, this should be private PlaneSeat[] seats;

To create your seats, you would first declare your seat array 

PlanetSeat[] seats = new PlaneSeat[12];

Then you can use a loop to fill the seats:

for (int i = 1; i <= 12; i++) {
 seats[i-1] = new PlaneSeat(i);
}

Upvotes: 1

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