Creating class in java (android) with a variable name

Question

I have a program for Android with few classes. In my MainActivity i am using those classes. For example i have this class named Car. and so in my main activity i put this code to make a new "car" object.

Car car = new Car();

Now i also have a variable called count. that always increment by one. I want My main activity to create class every time (count%10 == 0). with a name like that car10,car20,car30. The number changer as the counter changes too. I did something like that and got stuck:

for(int i=0;i<100; i++)
{
if(i%10 == 0)
{
Car car+i = new Car();
}

}

but it didn't work. Any Idea?

possible duplicate of Assigning variables with dynamic names in Java — T.J. Crowder
– T.J. Crowder, Commented Apr 3, 2014 at 12:26
It's not the class that has a variable name, it's the variable. — T.J. Crowder
– T.J. Crowder, Commented Apr 3, 2014 at 12:27

laalto · Accepted Answer · 2014-04-03 12:24:57Z

1

In Java you cannot have variable variable names.

Consider using an array or a list. For example:

List<Car> list = new ArrayList<Car>();

// ...

list.add(new Car());

or if you need to name the indices, use a map:

Map<String, Car> map = new HashMap<String, Car>();

// ...

map.put("car" + i, new Car());

answered Apr 3, 2014 at 12:24

laalto

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1 Comment

HakoStan Over a year ago

Hey, hmm i have another class called Stop. and his parameters are (Car car) how do i get the car class name in it? from the map. cuz i can't use string. i need to use a variable that his type is Car

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