如果你想使用一个数组，你必须保持它包含的汽车在车库里数的计数器。更好地使用的ArrayList 而不是数组：

 列表＆LT;汽车＆GT;车库=新的ArrayList＆LT;汽车＆GT;（）;
garage.add（雷德卡）;
 

Im a beginner to Java and I'm trying to create an array of a custom class. Let say I have a class called car and I want to create an array of cars called Garage. How can I add each car to the garage? This is what I've got:

car redCar = new Car("Red");
car Garage [] = new Car [100];
Garage[0] = redCar;

If you want to use an array, you have to keep a counter which contains the number of cars in the garage. Better use an ArrayList instead of array:

List<Car> garage = new ArrayList<Car>();
garage.add(redCar);