单例设计模式和多例

Posted 2022-04-22 hengzhezou

 1 public class Car 
 2     private static Car car = new Car();
 3     /**
 4      *  多例,getInstance()取出里面一个,（jdbc,连接池）
 5         private static List<Car> cars = new ArrayList<Car>();
 6      */
 7     private Car() 
 8     public static Car getInstance() 
 9         return car;
10     
11