Lazy initialization is a common programming technique that delays object creation until it is needed for the first time. This normally causes the initialization of the objects to be made in the implementation of the operations, instead of the constructor of the classes. The main advantage of this technique is that you can save memory. This is because you only create the indispensable objects needed for the execution of your applications. You could have declared a lot of objects in one class, but you don't use every object in every execution of your program; therefore, your application doesn't use the memory needed for the objects that you don't use in an execution of the program. This advantage can be very useful for applications that run in environments with limited resources.
By contrast, this technique has the disadvantage of having performance issues...
