Keeping Code Grounded in a Sea of Variables Class constants are similar to regular constants with the exception that they live inside the class. Class constants cannot be changed, hence the name constant. They’re declared using the const keyword and are allocated in memory once per class and not each time that you instantiate the object; this is what’s meant when you hear that constants live within the class. They resemble static variables in that sense, but static variables can be modified. To access the class constant, you need to use the class name and the scope resolution operator (double colon). Constants do not