Java class inheritance, the procedure called by the parent class subclass method

1, the Mytank class inherits the tank, then the public part of Mytank inside is the common member and the method in Mytank can call and assignment, and do not have the new member variable in Mytank and the public member name in the tank, this will occur the call disorder, such as:

Tank Tank = new Mytank ();

int c = TANK.A;

If public a= 3 is in the tank class, and the new definition public A = 2 in the Mytank subclass, then the call in the above code will make C = 3, and a in the parent class.

Java class inheritance, the procedure called by the parent class subclass method