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Lets assume i have 2 totally different user-defined classes A and B.
A a = new A();
B b = new B();
. . .
. . .
a = (A) b; //I'm pretty sure this raises a ClassCastException, but how to deal with this issue?
You can’t, unless B derives from A.
That’s the point of a ClassCastException.
But since A and B are totally different, why would you want to convert them in the first place?