Why one can't extend more than one class

[Rajesh Thorat]

Let's say we have a scenario like, a class 'A' is extended by two classes 'B' and 'C'.
Now, class 'D' extends class 'B' and want's to access class 'C'.
Here, we'll get an error here or we'll not allowed to do so.
Now, my query is, whenever 'D' wants to extend 'C', it must check whether 'B' and 'C' are having same base class or not.
If 'B' and 'C' are not derived from same base class, then 'D' must allowed to extend two classes at a time.

[Henry Wong]

Just do a search for multiple inheritance. This question has been asked many times.

Henry

[Rajesh Thorat]

Henry Wong wrote:
Just do a search for multiple inheritance. This question has been asked many times.

Henry

I know why we can't extend. But the thing is can Developers who developed java design it in such a way, that ,
Class 'D' can allowed to extend more than one classes, provided the classes which it going to extend should not share a same
Base class.

[David Newton]

A Java class can extend a single class, period.

[Campbell Ritchie]

Rajesh Thorat wrote: . . . provided the classes which it going to extend should not share a same Base class.

Apart from "base class" being a C# term, rather than a Java term (we say superclass), all Java classes share the same superclass, viz java.lang.Object.