why Object class doesn't have any super class?

If in java every class must extend one class, then the java.lang.Object is also a java class and hence the question is does it have any Super class ? If not why?

I don't know the actual answer but i think it has to stop at some place, say if Object class had a super class you would ask why this super class of Object class doesn't have another super class and the cycle would go on and on.

Secondly there are certain things which we have accept the way they are made by the people who made Java and lastly being an OOP language i think Object class being the top class is well justified.

And welcome to Ranch!!!

If in java every class must extend one class

Not a good sense, but true as Object class is parent for explicitly non-extending classes.

Object class was provided for basing functionalities that is required by every class that we create for running in JVM, identification, etc [Look at the methods]. So other classes by default extend it.
Now, for that matter, the basic functionalities are already in Object class, so why would it require to extend any other class!

The Object class is at the topmost position in the hierarchy, until the JVM is revisioned for toppling that decision.

You create "something" out of nothing. Things A, B and C were introduced following your something, so they extend it. Why should your "something" thats born out of nothing should extend "something else".

You've got to have something at the top of the inheritance tree, otherwise you'd have an infinite number of classes.

The java.lang.Object class was designed to be the very top of the inheritance tree for everything. Look what it says in the link (second word in this post).

Soumya Ranjan Padhi wrote:If in java every class must extend one class

But that is clearly not true, since the Object class does not, so the rest of your question is meaningless.

fred rosenberger wrote:But that is clearly not true, since the Object class does not, so the rest of your question is meaningless.

Ah, syllogism; don't you love it?

Winston

Object class extends from itself :p

Jayesh A Lalwani wrote:Object class extends from itself :p

have a look at this, too.

Unless you know something I don’t, like today being 1st April rather than 31st October, please stop that sort of joke. The newbies will believe you.