java

Java is not a fully object oriented language because it does not support multiple inheritance directly.But it does so by using theconcept of interfaces.

A language is said to be fully object oriented if it supports classes,objects,inheritance and polymorphism.For example C++ supports full fledged feature of inheritance and all the types of inheritances(single,multilevel,multiple,hierarchical and multipath inheritances), and if we take the polymorphism C++supports static binding and operator overloading which come under static polymorphism where as Java does not support operator overloading.
We cannot say Java as an Object based language because it supports Inheritance and polymorphism to some extent. Where as in object based languages there are classes and objects but no inheritance and polymorphism.