Is java completly object-oriented?

Java is purely object oriented.I can explain that with a comparison between a java code and a C++ code.C++ is not purely object oriented.
Partially object oriented means the code works with out a "class" in the code.You can use classes but its not a must.eg. C++ codes

#include<iostream.h>;
#include<conio.h>;
void main()
{//No class definitions in this C++ code but it will run.
cout&lt;&lt;&quot;hello&quot;;
getch();
}</conio.h></iostream.h>

But purely object oriented means with out a class definition the program wont run.eg.Java code

Public class techarena{ /*class defintion is a must and the file should me named
public classname with .java extension.in this eg. "techarena.java" */
public static void main(String args[])
{
System.out.println("hello");
}
}