Java was first created in 1991 under the name Oak and was officially announced in 1995 by Sun Microsystems. Sun Microsystems first released Java and its compiler in November 2006 and later released additional tools like bookcases in May 2007. The document then provides examples of basic Java programming concepts like variables, methods, and classes to explain object-oriented programming in Java.

1. Java was born in 1991 and at the beginning its name was Oak. Java was announced in 23 May 1995 on Sun World. On 13 November 2006 Sun Microsystems released it and the Java compiler. On 8 May 2007 SUN released bookcases too. HISTORY

3. PROGRAMMING TO OBJECT In programming to objects, OOP, as building an object and recalling the name of the class that will contain all variables of request and the methods of the class. To create an object, you need to create a costructor in the class, that can be, for instance, the class’s variables. Example: public class ex{ private int height; public ex(int n){ height=n; } Private is the visibility level,the others are: public,protected,package.