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Java was development by Sun Microsystems and released in 1995.

Currently java is owned by Oracle

More than 3 billion devices run java

Java script is high-level, robust, object-oriented and secure programing langusage.

Some java key words

1 class

2 if

3 int

4 for

5 final

6 string

7 catch

8 extent

9 implement

Java comments;

1 single comments

It starts with two forward slashes (//).

NB: Any text between// and the end of the line is ignored by java (will not be executed)

E.g //this is a comment

System.out.printin("Hello World");

2. Multi-line comments:

It starts with /* and ends with */.

NB; Any text between /* and */ will be ignored by java.

E.g /* The code bellow will print the words Hello World to the screen, and it is amazing */

System.out.printin("hello world");

Java variables;

variables are containers that stores data values.

The 3 Types of variables;

1 local variable

2 instance variable

3 static variable