Making a Simple Java File.

1 Open text editor like notepad and type..
* java is a case sensitive language. (type in notepad as shown as bellow(Capital Simple Letters))

Then save your java file in hard disk named myFristJava.java  (Ex: c:\java\myFristJava.java)


2 Open Command Prompt in your computer by (start->run  and typing cmd) or (start->all programs accessories->Command Prompt)

Type in cmd .....


                         path=c:\program files\jdk1.7\bin  (this path must be the path of jdk installed on  your computer. )

Now compiler is ready to compile your java file.


then type on cmd...

                                                               
your java file's saved file path (Ex: cd java)for c:\java
                       javac myFristJava.java                 

This command line arg tells java compiler to compile the myFristJava.java file in c:\java folder.


                        java myFristJava            

This line tells to jvm(Java Virtual Machine) to run your java program.




         If correctly compiled and run, prints  Hellow. My name is saman. in the command prompt.

Java Lessons.

Java is a high-level and powerful Computer programming language.


* Java is used by  many websites, business softwares and other application softwares.
* Java is not a platform independent computer programming language.


Ex:- There is a java .class file compiled on windows operating system. that .class file run on all widows operating systems and also run on java supported any other operating systems like linux, ubuntu OSs.