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Message:

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Posted by gfhgghjhjjjnh gjhjgfjdjgjgfjgjd on November 27, 2000 at 2:05 PM

> Hi
> 1. I suppose you have installed JDK ( Java Development kit ) on your
> computer. If you don't have java installed on you system then visit www.java.sun.com and download the free version of latest java1.3 and install it.
> 2. I suppose c:\jdk1.3 is the home directory in which you have installed your java software. Now you can include c:\jdk1.3\bin in your PATH environment variable ( I assume you are using windows ) in autoexec.bat file. It is not necessary but it will save you typing some extra words everytime you compile and run your java program.

> 3. NOw you are ready to write a java program which you can compile and run. If you have a java editor then open it. If you need one I will mail it to you. If you don't have java editor then you can open notepad and type the following.

> class Hello {
> public static void main ( String[] args ) {
> System.out.println ( "Hello java!!!" ) ;
> }
> }

> 4. Please type exactly as shown in step3. Java is case sensitive. If you type system instead of System ( note uppercase 'S' ) then your program won't compile.
> 5. Save the notepad file as Hello.java . Now you have to take extra care. Here the file name has to be Hello.java ( note uppercase 'H' ) and if you just type Hello.java when prompted to save a file in notepad then it will save it as Hello.java.txt . So in save file dialog when you say File -> Save in notepad then type the file within double quotes. So instead of typing the file name as Hello.java, please type "Hello.java" and when you type a file name in double quotes then .txt is not appended by notepad. I suppose you saved you Hello.java in c:\myjava directory.

> 6. Now go to DOS-prompt and change your current directory to your myjava directory. So your dos prompt will look like as foillows.
> C:\myjava>

> 7. Now you can type javac Hello.java on command line as follows
> C:\myjava>javac Hello.java
> Please note that even file name Hello.java is case sensitive for java. You cannot type hello.java or HEllo.Java. If you havn't included c:\jdk1.3 in PATH variable then please type as follows
> c:\myjava>c:\jdk1.3\bin\javac Hello.java

> 8. After pressing enter in STEP 7 , you will get the command line again like
> c:\myjava> if everything went well. At this time you can have your java program compiled and java compiler has created a new file Hello.class . Now you have to run the program
> 9. On Command line type as follows
> C:\myjava>java Hello
> Here you don't have to type Hello.java or Hello.class, You have to type just Hello the name of the class which we created in out program. You can also type c:\myjava> c:\jdk1.3\bin\java Hello

> 10. We use javac to compile a java program using .java file name and java to run a java progran using the class name ( in our case Hello ) .

> 11. If you need more help. Just post a question or write to kishori_sharan@yahoo.com

> Thanx
> Kishori