Unix + Java

[bobby reddy]

Hello everyone,
Could anyone let me know why Unix is used in combination with Java?

Thanks,
bobby

[Jeanne Boyarsky]

Bobby,
UNIX is an operating system. Java runs on an operating system. Java can run on UNIX (or Windows or Mac or Linux or ...)

[bobby reddy]

Hello Jeanne Boyarsky,
Whats the difference in the Java application that makes use of Unix or Windows operating system?
Can the same Java application work on two different OS?

bobby

[Matt Gaunt]

Hi Bobby,

A java application, once written and tested can be run on both a UNIX and Windows operating system. You do not have to alter the code for it to work for different environments.

Regards

Matt Gaunt

[fred rosenberger]

There are some caveats to that. it is certainly possible to write some java code that IS system dependent, but this usually means you've used some non-standard classes/packages.

You can also write your java to make system calls (i.e. call a program that the OS runs... i.e. on windows, you could call 'dir' to list the files) which would not work across platforms.

[marc weber]

Originally posted by bobby reddy:
...Can the same Java application work on two different OS? ...

Absolutely. This is the idea behind compile once and run anywhere.

The thing is: The different platforms must be running their own (OS-specific) Java Virtual Machine (JVM). This is what allows the same compiled bytecode to run on different platforms. As pointed out, JVMs can run on Windows, Mac, Linux...

[camilo lopes]

for examples:
Delphi not run in all operation system. Today he give support there are some system as a unix.
Java run independent of the plataform that you use. can be unix, mac, windows. not is necessary move one line of the code for this.