Author Topic: Does Java work on all computers? (Read 7889 times)

Hot_Dog · « **on:** December 17, 2010, 04:12:42 pm »

If a Java program is translated into "Java Byte Code," is it guranteed to run on Windows, Mac and Linux as long as they have java installed?

nemo · « **Reply #1 on:** December 17, 2010, 04:14:23 pm »

if they have the JVM (java), then yes.

DJ Omnimaga · « **Reply #2 on:** December 17, 2010, 04:36:01 pm »

It should, except I noticed sometimes that even after installing Java, sometimes some browsers will still think it's not installed.

calcdude84se · « **Reply #3 on:** December 17, 2010, 04:37:34 pm »

Quote from: DJ Omnimaga on December 17, 2010, 04:36:01 pm

It should, except I noticed sometimes that even after installing Java, sometimes some browsers will still think it's not installed.

Even if you make sure to select for it to install the correct browser plug-in and then you restart? What browser is this?
And yeah, it should work on any computer with a JVM installed

DJ Omnimaga · « **Reply #4 on:** December 17, 2010, 06:16:42 pm »

It eventually worked after 2 or 3 restarts. It was IE and Opera. It happens often, though, when first installing Java..

jnesselr · « **Reply #5 on:** December 17, 2010, 07:18:14 pm »

Quote from: Hot_Dog on December 17, 2010, 04:12:42 pm

If a Java program is translated into "Java Byte Code," is it guranteed to run on Windows, Mac and Linux as long as they have java installed?

Not necessarily. You have to make sure you are using routines that are not deprecated, or provide some sort of version check. You also have to make sure any native libraries are compiled to the correct architecture and installed. And you have to make sure that any libraries and functions you use are available to all systems.

DJ Omnimaga · « **Reply #6 on:** December 17, 2010, 08:17:55 pm »

Would the program have to be updated regularly forever to maintain compatibiility? I remember PJIRC, for example, stopped working completely during about 3 versions of Java, then it started working again 4 versions later.

Jonius7 · « **Reply #7 on:** December 17, 2010, 10:00:22 pm »

I just updated my java to 6r23. it works fine in browsers however there are problems for me when i run .jar files (runtime). I can run them, but only after a massive amount of tweaking with cmd. I dunno why i have this since everyone else seems to be able to run them directly by double-clicking. but as for the java in browsers it should work.

jnesselr · « **Reply #8 on:** December 17, 2010, 10:41:04 pm »

Quote from: jhgenius01 on December 17, 2010, 10:00:22 pm

I just updated my java to 6r23. it works fine in browsers however there are problems for me when i run .jar files (runtime). I can run them, but only after a massive amount of tweaking with cmd. I dunno why i have this since everyone else seems to be able to run them directly by double-clicking. but as for the java in browsers it should work.

Try just adding -d32. Unless you are on a 64 bit processor?

Quote from: DJ Omnimaga on December 17, 2010, 08:17:55 pm

Would the program have to be updated regularly forever to maintain compatibiility? I remember PJIRC, for example, stopped working completely during about 3 versions of Java, then it started working again 4 versions later.

No, not necessarily. What I said was mostly referring to packages that have not been adopted to the java standard (Don't want to explain that. It's basically like making the package "official", and having it be released with any new updates). E.G. 3rd party packages and such.

Jonius7 · « **Reply #9 on:** December 17, 2010, 10:44:52 pm »

to the jar file or java.exe

jnesselr · « **Reply #10 on:** December 17, 2010, 10:45:28 pm »

Quote from: jhgenius01 on December 17, 2010, 10:44:52 pm

to the jar file or java.exe

Jar file. Also, are you 32 bit or 64 bit user? what OS?

DJ Omnimaga · « **Reply #11 on:** December 18, 2010, 12:21:50 am »

Quote from: graphmastur on December 17, 2010, 10:41:04 pm

Quote from: jhgenius01 on December 17, 2010, 10:00:22 pm
I just updated my java to 6r23. it works fine in browsers however there are problems for me when i run .jar files (runtime). I can run them, but only after a massive amount of tweaking with cmd. I dunno why i have this since everyone else seems to be able to run them directly by double-clicking. but as for the java in browsers it should work.
Try just adding -d32. Unless you are on a 64 bit processor?
Quote from: DJ Omnimaga on December 17, 2010, 08:17:55 pm
Would the program have to be updated regularly forever to maintain compatibiility? I remember PJIRC, for example, stopped working completely during about 3 versions of Java, then it started working again 4 versions later.
No, not necessarily. What I said was mostly referring to packages that have not been adopted to the java standard (Don't want to explain that. It's basically like making the package "official", and having it be released with any new updates). E.G. 3rd party packages and such.

Ah ok thanks for the info.

Munchor · « **Reply #12 on:** December 23, 2010, 04:58:50 pm »

I believe that .jar files do work in all platforms.

However, if converted to .exe, they won't anymore since .exe is for Windows

EDIT: Afterall, that's what Java is famous for: compatibility and portability

jnesselr · « **Reply #13 on:** December 23, 2010, 08:33:24 pm »

Quote from: ScoutDavid on December 23, 2010, 04:58:50 pm

I believe that .jar files do work in all platforms.

However, if converted to .exe, they won't anymore since .exe is for Windows

EDIT: Afterall, that's what Java is famous for: compatibility and portability

Java will work as all the JRE is there (Java Runtime Environment). Also, all methods for systems classes must be supported and not deprecated.

Binder News · « **Reply #14 on:** December 23, 2010, 09:00:21 pm »

A while ago, I managed to mess up Java on my computer. I got it working again, but we are stuck at version 1.6.2 (or is it just 6.2). Anyways, you can never assume that someone has the latest version of the JRE installed. My grandparents don't use their internet much, and so use DIAL-UP!!!!! I have no idea what version of the JRE they have, but it probably isn't up-to-date. I recommend using Java 5, as most of the common apis didn't change from 5 to 6, and there is a better likelihood of a user having at least v5.

Author Topic: Does Java work on all computers? (Read 7889 times)

Hot_Dog

Does Java work on all computers?

nemo

Re: Does Java work on all computers?

DJ Omnimaga

Re: Does Java work on all computers?

calcdude84se

Re: Does Java work on all computers?

DJ Omnimaga

Re: Does Java work on all computers?

jnesselr

Re: Does Java work on all computers?

DJ Omnimaga

Re: Does Java work on all computers?

Jonius7

Re: Does Java work on all computers?

jnesselr

Re: Does Java work on all computers?

Jonius7

Re: Does Java work on all computers?

jnesselr

Re: Does Java work on all computers?

DJ Omnimaga

Re: Does Java work on all computers?

Munchor

Re: Does Java work on all computers?

jnesselr

Re: Does Java work on all computers?

Binder News

Re: Does Java work on all computers?