to run jar file without installing jre

Md Saim · #1 (**permalink**) 10-01-2008, 09:07 AM

i have a stand-alone JAR file. I want it to distribute it on CD.Now JAR file requires JRE to work.How do i create the CD without installing JRE on the client PC ? Is there any way to emulate the Java Runtime Environment on the CD so that no installation of JRE is required on the client PC and the JAR file can directly run from the CD .

Thanks in advance.

georgemc · #2 (**permalink**) 10-01-2008, 12:11 PM

Can't be done

GhosT · #3 (**permalink**) 10-01-2008, 03:19 PM

Quote:

Can't be done

not true....i have done it many times...u need a software JAR2EXE converter. It will make your jar file a native one and thn u can run it without having JDK installed.

Other normal exe converters will just make an exe to call the jar. so chk before u download.

EXAMPLE

i made all these in java and converted them in exe...they run fine!

Norm · #4 (**permalink**) 10-01-2008, 04:55 PM

Ghost-
Look at the size of the folders containing the jre. Compare that to the size of the .exe that is created. Do you think that all that code in the jre can be squeezed into the .exe?
Does the jar2exe conversion program convert java code to MS code so that it uses MS's dll files vs the Sun class files?
Are you able to execute the .exe on a system that does NOT contain a jre?

Where did you get your jar2exe program? One that does NOT make an exe to call the jar.

GhosT · #5 (**permalink**) 10-01-2008, 05:45 PM

my jar file had a size of 100KB and when i made it exe it required me to locate all the library jars and the total size has increased to 3+ MB...i sent it to my friends computer...and he said it was running...he dont do java...so i guess...its possible...

but i didnt check it in my pc...because i am afraid if i uninstall JDK some previous problems i had regarding installation will arise again...

the program builder is regexlab.
Jar2Exe - Java2Exe - JarToExe Convert Wizard Free Edition Download

GhosT · #6 (**permalink**) 10-01-2008, 05:50 PM

um sorry...i guess it needs jvm to run...i had this confusion...sorry...it wont run without jre/jdk installed. it starts java virtual machine using JNI interface.

still making exe makes it easy to distribute through installers.

Norm · #7 (**permalink**) 10-01-2008, 07:24 PM

I think you could test it on your PC without doing an uninstall by finding all the java.exe files and renaming them to something like java.exe.XXX so that the .exe can't find a java.exe and see what happened.

georgemc · #8 (**permalink**) 10-01-2008, 08:11 PM

Now run that once-portable Java application on a Unix machine.....

The question isn't really "how do I do this?" it's "Why bother doing this?"

GhosT · #9 (**permalink**) 10-02-2008, 05:11 AM

EID MUBARAK to u people!