In my application iam using some external libraries....
I want to build an executable jar file for my application....
I want the external jar files should also be present in the jar file....
I have tried, but failed to execute the jar file.....as my application unable to find the external jar files in classpath
I need help regarding...
I have tried keeping the external library files outside the jar file and succeeded, but the requirement is different..
In this case i have come across one more problem, I have two java versions installed in my system Java 5 and 6.....Java 6 got installed because of some software
my application has some incompatibility issues with java 6 (especially with jdbc drivers)
while running jar file, it is giving some problem because of java version 6
Is there any way i can do some settings in jar file, so that the jar file run w.r.t jre version 5 instead of jre version 6
Also let me know, is there any way i can mention the JRE path in the jar file, so that the application will run with respect to specified JRE
That's not possible. You can use a BAT file to start your JAR file with a specific JRE, but think about what will happen if the user does not have that specific JRE, or has it installed at a different location.
In short, it's not easy preventing users from unjarring a jar or decompiling your code (there may be some commercial products out there that I'm not aware of). Some people therefore use code obscuficators so that their code is not readable.
Certain types of Licensing also give you legal protection from people doing this.