Warning: SomeClassName.java modified in the future. -- what's this error?

[Ls chin]

Hi,

I'm getting an error "Warning: SomeClassName.java modified in the future".

Not every file is giving me this error, only certain files do. I can't figure out what's wrong with them, there's nothing weird or extraordinary in those files that produce this error though.

Any idea what is it?

Thank you for your help.

[Campbell Ritchie]

Sounds like a warning from the OS; you have got timekeeping problems and the last modified time on some of your files is shown as being later than "now."

I don't think that is a specific Java problem, but an operating system problem.

[Ls chin]

Hi Campbell,

Thanks for your reply. I think it's an OS problem too because this afternoon I downloaded a stopwatch applet and after that NetBeans have been giving me this error.

I feel better, now that I know my java files are okay!

Thanks again. :-)

[Amit Ghorpade]

I am familiar with that warning in Netbeans.
It is usually displayed when you execute code without recompiling.

[Yogesh Tyagi]

Ls chin wrote:Hi,

I'm getting an error "Warning: SomeClassName.java modified in the future".

Not every file is giving me this error, only certain files do. I can't figure out what's wrong with them, there's nothing weird or extraordinary in those files that produce this error though.

Any idea what is it?

Thank you for your help.

This is because, The time of the system is not current on which you are running the build file. There are some classes in directories that get modified later the date your system is showing currently.....your system time is not up to date...or you modified the file with future date....check your system time when you are running the build file...

Regards
Yogesh Tyagi

[shareef hiasat]

This is because, The time of the system is not current on which you are running the build file. There are some classes in directories that get modified later the date your system is showing currently.....your system time is not up to date...or you modified the file with future date....check your system time when you are running the build file..

True because this error occurred when i made today yesterday !!

[Virgil Banowetz]

I got that same "modified in the future" warning because my clock on my old motherboard is unstable and keeps getting the date and time wrong.
NetBeans warns of this when it sees the date/times on files don't make sense.

[Rob Spoor]

You may want to replace the little battery on your motherboard. That often solves BIOS time issues.

[Stephan van Hulst]

It's still weird that the compiler does this. Is there a good reason for it?

[Campbell Ritchie]

And welcome to the Ranch