Warning: modified in the future

Question

I am getting the warning

Warning: sendmailpm.jsp modified in the future. 

What does this mean?

Answer 1

You aren't allowed to modify anything in the past if doing so might change the future. You might cause a temporal paradox, which could corrupt the time stream and cause our entire reality to cease to exist.

Please do not modify that file.

Answer 2

Someone probably modified the file, then changed the time on the server. Try checking to see what time your box is set to and make sure it's correct. If it is, you can probably ignore that warning without any side effects.

Answer 3

Check whether system time is correct or not. If not sync it with Standard time for your zone. Then run your build file.

Answer 4

If the java file that you are compiling has a time stamp that is beyond the current time of the system on which you are compiling...you will see this warning. I modified the file on one machine and put it on another and tried compiling and came across this issue.

Answer 5

This is because, The time of the system is not current on which you are running the build file

Answer 6

If your code is residing on a FAT/FAT32 partition or ZIP file, this can be caused by the lack of precision in the FAT/ZIP filesystem's timestamping, which is 2 seconds (afaik). This can cause compiler / build tool output to be saved with a time slightly in the future, so that when the next build/deployment step (can be internal to a JSP container) is executed, the file will appear to be from the future and the warning is produced. Try using a different file system, e.g. NTFS on DOS/Windows boxes.

I had the same warning message from Apache Ant when trying to do a Java build on a FAT32 TrueCrypt partition. After ruling out other causes (timezone difference, clock off etc), I eventually found a hint on this, changed to an NTFS TrueCrypt partition and the warning disappeared.