JOSM does not clean up temporary jar_cache files

[maarten]

I am using JOSM webstart, currently version 5759 on Windows XP. I have observed the same when using a downloaded JOSM

JOSM creates files called jar_cache*.tmp in the users temporary directory ("%USERPROFILE%\Local Settings\temp") and does not clean them up after exiting.
Some files are sometimes empty, some files contain tiles from the download dialog (rename the file to .png and open them in an image viewer).

It would be nice if JOSM would delete these files after exiting.

[Don-vip]

Confirmed. I have myself:

• 75 PNG tiles (256x256 px), all of them clearly being partially downloaded (the bottom is black)
• 11 HTML files, all of them being the JOSM Startup page, but partially downloaded (file ends at a random location)

[Don-vip]

Looks like a Java bug to me, JOSM does not seem to create these files by itself, at least for the StartupPage.
What is your Java version ?

[maarten]

Currently Java version 7 update 15 (build 1.7.0_15-b03) but I have seen this behaviour a long time, so it is not something new.

[Don-vip]

I rather hoped for a Java 6 bug. Too bad.

[Don-vip]

In 5834/josm:

see #8570 - close stream after reading page from wiki

[Don-vip]

In 5839/josm:

see #8570 - close more streams

[Don-vip]

In 5874/josm:

see #8570, #7406 - I/O refactorization:

• Move different file copy functions to Utils.copyFile (to be replaced later by Files.copy when switching to Java 7)
• Replace all Utils.close(XXX) by Utils.close(Closeable) -> impacted plugins: commandline, mirrored_download, opendata, piclayer
• Add new Utils.close(ZipFile)
• Use of Utils.close almost everywhere
• Javadoc fixes

[Don-vip]

Should be fixed in [o29528].
Please reopen if new temp files are still created with tomorrow's latest.