JOSM.exe does not choose latest Java version

[Uve.S@…]

What steps will reproduce the problem?

1. I upgraded Java Runtime Environment from 10.0.2 to 1.8.271 (both 64 bit)
2. I upgraded JOSM to 17428 by latest JOSM-setup.exe
3. I am launching JOSM by double-cklicking JOSM.exe

What is the expected result?

josm-tested.jar should be run with latest Java 8u271.

What happens instead?

But JOSM.exe chooses out-of-date Java 10.0.2.

Please provide any additional information below. Attach a screenshot if possible.

When double-clicking josm-tested.jar directly in Windows Exlorer, the right Java 1.8.271 is called. On the other hand, text looks very blurred in Java 8u271, so I will downgrade to 10.0.2 anyway.

launch4j.log
Version: 3.10
CmdLine: E:\JOSM\josm.exe --l4j-debug
WOW64: yes
Java min ver: 1.8.0
Java max ver:
64-bit search: SOFTWARE\JavaSoft\Java Runtime Environment...
Check: SOFTWARE\JavaSoft\Java Runtime Environment\1.8
Ignore: 1.8
Check: SOFTWARE\JavaSoft\Java Runtime Environment\1.8.0_271
Check launcher: E:\Java\JRE1.8.271\bin\javaw.exe (OK)
Match: 1.8.0_271
64-bit search: SOFTWARE\JavaSoft\Java Development Kit...
64-bit search: SOFTWARE\JavaSoft\JRE...
Check: SOFTWARE\JavaSoft\JRE\10.0.2
Check launcher: E:\Java\JRE10.0.2\bin\javaw.exe (OK)
Match: 10.0.2
64-bit search: SOFTWARE\JavaSoft\JDK...
Runtime used: 10.0.2 (64-bit)
Heap -Xms: Requested 256 MB / 0%, Available: 2982 MB, Heap size: 256 MB
Heap -Xmx: Requested 2048 MB / 0%, Available: 2982 MB, Heap size: 2048 MB
Launcher: E:\Java\JRE10.0.2\bin\javaw.exe
Launcher args: -Xms256m -Xmx2048m -jar "E:\JOSM\josm-tested.jar"
Args length: 49/32768 chars
Exit code: 0

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2020-12-28 22:03:23 +0100 (Mon, 28 Dec 2020)
Build-Date:2020-12-29 02:30:53
Revision:17428
Relative:URL: ^/trunk

Identification: JOSM/1.5 (17428 en) Windows 10 64-Bit
OS Build number: Windows 10 Pro 1909 (18363)
Memory Usage: 872 MB / 1820 MB (542 MB allocated, but free)
Java version: 1.8.0_271-b09, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 2736×1824 (scaling 1.00×1.00)
Maximum Screen Size: 2736×1824
Best cursor sizes: 16×16→32×32, 32×32→32×32
Dataset consistency test: No problems found

Plugins:
+ imagery_offset_db (35640)
+ turnrestrictions (35640)

Last errors/warnings:
- 01085.970 E: Failed to locate image 'Block, Green'
- 01085.980 E: Failed to locate image 'Block, Red'
- 01085.982 E: Failed to locate image 'Block, Blue'

[Uve.S@…]

log file of JOSM.exe

[skyper]

Actually, 10.0.2 is a higher version than 1.8.271 but 10 has already been superseded by higher versions. For HiDPI you need 9 or later, see Help/HiDPISupport.

Please, make sure to completely uninstall one java version before installing a new one. Otherwise, you might need to manually set the version to use.

In your case, JOSM uses the highest available version which seems to be correct.

[Don-vip]

Keep only one version of Java installed, you have these choices:

• 8u275 (LTS)
• 11.0.9.1 (LTS)
• 15.0.1 (non LTS: you have to update to 16 when it's released, then 17 which will be the next LTS)