Cannot find equinox launcher - java jdtls attached

[rklak]

After I install a jdtls - there is a problem that it cannot find Equinox Launcher. How can I fix this?

Traceback (most recent call last):
  File "/Users/radoslaw.klak/.local/share/nvim/mason/packages/jdtls/bin/jdtls", line 17, in <module>
    jdtls.main(sys.argv[1:])
    ~~~~~~~~~~^^^^^^^^^^^^^^
  File "/Users/radoslaw.klak/.local/share/nvim/mason/packages/jdtls/bin/jdtls.py", line 91, in main
    jar_path = find_equinox_launcher(jdtls_base_path)
  File "/Users/radoslaw.klak/.local/share/nvim/mason/packages/jdtls/bin/jdtls.py", line 56, in find_equinox_launcher
    raise Exception("Cannot find equinox launcher")
Exception: Cannot find equinox launcher

[KrekoG]

It may not be the same issue, but when I ran into a similar one and I ended up checking the files and there was an error in one of the functions attempting to figure out it's location.

~/.local/share/nvim/mason/package/jdtls/bin/jdtls.py ln 50:

def find_equinox_launcher(jdtls_base_directory):
	plugins_dir = jdtls_base_directory / "plugins"
	# Original line:
	# launchers = plugins_dir.glob('org.eclipse.equinox.launcher_*.jar')
	# Fixed line:
	launchers = plugins_dir.glob('org.eclipse.equinox.launcher*.jar')
	for launcher in launchers:
		return str(plugins_dir / launcher)

This modification fixed it for me as the new pattern was matching the equinox launchers.

Though this seems to be unrelated to mason

[DaysSky]

~/.local/share/nvim/mason/package/jdtls/bin/jdtls.py ln 50:

def find_equinox_launcher(jdtls_base_directory):
	plugins_dir = jdtls_base_directory / "plugins"
	# Original line:
	# launchers = plugins_dir.glob('org.eclipse.equinox.launcher_*.jar')
	# Fixed line:
	launchers = plugins_dir.glob('org.eclipse.equinox.launcher*.jar')
	for launcher in launchers:
		return str(plugins_dir / launcher)

I had to remove the * at launcher*.jar, since i had a launcher.jar which was the launcher, and other launchers such as launcher.macos.jar etc.

[KrekoG]

The * allows it to pick up all the present variants, but that will also work

[mv-stns]

The underscore is wrong tho. There is no direct underscore:

/Users/marcus/.local/share/nvim/mason/share/jdtls/plugins/org.eclipse.equinox.launcher.cocoa.macosx.aarch64_1.2.1100.v20240722-2106.jar -> /Users/marcus/.local/share/nvim/mason/packages/jdtls/plugins/org.eclipse.equinox.launcher.cocoa.macosx.aarch64_1.2.1100.v20240722-2106.jar
/Users/marcus/.local/share/nvim/mason/share/jdtls/plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.2.1100.v20240722-2106.jar -> /Users/marcus/.local/share/nvim/mason/packages/jdtls/plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.2.1100.v20240722-2106.jar
/Users/marcus/.local/share/nvim/mason/share/jdtls/plugins/org.eclipse.equinox.launcher.gtk.linux.aarch64_1.2.1200.v20240924-2302.jar -> /Users/marcus/.local/share/nvim/mason/packages/jdtls/plugins/org.eclipse.equinox.launcher.gtk.linux.aarch64_1.2.1200.v20240924-2302.jar
/Users/marcus/.local/share/nvim/mason/share/jdtls/plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.2.1200.v20240924-2302.jar -> /Users/marcus/.local/share/nvim/mason/packages/jdtls/plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.2.1200.v20240924-2302.jar
/Users/marcus/.local/share/nvim/mason/share/jdtls/plugins/org.eclipse.equinox.launcher.jar -> /Users/marcus/.local/share/nvim/mason/packages/jdtls/plugins/org.eclipse.equinox.launcher.jar
/Users/marcus/.local/share/nvim/mason/share/jdtls/plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.2.1100.v20240722-2106.jar -> /Users/marcus/.local/share/nvim/mason/packages/jdtls/plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.2.1100.v20240722-2106.jar

[mv-stns]

Also experiencing the same... but men this isnt working out for me.

 610   │ [ERROR][2025-01-22 21:42:12] .../vim/lsp/rpc.lua:770    "rpc"   "/Users/marcus/.local/share/nvim/mason/bin/marksman" "stderr"    '[21:42:12 INF] <Folder> Loading folder documents: {"uri": "file:///Users/marcus/.local/share/nvim/lazy/LazyVim"}\n'
 611   │ [ERROR][2025-01-22 21:42:12] ...lsp/handlers.lua:623    "FILES Lock is good"
 612   │ [WARN][2025-01-22 21:42:12] ...lsp/handlers.lua:625 "Semantic Tokens Done took 0ms"
 613   │ [WARN][2025-01-22 21:42:12] ...lsp/handlers.lua:625 "Update Vault Started"
 614   │ [ERROR][2025-01-22 21:42:12] ...lsp/handlers.lua:623    "VAULT Lock is good"
 615   │ [WARN][2025-01-22 21:42:12] ...lsp/handlers.lua:625 "Update Vault Done"
 616   │ [WARN][2025-01-22 21:42:12] ...lsp/handlers.lua:625 "Diagnostics Started"
 617   │ [WARN][2025-01-22 21:42:12] ...lsp/handlers.lua:625 "Diagnostics Done"
 618   │ [WARN][2025-01-22 21:42:12] ...lsp/handlers.lua:625 "Diagnostics Done took 0ms"
 619   │ [WARN][2025-01-22 21:42:12] ...lsp/handlers.lua:625 "Semantic Tokens Done took 0ms"
 620   │ [WARN][2025-01-22 21:42:12] ...lsp/handlers.lua:625 "Diagnostics Started"
 621   │ [WARN][2025-01-22 21:42:12] ...lsp/handlers.lua:625 "Diagnostics Done"
 622   │ [WARN][2025-01-22 21:42:12] ...lsp/handlers.lua:625 "Diagnostics Done took 0ms"
 623   │ [START][2025-01-22 21:42:42] LSP logging initiated
 624   │ [ERROR][2025-01-22 21:42:42] .../vim/lsp/rpc.lua:770    "rpc"   "/Users/marcus/.local/share/nvim/mason/bin/jdtls"    "stderr"    'Traceback (most recent call last):\n  File "/Users/marcus/.local/share/nvim/mason/packages/jdtls/bin/jdtls", line 17, in <module>\n    jdtls.main(sys.arg
       │ v[1:])\n    ~~~~~~~~~~^^^^^^^^^^^^^^\n  File "/Users/marcus/.local/share/nvim/mason/packages/jdtls/bin/jdtls.py", line 91, in main\n    jar_path = find_equinox_launcher(jdtls_base_path)\n  File "/Users/marcus/.local/share/nvim/mason/packages/jdtls/bin/jdtls.py", line 56, in find_equ
       │ inox_launcher\n    raise Exception("Cannot find equinox launcher")\nException: Cannot find equinox launcher\n'

[naxvan]

Hello everyone, here’s a temporary solution:

Navigate to the list of Equinox launchers and locate the file named:
org.eclipse.equinox.launcher.jar.

Rename this file, as the current naming pattern prevents it from being recognized.

To determine the correct version of the JAR file, run the following command:

unzip -p ~/.local/share/nvim/mason/packages/jdtls/plugins/org.eclipse.equinox.launcher.jar META-INF/MANIFEST.MF | grep "Bundle-Version"

Once you have the version, rename the file by appending the version to its name. For example:

mv ~/.local/share/nvim/mason/packages/jdtls/plugins/org.eclipse.equinox.launcher.jar ~/.local/share/nvim/mason/packages/jdtls/plugins/org.eclipse.equinox.launcher_<VERSION>.jar

This should resolve the issue.

Example : mv ~/.local/share/nvim/mason/packages/jdtls/plugins/org.eclipse.equinox.launcher.jar
~/.local/share/nvim/mason/packages/jdtls/plugins/org.eclipse.equinox.launcher_1.6.900.v20240613-2009.jar

[naxvan]

And I try implement the solution jdtls.py so you can replace : https://github.com/naxvan/jdtls.py