not bale to run java codes

[DavidVignish04]

Type: Bug

unable to run codes

Extension version: 0.29.2
VS Code version: Code 1.101.2 (2901c5ac6db8a986a5666c3af51ff804d05af0d4, 2025-06-24T20:27:15.391Z)
OS version: Linux x64 6.11.0-26-generic
Modes:

System Info

Item	Value
CPUs	AMD Ryzen 3 3250U with Radeon Graphics (4 x 2370)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: disabled_software vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: disabled_off webnn: disabled_off
Load (avg)	3, 2, 1
Memory (System)	5.22GB (2.19GB free)
Process Argv	--crash-reporter-id 1d060043-b316-4325-a746-0d3df5566ce8 --crash-reporter-id 1d060043-b316-4325-a746-0d3df5566ce8
Screen Reader	no
VM	0%
DESKTOP_SESSION	ubuntu
XDG_CURRENT_DESKTOP	Unity
XDG_SESSION_DESKTOP	ubuntu
XDG_SESSION_TYPE	wayland

A/B Experiments

vsliv368:30146709
vswsl492:30256859
binariesv615:30325510
2e7ec940:31000449
nativeloc1:31344060
dwcopilot:31170013
6074i472:31201624
dwoutputs:31242946
hdaa2157:31222309
copilot_t_ci:31333650
e5gg6876:31282496
pythoneinst12:31285622
c7cif404:31314491
pythonpulldiag:31343502
996jf627:31283433
pythonrdcb7:31342333
usemplatestapi:31297334
0aa6g176:31307128
747dc170:31275177
aj953862:31281341
generatesymbolt:31295002
convertfstringf:31295003
pylancequickfixt:31350061
9d2cg352:31346306
usemarketplace:31343026
nesew2to5:31336538
agentclaude:31352135
b6b4d950:31327385
nes-diff-11:31337487
nes-set-on:31351930
6abeh943:31336334
yijiwantestdri0626-c:31336931
0927b901:31350571
f76d9909:31348711
a02b4192-color:31352028

[github-actions]

Hi @DavidVignish04, I'm an AI Support assistant here to help with your issue. While the team reviews your request, I wanted to provide some possible tips and documentation that might help you in the meantime.

Suggestions

• Verify JDK installation

  • Install a supported JDK (8+) and set JAVA_HOME and add $JAVA_HOME/bin to your PATH.

• Use the built-in Java extension commands

  • Install/enable Extension Pack for Java.
  • Right-click your main class and choose Run Java or Debug Java.

• Check the Java Language Server logs

  • View ➜ Output ➜ select Language Support for Java.
  • Look for startup errors or stack traces.

• Clean the Java language server workspace

  • Press F1 ➜ Java: Clean the Java language server workspace, then reload the window.

• If you have the Code Runner extension installed

  • It can conflict with the Java extension’s run/debug buttons—try disabling it when working with Java.

Labels

• needs-more-info
• bug

Duplicate

None found.

Other references with high confidence

• Language server startup failures can block running code:
  • “Language Support for Java client: couldn't create connection to server…” (logs, internal error)
    Language Support for Java client: couldn't create connection to server. Message: Internal error. Code: -32603  redhat-developer/vscode-java#3274

Other references with low confidence

• Symbol lookup/duplicate entries in Java (unlikely related to run issues)
  Symbol lookup in Java shows duplicates redhat-developer/vscode-java#3854

The team will respond to your issue shortly. I hope these suggestions are helpful in the meantime. If this comment helped you, please give it a 👍. If the suggestion was not helpful or incorrect, please give it a 👎. Your feedback helps us improve!