Uncaught TypeError: Cannot read property '0' of null

[coderbond007]

[Enter steps to reproduce:]

1. ...
2. ...

Atom: 1.21.0-beta1 x64
Electron: 1.6.9
OS: Microsoft Windows 10 Home Single Language
Thrown From: ide-java package 0.6.2

Stack Trace

Uncaught TypeError: Cannot read property '0' of null

At C:\Users\user\.atom\packages\ide-java\lib\main.js:89

TypeError: Cannot read property '0' of null
    at ChildProcess.childProcess.on.exitCode (/packages/ide-java/lib/main.js:89:45)
    at emitTwo (events.js:106:13)
    at ChildProcess.emit (events.js:191:7)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:215:12)

Commands

     -3:07.7.0 welcome:show (atom-pane.pane)
  2x -2:43.9.0 core:backspace (input.hidden-input)
     -2:41.6.0 core:confirm (input.hidden-input)
 14x -2:23.6.0 core:backspace (input.hidden-input)
     -2:19.7.0 core:confirm (input.hidden-input)

Non-Core Packages

atom-ide-ui 0.3.3 
ide-java 0.6.2 

[damieng]

What version of the Java runtime do you have installed and is it on your path?

Both answers can be had by typing java --showversion -version from a command prompt window.

[jbree]

Same issue. Included my version of Java in case it helps.

1. Add project folder
2. Open .java file

Atom: 1.21.0-beta1 x64
Electron: 1.6.9
OS: Ubuntu 17.04
Thrown From: ide-java package 0.6.2

Stack Trace

Uncaught TypeError: Cannot read property '0' of null

At /home/jbreeden/.atom/packages/ide-java/lib/main.js:89

TypeError: Cannot read property '0' of null
    at ChildProcess.childProcess.on.exitCode (/packages/ide-java/lib/main.js:89:45)
    at emitTwo (events.js:106:13)
    at ChildProcess.emit (events.js:191:7)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:215:12)

Commands

     -0:25.3.0 application:add-project-folder (input.hidden-input)
     -0:10.7.0 fuzzy-finder:toggle-file-finder (div.tool-panel.tree-view)
     -0:09.0 core:select-all (input.hidden-input)
     -0:08.5.0 core:backspace (input.hidden-input)
  2x -0:06.5.0 core:move-down (input.hidden-input)
     -0:04.7.0 core:move-up (input.hidden-input)
     -0:03.9.0 core:confirm (input.hidden-input)

Non-Core Packages

atom-beautify 0.30.5 
atom-ide-ui 0.4.0 
atom-maven 1.3.0 
behave-theme 1.7.0 
build 0.68.0 
busy 0.7.0 
busy-signal 1.4.3 
docblockr 0.11.0 
file-icons 2.1.12 
fonts 3.0.3 
git-diff-details 1.4.0 
ide-clangd 0.1.2 
ide-java 0.6.2 
intentions 1.1.5 
java-package-view 0.0.0 
language-autotools 2.0.1 
language-cmake 0.3.0 
language-swift 0.5.0 
linter 2.2.0 
linter-eslint 8.3.2 
linter-jshint 3.1.6 
linter-jsonlint 1.3.0 
linter-ui-default 1.6.10 
linter-xmllint 1.4.3 
minimap 4.29.7 
minimap-git-diff 4.3.1 
minimap-pigments 0.2.2 
nucleus-dark-ui 0.12.3 
project-manager 3.3.5 
Sublime-Style-Column-Selection 1.7.4 
svn 0.0.13 
switch-header-source 0.22.1 
tability 0.0.0 
toggle-packages 1.1.0 
tree-view-autoresize 2.2.0 

Java version:

openjdk version "1.8.0_131"
OpenJDK Runtime Environment (build 1.8.0_131-8u131-b11-2ubuntu1.17.04.3-b11)
OpenJDK 64-Bit Server VM (build 25.131-b11, mixed mode)

[damieng]

I've pushed a 0.6.3 update that tries to grab the version output in multiple ways. Let me know if you still get the error or not after updating.

[jbree]

Still fails. I think the problem is with the regex on line 90:

/java version "(\d+.\d+).\d+_\d+"/

problem is, in openjdk, the string I get back is:
openjdk version "1.8.0_131"

[damieng]

Ah, OpenJDK. Have only tried it with the official Sun one. Will get another update out in a few minutes.

[jbree]

When I changed it to this, it fixed the issue for me:
/^\w+ version "(\d+.\d+).\d+_\d+"/

[damieng]

0.6.4 published with a similar fix.

[jbree]

Fixed for me, thx!

[coderbond007]

Same error showing again now the message is

C:\Users\user.atom\packages\ide-java\lib\main.js:91
Hide Stack Trace
TypeError: Cannot read property '0' of null
at ChildProcess.childProcess.on.exitCode (C:\Users\user.atom\packages\ide-java\lib\main.js:91:45)
at emitTwo (events.js:106:13)
at ChildProcess.emit (events.js:191:7)
at Process.ChildProcess._handle.onexit (internal/child_process.js:215:12)

[damieng]

@coderbond007 can you type the following on your command line and report the results;

java --showversion -version

[coderbond007]

I have Java version 9 (Windows 10). Build (9 + 181)

[damieng]

Can you post the exact results? That error is specifically in the area where we try to parse the result string to ensure it is 1.8 or later.

[coderbond007]

C:\Users\user.atom\packages\ide-java\lib\main.js:91

TypeError: Cannot read property '0' of null
    at ChildProcess.childProcess.on.exitCode (C:\Users\user\.atom\packages\ide-java\lib\main.js:91:45)
    at emitTwo (events.js:106:13)
    at ChildProcess.emit (events.js:191:7)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:215:12)

I pasted your command on Windows Command Prompt. Exact Results are

java version "9"
Java(TM) SE Runtime Environment (build 9+181)
Java HotSpot(TM) 64-Bit Server VM (build 9+181, mixed mode)

[damieng]

Hmm, looks like Java version 9 has a totally different version string :(

Will get an update out for this soon.