Vscode-java: Auto-completion doesn't show inline documentation in the popup

[timfayz]

Issue Type: Bug

As you can see from the screenshot below there is no inline documentation available in the popup. Which I believe isn't expected behaviour.

(look at thin empty popup at the right of the list of suggestions)

At the other hand, auto completion of the class members seems to be correct:

What's wrong here?

Just in case, run and debug works ok.

Extension version: 0.46.0
VS Code version: Code 1.35.0 (553cfb2c2205db5f15f3ee8395bbd5cf066d357d, 2019-06-04T01:13:26.790Z)
OS version: Linux x64 4.15.0-20-generic

System Info

|Item|Value|
|---|---|
|CPUs|Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz (8 x 1311)|
|GPU Status|2d_canvas: enabled
checker_imaging: disabled_off
flash_3d: enabled
flash_stage3d: enabled
flash_stage3d_baseline: enabled
gpu_compositing: enabled
multiple_raster_threads: enabled_on
native_gpu_memory_buffers: disabled_software
rasterization: disabled_software
surface_synchronization: enabled_on
video_decode: unavailable_off
webgl: enabled
webgl2: enabled|
|Load (avg)|2, 2, 1|
|Memory (System)|5.71GB (1.79GB free)|
|Process Argv|--unity-launch|
|Screen Reader|no|
|VM|0%|

[fbricon]

make sure you installed the jdk sources

[timfayz]

Thank you for the quick answer. I've installed recently - didn't help. This is what I have related to Java:

i   default-jdk                                             - Standard Java or Java compatible Development Kit                  
i A default-jdk-headless                                    - Standard Java or Java compatible Development Kit (headless)       
i A openjdk-11-jdk                                          - OpenJDK Development Kit (JDK)                                     
i A openjdk-11-jdk-headless                                 - OpenJDK Development Kit (JDK) (headless)                          
i   openjdk-11-jre                                          - OpenJDK Java runtime, using Hotspot JIT                           
i   openjdk-11-jre-headless                                 - OpenJDK Java runtime, using Hotspot JIT (headless)                
i   openjdk-11-source                                       - OpenJDK Development Kit (JDK) source files  

[timfayz]

openjdk-11-source consists of 2 files:

/usr/lib/jvm/openjdk-11/lib/src.zip
/usr/share/doc/openjdk-11-source

All the sources packed inside the zip file.

[fbricon]

See if https://github.com/redhat-developer/vscode-java/issues/689#issuecomment-434046529 is any helpful

[timfayz]

Just perfect! It works now. Thank you for that hint! :)
This is what I did:

cd /usr/lib/jvm/java-11-openjdk-amd64
sudo rm src.zip # remove broken link
sudo ln -s /usr/lib/jvm/openjdk-11/lib/src.zip src.zip # create new one

[fbricon]

duplicate of #689

[kinlhp]

In my case the @timfayz approach did not work, the file src.zip, where the symbol link points, does not exist:

user@host:~$ whereis java
java: /usr/bin/java /usr/share/java /usr/share/man/man1/java.1.gz

user@host:~$ ll /usr/bin/java
lrwxrwxrwx 1 root root 22 Apr 26 00:24 /usr/bin/java -> /etc/alternatives/java*

user@host:~$ ll /etc/alternatives/java
lrwxrwxrwx 1 root root 43 Apr 26 00:24 /etc/alternatives/java -> /usr/lib/jvm/java-11-openjdk-amd64/bin/java*

user@host:~$ ll /usr/lib/jvm/java-11-openjdk-amd64/
total 48
drwxr-xr-x  9 root root  4096 May 14 20:49 ./
drwxr-xr-x  3 root root  4096 May 14 20:49 ../
drwxr-xr-x  2 root root  4096 May 14 20:49 bin/
drwxr-xr-x  4 root root  4096 May 14 20:49 conf/
lrwxrwxrwx  1 root root    42 Apr 16 23:00 docs -> ../../../share/doc/openjdk-11-jre-headless/
drwxr-xr-x  3 root root  4096 May 14 20:49 include/
drwxr-xr-x  2 root root 12288 May 14 20:49 jmods/
drwxr-xr-x 72 root root  4096 Apr 26 00:23 legal/
drwxr-xr-x  6 root root  4096 May 14 20:49 lib/
drwxr-xr-x  4 root root  4096 Apr 26 00:23 man/
-rw-r--r--  1 root root  1161 Apr 23 14:34 release
lrwxrwxrwx  1 root root    21 Apr 23 14:34 src.zip -> ../openjdk-11/src.zip # broken link

user@host:~$ ll /usr/lib/jvm/openjdk-11/lib/src.zip
ls: cannot access '/usr/lib/jvm/openjdk-11/lib/src.zip': No such file or directory

user@host:~$ ll /usr/lib/jvm/
total 16
drwxr-xr-x   3 root root 4096 May 14 20:49 ./
drwxr-xr-x 148 root root 4096 Jun 15 13:19 ../
lrwxrwxrwx   1 root root   21 Apr 16 23:00 java-1.11.0-openjdk-amd64 -> java-11-openjdk-amd64/
-rw-r--r--   1 root root 1994 Apr 23 14:34 .java-1.11.0-openjdk-amd64.jinfo
drwxr-xr-x   9 root root 4096 May 14 20:49 java-11-openjdk-amd64/

user@host:~$ ll /usr/lib/jvm/java-11-openjdk-amd64/lib/src.zip
ls: cannot access '/usr/lib/jvm/java-11-openjdk-amd64/lib/src.zip': No such file or directory

user@host:~$ ll /usr/lib/jvm/java-11-openjdk-amd64/lib/
total 146460
drwxr-xr-x 6 root root      4096 May 14 20:49 ./
drwxr-xr-x 9 root root      4096 May 14 20:49 ../
-rw-r--r-- 1 root root     39425 Apr 23 14:34 classlist
-rw-r--r-- 1 root root   4489105 Apr 23 14:34 ct.sym
-rw-r--r-- 1 root root        63 Apr 23 14:34 jar.binfmt
-rwxr-xr-x 1 root root     14392 Apr 23 14:34 jexec*
drwxr-xr-x 2 root root      4096 May 14 20:49 jfr/
drwxr-xr-x 2 root root      4096 May 14 20:49 jli/
-rw-r--r-- 1 root root    106234 Apr 23 14:34 jrt-fs.jar
lrwxrwxrwx 1 root root        34 Apr 23 14:34 jvm.cfg -> /etc/java-11-openjdk/jvm-amd64.cfg
-rw-r--r-- 1 root root       278 Apr 23 14:34 jvm.cfg-default
lrwxrwxrwx 1 root root        47 Apr 23 14:34 libatk-wrapper.so -> ../../../x86_64-linux-gnu/jni/libatk-wrapper.so
-rw-r--r-- 1 root root     14504 Apr 23 14:34 libattach.so
-rw-r--r-- 1 root root     39216 Apr 23 14:34 libawt_headless.so
-rw-r--r-- 1 root root    700600 Apr 23 14:34 libawt.so
-rw-r--r-- 1 root root    396768 Apr 23 14:34 libawt_xawt.so
-rw-r--r-- 1 root root     22840 Apr 23 14:34 libdt_socket.so
-rw-r--r-- 1 root root     14392 Apr 23 14:34 libextnet.so
-rw-r--r-- 1 root root    712376 Apr 23 14:34 libfontmanager.so
-rw-r--r-- 1 root root     47296 Apr 23 14:34 libinstrument.so
-rw-r--r-- 1 root root     43088 Apr 23 14:34 libj2gss.so
-rw-r--r-- 1 root root     14456 Apr 23 14:34 libj2pcsc.so
-rw-r--r-- 1 root root     75880 Apr 23 14:34 libj2pkcs11.so
-rw-r--r-- 1 root root     14376 Apr 23 14:34 libjaas.so
-rw-r--r-- 1 root root     47408 Apr 23 14:34 libjavajpeg.so
-rw-r--r-- 1 root root    175232 Apr 23 14:34 libjava.so
-rw-r--r-- 1 root root     14032 Apr 23 14:34 libjawt.so
-rw-r--r-- 1 root root    249328 Apr 23 14:34 libjdwp.so
-rw-r--r-- 1 root root     31112 Apr 23 14:34 libjimage.so
-rw-r--r-- 1 root root     14440 Apr 23 14:34 libjsig.so
-rw-r--r-- 1 root root     68648 Apr 23 14:34 libjsound.so
-rw-r--r-- 1 root root     22856 Apr 23 14:34 liblcms.so
-rw-r--r-- 1 root root     14368 Apr 23 14:34 libmanagement_agent.so
-rw-r--r-- 1 root root     26864 Apr 23 14:34 libmanagement_ext.so
-rw-r--r-- 1 root root     22584 Apr 23 14:34 libmanagement.so
-rw-r--r-- 1 root root    567424 Apr 23 14:34 libmlib_image.so
-rw-r--r-- 1 root root     96904 Apr 23 14:34 libnet.so
-rw-r--r-- 1 root root     72592 Apr 23 14:34 libnio.so
-rw-r--r-- 1 root root     14328 Apr 23 14:34 libprefs.so
-rw-r--r-- 1 root root     14272 Apr 23 14:34 librmi.so
-rw-r--r-- 1 root root     47616 Apr 23 14:34 libsaproc.so
-rw-r--r-- 1 root root     30984 Apr 23 14:34 libsctp.so
-rw-r--r-- 1 root root     52136 Apr 23 14:34 libsplashscreen.so
-rw-r--r-- 1 root root    195432 Apr 23 14:34 libsunec.so
-rw-r--r-- 1 root root    107616 Apr 23 14:34 libunpack.so
-rw-r--r-- 1 root root     63936 Apr 23 14:34 libverify.so
-rw-r--r-- 1 root root     35168 Apr 23 14:34 libzip.so
-rw-r--r-- 1 root root 141038892 Apr 23 14:34 modules
lrwxrwxrwx 1 root root        41 Apr 23 14:34 psfontj2d.properties -> /etc/java-11-openjdk/psfontj2d.properties
lrwxrwxrwx 1 root root        41 Apr 23 14:34 psfont.properties.ja -> /etc/java-11-openjdk/psfont.properties.ja
drwxr-xr-x 2 root root      4096 May 14 20:49 security/
drwxr-xr-x 2 root root      4096 May 14 20:49 server/
lrwxrwxrwx 1 root root        37 Apr 23 14:34 swing.properties -> /etc/java-11-openjdk/swing.properties
-rw-r--r-- 1 root root    105734 Apr 23 14:34 tzdb.dat

The installation process was as follows:

user@host:~$ sudo apt install openjdk-11-jdk

user@host:~$ sudo vi /etc/environment
    ...
    JAVA_HOME=”/usr/lib/jvm/java-1.11.0-openjdk-amd64”
    ...

And I have as a result:

user@host:~$ echo $JAVA_HOME 
/usr/lib/jvm/java-1.11.0-openjdk-amd64

user@host:~$ $JAVA_HOME/bin/java --version
openjdk 11.0.3 2019-04-16
OpenJDK Runtime Environment (build 11.0.3+7-Ubuntu-1ubuntu219.04.1)
OpenJDK 64-Bit Server VM (build 11.0.3+7-Ubuntu-1ubuntu219.04.1, mixed mode, sharing)

[snjeza]

@kinlhp you should install the source file using the following command:

sudo apt install openjdk-11-source
ll  /usr/lib/jvm/openjdk-11/lib/src.zip
rm  /usr/lib/jvm/java-11-openjdk-amd64/lib/src.zip
ln -s /usr/lib/jvm/openjdk-11/lib/src.zip /usr/lib/jvm/java-11-openjdk-amd64/lib/src.zip
ll /usr/lib/jvm/java-11-openjdk-amd64/lib/src.zip

[kinlhp]

Thanks @snjeza, this works fine.
But I just did it:

user@host:~$ sudo apt install openjdk-11-source 

user@host:~$ sudo ln -fs /usr/lib/jvm/openjdk-11/lib/src.zip /usr/lib/jvm/java-11-openjdk-amd64/src.zip # updates the current link source