Problem with java during installation

[Andrew]

Hello!

I was trying to install AstroImageJ into my Ubuntu virtual machine and had some problems with java. I installed the OpenJDK version of java and followed the Installation Guide on Linux Systems of this webpage. I founded a problem running aij. When I call aij or astroimagej on the console I got:

'Exception in thread "main" java.lang.UnsatisfiedLinkError: Can't load library: /usr/lib/jvm/java-17-openjdk-amd64/lib/libawt_xawt.so
at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2393)
at java.base/java.lang.Runtime.load0(Runtime.java:755)
at java.base/java.lang.System.load(System.java:1953)
at java.base/jdk.internal.loader.NativeLibraries.load(Native Method)
at java.base/jdk.internal.loader.NativeLibraries$NativeLibraryImpl.open(NativeLibraries.java:384)
at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:228)
at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:170)
at java.base/jdk.internal.loader.NativeLibraries.findFromPaths(NativeLibraries.java:311)
at java.base/jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:281)
at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2398)
at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:818)
at java.base/java.lang.System.loadLibrary(System.java:1989)
at java.desktop/java.awt.Toolkit$2.run(Toolkit.java:1392)
at java.desktop/java.awt.Toolkit$2.run(Toolkit.java:1390)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
at java.desktop/java.awt.Toolkit.loadLibraries(Toolkit.java:1389)
at java.desktop/java.awt.Toolkit.initStatic(Toolkit.java:1427)
at java.desktop/java.awt.Toolkit.<clinit>(Toolkit.java:1401)
at java.desktop/java.awt.Component.<clinit>(Component.java:624)'

I don't know how could I solve it. If someone could help me out I would be very grateful!

[Riccardo Papini]

Hi Andrew,

I am a Linux user but I am afraid I do not have the complete answer you are looking for. Here I am sharing my working configuration. I usually run AIJ in my Ubuntu 20.04 and it works fine.

I have checked the java version installed in my OS with the terminal command

pcc@liric:~$ java -version
openjdk version "11.0.11" 2021-04-20
OpenJDK Runtime Environment (build 11.0.11+9-Ubuntu-0ubuntu2.20.04)
OpenJDK 64-Bit Server VM (build 11.0.11+9-Ubuntu-0ubuntu2.20.04, mixed mode, sharing)

I wonder if the different version may be responsible for the error.

By the way, have you checked the library /usr/lib/jvm/java-17-openjdk-amd64/lib/libawt_xawt.so is installed in your system?

Riccardo

[keastrid]

Hi Andrew,

You've installed the headless (no GUI) version of the JDK. You'll want to install the full version.

Kevin