MATLAB 2018b hangs on splash screen in ubuntu 16.04 (unsupported java probably)
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Hello, I have a problem with MATLAB 2018b in ubuntu 16.04: it hangs on splash screen. Previously I had MATLAB 2016b and everything worked fine. I am currently able to run matlab only with the -nodesktop option. A test log output created during the splash screen hanging reports:
[Warning: A Java exception occurred trying to load the com/mathworks/mlwidgets/help/DocCenterDocConfig class: Java exception occurred: java.lang.UnsupportedClassVersionError: com/mathworks/helpsearch/DocPathBuilder : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:803) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:803) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:195) at com.mathworks.jmi.OpaqueJavaInterface.findClass(OpaqueJavaInterface.java:137)] Exception in thread "AWT-EventQueue-0": java.lang.UnsupportedClassVersionError: com/mathworks/search/SearchField : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:803) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at com.mathworks.mde.desk.MLMainFrame.<init>(MLMainFrame.java:65) at com.mathworks.mde.desk.MLDesktop.createMainFrame(MLDesktop.java:1639) at com.mathworks.widgets.desk.Desktop.initMainFrame(Desktop.java:276) at com.mathworks.mde.desk.MLDesktop.initMainFrameFromThread(MLDesktop.java:833) at com.mathworks.mde.desk.MLDesktop.access$600(MLDesktop.java:219) at com.mathworks.mde.desk.MLDesktop$Initializer.run(MLDesktop.java:1170) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:745) at java.awt.EventQueue.access$300(EventQueue.java:103) at java.awt.EventQueue$3.run(EventQueue.java:706) at java.awt.EventQueue$3.run(EventQueue.java:704) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:77) at java.awt.EventQueue.dispatchEvent(EventQueue.java:715) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138) at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
This is probably a java related problem. I am currently using openjdk 1.8 while the command "version -java" in MATLAB outputs
>> version -java
ans =
'Java 1.7.0_95-b00 with Oracle Corporation OpenJDK 64-Bit Server VM mixed mode'
I don't know if it matters but I had not licensed MATLAB for the root user.
1 commentaire
Aleti venkatesh
le 25 Jan 2020
sir this type of error i got at the time execution of a program then what can i do sir please help me sir
Réponses (1)
Raymond Chiu
le 24 Oct 2018
Modifié(e) : Raymond Chiu
le 24 Oct 2018
2018b on Ubuntu 16.04
>> version -java
ans =
'Java 1.8.0_152-b16 with Oracle Corporation Java HotSpot™ 64-Bit Server VM mixed mode'
# https://xunyunliu.github.io/post/install_matlab/
#!/usr/bin/env xdg-open
[Desktop Entry]
Type=Application
Icon=/usr/share/icons/matlab.png
Name=MATLAB R2018b
Comment=Start MATLAB - The Language of Technical Computing
Exec=/usr/local/MATLAB/R2018b/bin/matlab -desktop -useStartupFolderPref
/bin/matlab -desktop"
Categories=Development;
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