Errors on my command window for every click and selection of a block in simulink and simscape

6 次查看（过去 30 天）
Benjamin Aboagye
Benjamin Aboagye 2022-3-21
编辑： Anjaneyulu Bairi 2024-1-10
When I open matlab I get an error on my command window. This error keeps coming whenever I am working on simulink, that is, whenever I select a component or a block or even when I hover over a component. This is the details of the error.
Error using dig.isProductInstalled>getProductNames (line 58)
Java exception occurred:
java.lang.NoClassDefFoundError: com/mathworks/instutil/MinimalProducts
at
com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.createInjector(Unknown
Source)
at
com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.executeTask(Unknown
Source)
at
com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.access$300(Unknown
Source)
at
com.mathworks.install_impl.InstalledProductFactory.getInstalledProducts(Unknown
Source)
Caused by: java.lang.ClassNotFoundException:
com.mathworks.instutil.MinimalProducts
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 4 more
Error in dig.isProductInstalled (line 44)
productNames = getProductNames;
Error in slSingleSelectionActionConfig
Error using dig.isProductInstalled>getProductNames (line 58)
Java exception occurred:
java.lang.NoClassDefFoundError: com/mathworks/instutil/MinimalProducts
at
com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.createInjector(Unknown
Source)
at
com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.executeTask(Unknown
Source)
at
com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.access$300(Unknown
Source)
at
com.mathworks.install_impl.InstalledProductFactory.getInstalledProducts(Unknown
Source)
Caused by: java.lang.ClassNotFoundException:
com.mathworks.instutil.MinimalProducts
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 4 more
Error in dig.isProductInstalled (line 44)
productNames = getProductNames;
Error in slSingleSelectionActionConfig
Error using dig.isProductInstalled>getProductNames (line 58)
Java exception occurred:
java.lang.NoClassDefFoundError: com/mathworks/instutil/MinimalProducts
at
com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.createInjector(Unknown
Source)
at
com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.executeTask(Unknown
Source)
at
com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.access$300(Unknown
Source)
at
com.mathworks.install_impl.InstalledProductFactory.getInstalledProducts(Unknown
Source)
Caused by: java.lang.ClassNotFoundException:
com.mathworks.instutil.MinimalProducts
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 4 more
Error in dig.isProductInstalled (line 44)
productNames = getProductNames;
Error in slSingleSelectionActionConfig
Error using dig.isProductInstalled>getProductNames (line 58)
Java exception occurred:
java.lang.NoClassDefFoundError: com/mathworks/instutil/MinimalProducts
at
com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.createInjector(Unknown
Source)
at
com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.executeTask(Unknown
Source)
at
com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.access$300(Unknown
Source)
at
com.mathworks.install_impl.InstalledProductFactory.getInstalledProducts(Unknown
Source)
Caused by: java.lang.ClassNotFoundException:
com.mathworks.instutil.MinimalProducts
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 4 more

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回答（1 个）

Anjaneyulu Bairi
Anjaneyulu Bairi 2024-1-10
编辑：Anjaneyulu Bairi 2024-1-10
Hi,
I understand that you are getting errors on command window which is related to java class not found error. The "NoClassDefFoundError” is thrown because MATLAB couldn’t find Java Runtime libraries and the possible reasons are listed below.
  • Missing of some .jar files in MATLAB Installation folder and to add any jar file to the path execute below command.
javaaddpath(‘jar_file_path’);
  • There are no references of JAR files in “classpath.txt” to JAVA Runtime libraries so add references of jar libraries in classpath.txt.
  • MATLAB search path may cause this issue sometimes, so restore the default search path by executing below command.
restoredefaultpath
If error persists, Uninstall the MATLAB and re-install it.
Hope it helps to resolve your query.

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