Brtdku

I have finished a project in java that use POI 4.0.1 library. I am using a Mac, Eclipse and Java 8 update 201. I do not use Maven or similar. I’ve already read all the 22 past post about the argument but I can’t find a solution. When I test the program (composed by 10 classes with the main) with Eclipse, no problem. All it’s work. But when I try to launch the application from the command line I obtain the following error:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/poi/ss/usermodel/Workbook

at Applicazione.main(Applicazione.java:17)

Caused by: java.lang.ClassNotFoundException: org.apache.poi.ss.usermodel.Workbook

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)

... 1 more

I've already imported in Eclipse all the useful jar from POI. In particular:

• POI-4.0.1.jar


• POI-ooxml.jar


• POI-excelant.jar


• POI-ooxml-schemas-4.0.1.jar


• POI-scratchpad.jar

I tried various combinations of the previous jar. I tried to add xmlbeans-3.0.2.jar and others from lib folder. But nothing. In Eclipse it works but from command line no.
I also tried to move the POI folder in Java folder. Nothing is changed.

I also found a file in my project named .classpath. If it can be helpful the content is the following:

<?xml version="1.0" encoding="UTF-8"?>

<classpath>

<classpathentry kind="con"      path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>

<classpathentry kind="src" path="src"/>

<classpathentry kind="lib" path="/Users/path/Desktop/App/poi-4.0.1/poi-4.0.1.jar"/>

<classpathentry kind="lib" path="/Users/path/Desktop/App/poi-4.0.1/poi-ooxml-4.0.1.jar"/>

<classpathentry kind="lib" path="/Users/path/Desktop/App/poi-4.0.1/poi-examples-4.0.1.jar"/>

<classpathentry kind="lib" path="/Users/path/Desktop/App/poi-4.0.1/poi-excelant-4.0.1.jar"/>

<classpathentry kind="lib" path="/Users/path/Desktop/App/poi-4.0.1/poi-ooxml-schemas-4.0.1.jar"/>

</classpath>

Thanks

You need to ensure that libraries that you used are on the class path when running in command line. Since all POI libraries are in the /Users/path/Desktop/App/poi-4.0.1 director you can use:

java -cp "/Users/path/Desktop/App/poi-4.0.1:." Applicazione

There is no magic to java.lang.NoClassDefFoundError. You simply don't have the right class path.