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NoClassDefFoundError org/apache/poi/ss/usermodel/Workbook

I am running a shell script which calls a java class to get some data from database and create an excel report with that data. I get the error Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/poi/ss/usermodel/Workbook when the code hits the below line in my java class:
XSSFWorkbook workbook = new XSSFWorkbook ();
This is how I have defined the classpath:
CLASSPATH=${CLASSPATH}:<path-to-jars>/poi-2.5.1-final-20040804.jar
CLASSPATH=${CLASSPATH}:<path-to-jars>/poi-ooxml-3.11.jar
I verified that the jars have been downloaded(via gradle), so trying to understand what am I missing here. Can someone please help me with this?
Stacktrace:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/poi/ss/usermodel/Workbook
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
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.test.ExcelReportGenerator.writeExcel(ExcelReportGenerator.java:26)
at com.test.ReportRunner.createReport(ReportRunner.java:109)
at com.test.ReportRunner.main(ReportRunner.java:93)
Caused by: java.lang.ClassNotFoundException: org.apache.poi.ss.usermodel.Workbook
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
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)
... 15 more

As per this Apache POI FAQ entry, mixing POI jars between different versions is not supported and will break in all sorts of ways, such as the one you've found. Don't do it!
You need to be using your POI jars all from the same release. I'd suggest the latest version, available here (currently 3.15)
You should probably also review the components and their dependencies page, to ensure you've got all the required jars for your use of Apache POI. Well, or use a dependency management tool like Maven or Gradle to handle that for you!

I have downloaded the latest Apache POI binaries v3.17 here and it has all the required jars to create xlsx file and open with out any fuss.
Required jars are shown in below screenshots (refer to selected jars) FYR.

For apache poi to work, you need compatible jars.
I used these jars
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-scratchpad</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>ooxml-schemas</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>openxml4j</artifactId>
<version>1.0-beta</version>
</dependency>

Delete the poi jar from your maven repository and download or build the project again.

poi 2.5.1 had no such package (and consequently a class) included (you can verify by unpacking the jar files as they are essentially zip archives). See the source.
Update the poi dependency to release 3. This also has the added benefit of matching the ooxml version.

Solrj - cannot inherit from final class error due to HTTPSolrServer

I have been using Solr version 4.10.2. I added solrj version 4.10.2 by using maven (pom.xml)
<dependency>
<groupId>org.apache.solr</groupId>
<artifactId>solr-solrj</artifactId>
<version>4.10.2</version>
<scope>compile</scope>
</dependency>
These are maven dependencies that are installed:
solr-solrj-4.10.2.jar
httpclient-4.3.1.jar
httpcore-4.3.jar
httpmime-4.3.1.jar
wstx-asl-3.2.7.jar
wstx-asl-3.2.7.jar
noggit-0.5.jar
When I define solr http path, l get and exception:
Exception in thread "main" java.lang.VerifyError: Cannot inherit from final class
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
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 org.apache.http.impl.client.DefaultHttpClient.createHttpParams(DefaultHttpClient.java:157)
at org.apache.http.impl.client.AbstractHttpClient.getParams(AbstractHttpClient.java:447)
at org.apache.solr.client.solrj.impl.HttpClientUtil.setFollowRedirects(HttpClientUtil.java:260)
at org.apache.solr.client.solrj.impl.HttpClientConfigurer.configure(HttpClientConfigurer.java:60)
at org.apache.solr.client.solrj.impl.HttpClientUtil.configureClient(HttpClientUtil.java:142)
at org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:118)
at org.apache.solr.client.solrj.impl.HttpSolrServer.<init>(HttpSolrServer.java:168)
at org.apache.solr.client.solrj.impl.HttpSolrServer.<init>(HttpSolrServer.java:141)
at addIndex.main(addIndex.java:10)
This is how I define solr path:
HttpSolrServer server = new HttpSolrServer("http://localhost:8983/solr"); or
HttpSolrServer server = new HttpSolrServer("http://localhost:8983/solr/#/collection1");
Is there another way to make a connection with java project? What is the reason that I get this exception?

If you're connecting to Solr (and using SolrJ as the client library), you're supposed to instantiate HttpSolrClient:
String urlString = "http://localhost:8983/solr/collection1";
SolrClient solr = new HttpSolrClient(urlString);
BTW: Anchors in URLs (such as #foo) is meant for clients only (such as browsers), and are not meant to be (and thus, isn't, usually) transmitted as part of the request.

Netty class not found exception while executing JAR

I've made JAR file from a project I made, however when I try to execute it, it gives:
Exception in thread "main" java.lang.NoClassDefFoundError: org/jboss/netty/channel/socket/ServerSocketChannelFactory
at org.ddosdefense.httpfilter.HTTPInterceptor.main(HTTPInterceptor.java:66)
Caused by: java.lang.ClassNotFoundException: org.jboss.netty.channel.socket.ServerSocketChannelFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
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)
... 1 more
Inside the jar file all the libraries are present.
In the .classpath file the netty jar library is present:
<classpathentry kind="lib" path="ddos2_lib/netty-3.6.2.Final.jar"/>
When I execute the project in eclipse it works perfectly. Anyone has an idea how to solve this problem?
Thanks in advance!

Most likely you don't have the jar packaged into the jar you produce or missed to specify the netty jar via the -cp option.

Which jars are required for embedded Neo4j?

I'm looking for an updated answer to this question. Previously, a minimal Neo4j "Hello World" app required two jars. Now it apparently requires some other jars, but I don't know which ones.
If I include neo4j-kernel-2.1.2 and geronimo-jta_1.1_spec-1.1.1 as suggested in that other question, I get this error:
java.lang.ClassNotFoundException: org.neo4j.collection.primitive.PrimitiveLongIterator
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
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)
If I add neo4j-primitive-collections-2.1.2, I then get an error with this root cause:
Caused by: java.lang.IllegalArgumentException: No schema index provider org.neo4j.kernel.api.index.SchemaIndexProvider found.
Answers on this question suggest I need neo4j-lucene-index. When I add that jar, I get this error:
Caused by: java.lang.ClassNotFoundException: org.apache.lucene.store.Directory
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
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)
Finally, when I add lucene-core, I get this error:
Caused by: java.lang.ClassNotFoundException: org.apache.lucene.document.Fieldable
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
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)
What do I need to add to get past that?

I believe I've found the minimal set of dependencies for Neo4j 2.x. I was originally trying to use lucene-core-4.9.0, but the org.apache.lucene.document.Fieldable interface was removed from that library sometime after version 3.6.2. The minimal set of jars is thus:
neo4j-kernel (2.1.2)
neo4j-primitive-collections (2.1.2)
neo4j-lucene-index (2.1.2)
lucene-core (3.6.2)
jta (1.1)
These weigh in at about 4.5 MB, which is larger than I'd like, but I guess I can live with it. I've also been told that neo4j-lucene-index (which is what requires lucene-core) is not strictly required. Like jta, it's actually only one possible implementation of a required interface. But I don't know of any other implementation.

As the other answer correctly mention the most easy way is use a build tool featuring a dependency manager. Most widely these days used are Maven and Gradle. Both use Maven Central repository by default to pull dependencies and transitive dependencies.
Depending whether your embedded application uses cypher or not you should add the following dependencies your pom.xml:
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-lucene-index</artifactId>
<version>2.1.2</version>
</dependency>
or (when cypher is used):
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-cypher</artifactId>
<version>2.1.2</version>
</dependency>
Both of them transitively include all necessary libraries.

Sending information from Java to Java script?

I've been trying to send information from Java to Java script using the JSObject but i keep receiving a java.lang.ClassNotFoundException: com.sun.deploy.appcontext.AppContext exception i'm using netbeans 7.1.
Here is the full stack trace
java.lang.NoClassDefFoundError: com/sun/deploy/appcontext/AppContext
at MapTest.MapApplet.init(MapApplet.java:23)
at sun.applet.AppletPanel.run(AppletPanel.java:434)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.ClassNotFoundException: com.sun.deploy.appcontext.AppContext
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 3 more
It is referring to this line of code
win = JSObject.getWindow(this);
These are all my imports
import netscape.javascript.JSObject;
import java.lang.*;
import java.applet.*;
import java.awt.Graphics;
I really need help with this can't seem to find solutions anywhere.
Thanks.

I came across a similar error and was able to solve it by adding deploy.jar found in the local Java install to the project build path. Not sure how to do this in netbeans but for others using maven you can try adding the folowing dependency:
<dependency>
<groupId>sun</groupId>
<artifactId>deploy</artifactId>
<version>7.0</version>
<scope>system</scope>
<systemPath>${java.home}/lib/deploy.jar</systemPath>
</dependency>