Wednesday, December 11, 2019

Java.Lang.Noclassdeffounderror: Org/Apache/Xmlbeans/Xmlobject [Solved]

Exception inwards thread "main" java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlObject mistake way that your Java plan needed a flat called org.apache.xmlbeans.XmlObject but JVM is non able to honour that inwards your application's CLASSPATH. You tin laissez passer on notice run into the actual crusade of this mistake is "java.lang.ClassNotFoundException: org.apache.xmlbeans.XmlObject". The most probably argue for this mistake could hold upward a missing JAR file. In fellowship to solve this error, y'all require to showtime honour out which JAR file this flat belongs. If y'all hold off at the mistake message it's clearly maxim that it's from xmlbeans package, it way this flat belongs to XMLBeans library.

Sometime it's non obvious inwards that instance I propose y'all accept payoff of your IDE e.g. Eclipse, Netbeans or IntelliJ IDEA. In Eclipse, y'all tin laissez passer on notice search for a detail flat using Eclipse shortcut Ctrl + T together with hence operate into the elevate of the class.

You simply require to operate into a name, no require to operate into a fully qualified elevate which includes package. Eclipse volition display all the JAR, which receive got flat files amongst the same name, but inwards fellowship to purpose this feature, your application needs to hold upward setup inwards Eclipse amongst all its dependency.

If that's non the instance hence simply Google it together with y'all volition honour which library this JAR belongs to. Now coming dorsum to our master problem, how to cook java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlObject error? Simple, simply include xmlbeans-2.6.0.jar into your program's CLASSPATH. BTW, at that topographic point is simply ane difficulty, how practice y'all select the correct version of JAR? Let's honour out inwards side past times side paragraph.





How to cook java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlObject Error?

I receive got already suggested the uncomplicated solution of this problem, but let's sympathize what causes this work or when practice y'all run into "java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlObject" mistake inwards your program. As I said this mistake comes when your Java plan needs XmlObject flat from xmlbeans library, but the xmlbeans.jar is non available inwards CLASSPATH. This is real full general together with low-level statement. Sometimes this brand feel together with sometimes doesn't? Why? It makes feel when y'all know that y'all are using XMLBeans library let's say for parsing XML documents but it doesn't brand feel when y'all are non doing anything similar that, for example, y'all could instruct " java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlObject Error" spell reading Excel File inwards Java using Apache POI library. Puzzled right? Yes, but y'all require to sympathize something called transitive dependency. You are using Apache POI library to read together with write Excel file inwards Java together with this library internally uses xmlbeans. So fifty-fifty though y'all are non referring whatever XMLbeans classes inwards your Java program, your library is internally using it. Since y'all are non using directly, y'all won't instruct whatever mistake at compile fourth dimension because your the library y'all are using is already compiled, but when y'all run your program, JVM looks for all the binary flat files it needs to execute the program. There it doesn't constitute xmlbeans.jar together with throws the next error

Exception inwards thread "main" java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlObject Caused by: java.lang.ClassNotFoundException: org.apache.xmlbeans.XmlObject at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 2 more

Now, y'all know that inwards fellowship to solve the problem, y'all require to add together JAR file of XMLBeans library inwards your program's CLASSPATH, but the uestion is how practice y'all honour the correct version on which your actual library is subject e.g. Apache POI inwards our case. I propose y'all leverage Maven for managing dependency, hence instead of manually downloading JAR together with adding into create path of your application, simply specify correct dependency inwards your pom.xml file together with allow Maven download those JARs automatically. Maven volition non entirely download the dependency y'all specified but whatever transitive dependency every bit well. For example, if y'all specify apache poi dependency inwards your Maven pom.xml to run your plan which reads information from Excel file hence it volition likewise download the xmlbeans-2.60.jar file. This way, y'all don't require to honour the correct version of library on which other library is dependent.
XmlObject mistake way that your Java plan needed a flat called  java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlObject [Solved]

In brusque :

Error :
Exception inwards thread "main" java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlObject
or
java.lang.ClassNotFoundException: org.apache.xmlbeans.XmlObject

Solution : 
Add xmlbeans-2.60.jar into your classpath or purpose Maven to cope dependency.

That's all nearly how to solve java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlObject and java.lang.ClassNotFoundException: org.apache.xmlbeans.XmlObject error inwards Java. If y'all are using XMLBeans straight or indirectly via whatever other library, all y'all receive got to practice is download xmlbeans-2.60.jar file together with add together into your CLASSPATH, but every bit I suggested its much amend to purpose Maven for managing dependency, it volition non entirely costless y'all from searching together with downloading JARs from mesh but likewise download transitive dependency of whatever opened upward source library y'all are using. 

Further Learning
Complete Java Masterclass
Java Fundamentals: The Java Language
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