I get the following exception when calling Unsafe.putInt:
A needed class was not found. This could be due to an error in your runpath. Missing class: java/lang/InvalidClassException
java.lang.NoClassDefFoundError: java/lang/InvalidClassException
Unsafe lives in rt.jar, but I am unable to find java/lang/InvalidClassException, only java.io.InvalidClassException.
How do I resolve this exception? (if it matters, I'm using jdk 1.7u55)
Thank you for any help.
Update: this is caused by a call to the native method unsafe.arrayBaseOffset. I can work around it by using the static variables: ARRAY_?_BASE_OFFSET, but I don't know why.
Related
Springboot occassionally occur following errors:
Caused by: java.lang.NoClassDefFoundError: Could not initialize class sun.security.jca.ProviderConfig$ProviderLoader
at java.base/sun.security.jca.ProviderConfig$3.run(ProviderConfig.java:244)
at java.base/sun.security.jca.ProviderConfig$3.run(ProviderConfig.java:238)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/sun.security.jca.ProviderConfig.doLoadProvider(ProviderConfig.java:238)
at java.base/sun.security.jca.ProviderConfig.getProvider(ProviderConfig.java:218)
at java.base/sun.security.jca.ProviderList.getProvider(ProviderList.java:266)
at java.base/sun.security.jca.ProviderList$ServiceList.tryGet(ProviderList.java:511)
at java.base/sun.security.jca.ProviderList$ServiceList$1.hasNext(ProviderList.java:565)
at java.base/javax.crypto.SecretKeyFactory.nextSpi(SecretKeyFactory.java:301)
at java.base/javax.crypto.SecretKeyFactory.<init>(SecretKeyFactory.java:121)
at java.base/javax.crypto.SecretKeyFactory.getInstance(SecretKeyFactory.java:168)
at com.kingbase8.shaded.com.ongres.scram.common.ScramMechanisms.saltedPassword(ScramMechanisms.java:155)
at com.kingbase8.shaded.com.ongres.scram.common.ScramFunctions.saltedPassword(ScramFunctions.java:59)
at com.kingbase8.shaded.com.ongres.scram.client.ScramSession$ClientFinalProcessor.<init>(ScramSession.java:196)
at com.kingbase8.shaded.com.ongres.scram.client.ScramSession$ClientFinalProcessor.<init>(ScramSession.java:163)
at com.kingbase8.shaded.com.ongres.scram.client.ScramSession$ServerFirstProcessor.clientFinalProcessor(ScramSession.java:130)
JDK information as following:
enter image description here
Ah, please try to search the log, it is possible a ExceptionInInitializerError was happened before, so this time the JVM throws NoClassDefFoundError directly because it was failed last time.
Need to get the call stack of the original ExceptionInInitializerError (if it exists) in order to fix this issue.
Related codes and links
https://github.com/openjdk/jdk11u/blob/jdk-11+28/src/java.base/share/classes/sun/security/jca/ProviderConfig.java#L308 - the class ProviderConfig$ProviderLoader was defined inside OpenJDK 11 so it is not likely to a Java classpath issue
https://stackoverflow.com/a/5756989/2412606 - See definition of NoClassDefFoundError here. thanks to #oldpeculier and #jared
For this problem not very clear why occur. in order to fix the problem. we can manual use Security.addSecurity method to load jca or analogous component again. like BouncyCastle. now it work fine for me.
I was using Java 11 and the project was build using Java 1.8. Once I switched to Java 1.8 it worked fine
I am doing some maintenance to a JAVA backend written using bundles. When running the code after doing some software upgrade, I get that error at first:
! java.lang.NoSuchMethodError: org.osgi.framework.BundleContext.registerService (Ljava/lang/Class;Lorg/osgi/framework/ServiceFactory;Ljava/util/Dictionary;) Lorg/osgi/framework/ServiceRegistration;
When running it a second time, it gives me the following error:
! java.lang.NoClassDefFoundError: Could not initialize class com.sap.hilo.orchestration.workspace.HiloWorkspaceFactory
Then, it keeps showing the second error for any extra code runs. Any clues how resolve this issue?
Regarding:
java.lang.NoSuchMethodError: org.osgi.framework.BundleContext.registerService
I found an answer to a similar question here: OSGi: servicereference.getBundle().getVersion() - No such method error
In the Import-Package section of the pom.xml file you'll need to change the org.osgi.framework version to at least 1.6 or give it a range [1.6,2.0)
On one of our services, we see the following errors in stderr and communications stop after that.
java.lang.UnsatisfiedLinkError: no net in java.library.path
java.lang.NoClassDefFoundError: Could not initialize class sun.nio.ch.SocketChannelImpl$DefaultOptionsHolder
They go away when the service is restarted, but recur after several hours! What could be causing this?
We're running Oracle's server-jre and I verified that rt.jar contains the class in the error. I have also confirmed that no changes were made to JRE, while the service was running.
NoClassDefFoundError either means the class could not be found, or the class was found and loaded but the static initializer failed when it was called. Your error messages indicate the latter: the class was found, but static initialization failed. There is typically a "Caused by" in this case with the error, and given that you included the UnsatisfiedLinkError, I suspect this is the cause of the problem. As for why that happened, I don't know; it looks like your JRE is corrupt if it was unable to find an internal native library.
I tried to reproduce the attempt to make a capture of a window following :
Java - Window Image
(2 years old post)
I'm using JNA 3.5.0 and tested the unmodified code under XP and 7 with jre 7, and both failed with the same trace :
Exception in thread "main" java.lang.AbstractMethodError:
com.sun.jna.Structure.getFieldOrder()Ljava/util/List;
at com.sun.jna.Structure.fieldOrder(Structure.java:831)
at com.sun.jna.Structure.getFields(Structure.java:857)
at com.sun.jna.Structure.deriveLayout(Structure.java:983)
at com.sun.jna.Structure.calculateSize(Structure.java:908)
at com.sun.jna.Structure.calculateSize(Structure.java:896)
at com.sun.jna.Structure.allocateMemory(Structure.java:357)
at com.sun.jna.Structure.<init>(Structure.java:191)
at com.sun.jna.Structure.<init>(Structure.java:180)
at com.sun.jna.Structure.<init>(Structure.java:167)
at com.sun.jna.Structure.<init>(Structure.java:159)
at com.sun.jna.platform.win32.WinDef$RECT.<init>(WinDef.java:320)
at Paint.capture(Paint.java:24)
at Paint.<init>(Paint.java:71)
at Paint.main(Paint.java:64)
To reproduce it simply just run :
import com.sun.jna.platform.win32.WinDef.RECT;
public class Test {
public static void main(String[] args) {
RECT rect = new RECT();
}
}
If I understand JNA correctly, com.sun.jna.platform.win32.WinDef should be mapped to a system DLL by default.
It seems that the mapping is not correctly done.
I tried to figure out how to map WinDef to needed dll but couldn't find out how to do this with com.sun.jna.Native.loadLibrary method.
I don't understand why a AbstractMethodError is thrown instead of an UnsatisfiedLinkError, so I'm not sure the library loading is really the problem.
Instanciating com.sun.jna.Structure causes the exception, bug I didn't find any information on wether it could be fixed by a native library loading or it is a bug that has another cause.
I thought it could be Windows rights (admin) that my application doesn't acquire.
Or maybe I have to explicitely precise some pathes to jna so that he can find the dlls (but as I said before, it is no UnsatisfiedLinkError so it shouldn't be that).
If you have any experience with JNA and can give me some advice, please answer me.
Given the stacktrace, the understanding of JNA libraries I acquired so far, hours of searches and javadoc exploring, I obviously missed something that a JNA average user could probably find it (the original post is qualified of "Working example").
By the way, if you have any links or resources about jna (didn't find many), please post them :)
Thanks in advance !
I don't know why but it works for me with JNA 3.4.0.
You can find it on MavenRepository http://mvnrepository.com/artifact/net.java.dev.jna
Thanks for your attention
The first line of the error
Exception in thread "main" java.lang.AbstractMethodError:
nearly always indicates a linkage error, that you're using incompatible versions of something.
In this specific case, it appears that platform.jar file released in JNA 3.5.0 was not properly updated.
In Eclipse I get this eror:
Exception in thread "main"
java.lang.UnsatisfiedLinkError:
com.nokia.mid.impl.isa.util.SharedObjects.nativeSetTable(Ljava/util/Hashtable;)Ljava/util/Hashtable;
I can see SharedObjects, but nativeSetTable doesn't seem to be a method. It might however be hidden -> I don't have access to the source code.
This was my code:
connection = (HttpConnection)Connector.open(this.url);
This is the trace:
Exception in thread "main" java.lang.UnsatisfiedLinkError:
com.nokia.mid.impl.isa.util.SharedObjects.nativeSetTable(Ljava/util/Hashtable;)Ljava/util/Hashtable;
at
com.nokia.mid.impl.isa.util.SharedObjects.nativeSetTable(Native
Method) at
com.nokia.mid.impl.isa.util.SharedObjects.createTable(SharedObjects.java:465)
at
com.nokia.mid.impl.isa.util.SharedObjects.(SharedObjects.java:181)
at
com.nokia.mid.impl.isa.io.GeneralSharedIO.(GeneralSharedIO.java:67)
at
com.sun.midp.io.ConnectionBaseAdapter.checkForPermission(ConnectionBaseAdapter.java:236)
at
com.sun.midp.io.ConnectionBaseAdapter.openPrim(ConnectionBaseAdapter.java:205)
at
com.sun.midp.io.ConnectionBaseAdapter.openPrim(ConnectionBaseAdapter.java:178)
at
com.sun.midp.io.InternalConnector.openPrim(InternalConnector.java:254)
at
com.sun.midp.io.InternalConnector.open(InternalConnector.java:153)
at
javax.microedition.io.Connector.open(Connector.java:138)
at
javax.microedition.io.Connector.open(Connector.java:120)
at
javax.microedition.io.Connector.open(Connector.java:104)
I think that nativeSetTable() is protected or private, that's why you don't see it. And moreover nativeSetTable() is a native method, which means that it is based on native code (already compiled for a specific processor and available in a specific lib [ie. a DLL]).
UnsatisfiedLinkError means that this particular method couldn't be retrieved and executed properly.
Thrown if the Java Virtual Machine cannot find an appropriate native-language definition of a method declared native.
This means that your Java ME emulator must have missing librairies. You should try to reinstall it.
Resources :
Javadoc - UnsatisfiedLinkError
I guess you are coupling your source code with the wrong version of the nokia mid library.
It could be that your runtime classpath is using a different version of the jar where SharedObjects lives, when compared to your compile-time classpath in Eclipse. I would double-check your classpath settings.
Ok, I found one reason:
I created a test class in java to test my code, just a plain java file (with main method). And I ran it as a plain java application. Then, it doesn't work. But after I tried it in a Midlet, I didn't get the error!