I create simple FXML in java and make little bit change of it like adding framework maven into project and changing FXML file into resource folder but when I try to run it it gives following errors.
Exception in thread "main" java.lang.ClassNotFoundException: sample.Main
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:260)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:123)
But I change package's name from sample to other name. When I make name of package into sample it works fine but When I change it other name it dosn't work. what might be problem here??
Related
I am building a software in Java and JavaFX. It generates PDF reports (with DynamicReports) then uses SendGrid API to send to send them. I have already added the SendGrid API .jar file to the classpath.
The problem is that my JavaFX application crashes when I instanciate my subclass of SengGrid. As you can see:
Exception in thread "JavaFX Application Thread" java.lang.NoClassDefFoundError: com/sendgrid/SendGrid$Email
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at Reporting.TableReport.lambda$build$0(TableReport.java:160)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: com.sendgrid.SendGrid$Email
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 20 more
Now the interesting part is that the API works perfectly when I call it from a non JavaFX project. And more interestingly, it also works when I call it from a "console" main class inside the very same JavaFX project.
So far, I have tried to call that "console" main from my JavaFX code as a sort of static method that would fulfill my task (sending the PDF files). But again, I encounter the very same exception.
Can anyone suggest a solution to solve this ? (or at least go around it)
Turns out it was an issue with Netbeans. Using the exact same code with Eclipse works perfectly. I couldn't find an explanation but I'm giving this answer for anyone who might stumble upon the same issue as me.
I am trying deploying a runnable JAR file on Openshift server, my runnable JAR file contains a cron job, its functionality is to read data from database at certain time I place mysql-connector-jar in my JAR file and deployed on my openshift application, when running I am getting following exception. In my cron job.
Exception in thread "main" java.lang.NoClassDefFoundError: com/mysql/jdbc/jdbc2/optional/MysqlDataSource
at com.fs.sstore.communicator.cronjob.db.DataSourceFactory.getMySQLDataSource(DataSourceFactory.java:46)
at com.fs.sstore.communicator.cronjob.db.DBManager.fetchScheduleRecharges(DBManager.java:29)
at com.fs.sstore.communicator.cronjob.RechargeScheduler.scheduleRecharge(RechargeScheduler.java:15)
at com.fs.sstore.communicator.cronjob.RechargeScheduler.<init>(RechargeScheduler.java:9)
at com.fs.sstore.communicator.cronjob.RechargeScheduler.main(RechargeScheduler.java:22)
Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.jdbc2.optional.MysqlDataSource
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 5 more
I have a simple java file packaged as a Jar on a server called by a PHP script. I have the "json-simple-1.1.1" library included in my java program. However, when I run it gives me the below error. I've added the json-simple jar to my project and import the correct classes. From what I've read it doesn't seem to be adding the json-simple library to my manifest file. Any ideas on how to fix this. I'm using eclipse if that helps.
Exception in thread "main" java.lang.NoClassDefFoundError: org/json/simple/parser/ParseException
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2570)
at java.lang.Class.getMethod0(Class.java:2813)
at java.lang.Class.getMethod(Class.java:1663)
at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:494)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:486)
Caused by: java.lang.ClassNotFoundException: org.json.simple.parser.ParseException
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)
Your library is probably not been loaded by classloader, so, if it is not in WEB-INF/lib, right click it and Add to build Path.
I am following this tutorial:
https://code.google.com/p/quickserver/wiki/QuickStartTutor
but when I execute java -jar QuickServer.jar -load HelloWorld.xml
I get this error:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/pool/PoolableObjectFactory at
java.lang.Class.getDeclaredMethods0(Native Method) at
java.lang.Class.privateGetDeclaredMethods(Class.java:2531) at
java.lang.Class.getMethod0(Class.java:2774) at
java.lang.Class.getMethod(Class.java:1663) at
sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:494) at
sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:486)
Caused by: java.lang.ClassNotFoundException:
org.apache.commons.pool.PoolableObjectFactory 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) ... 6 more
How can I solve that?
The exception exactly says your problem: that class cannot be found on the application classpath, hence the ClassNotFoundException.
You need to put all the dependent jars onto the application classpath. In this exact exception, the commons-pool.jar Apache library is missing.
The developers guide states, that the Digester and Pool Jakarta Commons Components are dependencies of QuickServer.
It sounds like you are executing this from a folder that does not also have the supporting jars. Ie, the following files must be in the same folder as QuickServer.jar as well:
commons-digester.jar
commons-collections.jar
commons-beanutils.jar
commons-logging.jar
commons-pool.jar
I am trying to add all the jar files in the directory below but I get
Exception in thread "main" java.lang.NoClassDefFoundError: twitter4j/TwitterException error.
I am sure there is TwitterException class inside the .jar file. Is there any error in my classpath syntax ?
mahmut#ubuntu:~/Desktop/Java/TwitterDeneme/bin$ java -classpath "~/twitter4j-2.2.6/lib/*.jar:." GetHashtag
Exception in thread "main" java.lang.NoClassDefFoundError: twitter4j/TwitterException
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2442)
at java.lang.Class.getMethod0(Class.java:2685)
at java.lang.Class.getMethod(Class.java:1620)
at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:488)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:480)
Caused by: java.lang.ClassNotFoundException: twitter4j.TwitterException
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)
... 6 more
I am using ubuntu and jdk 1.7. I tried the same command in windows and it works flawlessly. Is there anything special to do related to Ubuntu OS?
The * syntax for classpaths is rather limited. Try:
java -classpath "~/twitter4j-2.2.6/lib/*:." GetHashtag