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Trying to add log4j in plugin type project. Error : java.lang.NoClassDefFoundError: org/apache/log4j/PropertyConfigurator

I am trying to add Log4j.jar in plugin project for logging purpose. I add the log4j jar by using build path->add external jar. After that I am trying to run the plugin project I get error
java.lang.NoClassDefFoundError: org/apache/log4j/PropertyConfigurator.
if I run the same code by using java main method it will working fine.
public HHLogger(Object className) {
DateTimeFormatter df = DateTimeFormatter.ofPattern("ddMMYYYY");
System.setProperty("filename", df.format(LocalDate.now()));
PropertyConfigurator.configure(".\\resources\\log4j.properties");
logger = Logger.getLogger(className.getClass());
}
public static void main(String args[]) {
DateTimeFormatter df = DateTimeFormatter.ofPattern("ddMMYYYY");
System.setProperty("filename", df.format(LocalDate.now()));
PropertyConfigurator.configure(".\\resources\\log4j.properties");
logger = Logger.getLogger(HHLogger.class);
logger.info(" 999 Welcom");
}
java.lang.NoClassDefFoundError: org/apache/log4j/PropertyConfigurator
at com.americanexpress.connecthotelforgbt.utility.HHLogger.(HHLogger.java:22)
at com.americanexpress.connecthotelforgbt.parsers.OhhRqRsParser.(OhhRqRsParser.java:104)
at com.americanexpress.connecthotelforgbt.DataIntelliSense.upshellcommand(DataIntelliSense.java:322)
at com.americanexpress.connecthotelforgbt.listener.CommandModificationService.process(CommandModificationService.java:102)
at com.sabre.edge.cf.core.executors.PublicServiceExecutor.decide(PublicServiceExecutor.java:143)
at org.jbpm.graph.node.Decision.execute(Decision.java:85)
at org.jbpm.graph.def.Node.enter(Node.java:314)
at org.jbpm.graph.def.Transition.take(Transition.java:151)
at org.jbpm.graph.def.Node.leave(Node.java:389)
at org.jbpm.graph.node.StartState.leave(StartState.java:70)
at org.jbpm.graph.exe.Token.signal(Token.java:192)
at org.jbpm.graph.exe.Token.signal(Token.java:140)
at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:271)
at com.sabre.edge.cf.core.flow.JBPMFlowExecutor.execute(JBPMFlowExecutor.java:45)
at com.sabre.edge.cf.core.SRWRuntime.executeWorkflow(SRWRuntime.java:238)
at com.sabre.edge.cf.core.SRWRuntime.process(SRWRuntime.java:173)
at com.sabre.edge.cf.emu.bridge.EmulatorBridge.processServiceContext(EmulatorBridge.java:198)
at com.sabre.edge.cf.emu.bridge.EmulatorBridge.updateCommand(EmulatorBridge.java:87)
at com.sabre.stn.emulator.core.bridge.BridgeFilter.preSend(BridgeFilter.java:80)
at com.sabre.stn.emulator.basic.model.BasicEmulatorModel.sendPreProcess(BasicEmulatorModel.java:3737)
at com.sabre.stn.emulator.basic.model.BasicEmulatorModel.sendMessage(BasicEmulatorModel.java:3596)
at com.sabre.stn.emulator.basic.model.BasicEmulatorModel.doEnter(BasicEmulatorModel.java:3516)
at com.sabre.stn.emulator.basic.model.BasicEmulatorModel.enter(BasicEmulatorModel.java:1749)
at com.sabre.stn.emulator.basic.BasicEmulator.enter(BasicEmulator.java:1979)
at com.sabre.stn.emulator.core.EmuManager.emptyTheKeyBuffer(EmuManager.java:1132)
at com.sabre.stn.emulator.core.KeysToScreenThread.run(KeysToScreenThread.java:78)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.PropertyConfigurator
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:506)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 26 more

The error message is clear, it can not find the class file of PropertyConfigurator
make sure that the class file PropertyConfiguratoris in your classpath, or the same applies if it is in a jar file . it indicates, that PropertyConfigurator was found at compiletime but not at runtime. maybe you just have to add it to the classpath.
Please see this can help: How to solve java.lang.NoClassDefFoundError?
ps: if the two classes are on the same file, you can not do that, because both are public.

java.lang.NoClassDefFoundError: javax/json/Json no maven or IDE

I am trying a simple json java program (no maven or IDE).
This is my java file:
import javax.json.*;
import javax.json.Json;
import javax.json.JsonObject;
import javax.json.JsonObjectBuilder;
import javax.json.JsonWriter;
class JsonTest {
public static void main(String[] args){
JsonObject obj = Json.createObjectBuilder()
.add("name", "foo")
.add("num", new Integer(100))
.add("balance", new Double(1000.21))
.add("is_vip", new Boolean(true)).build();
System.out.print(obj);
}
}
In the same directory of this file, I have the jar file:
javax.json-1.0.jar
I don't get any error in compiling:
javac -classpath ./javax.json-1.0.jar JsonTest.java
But when I run the program I get the error:
Exception in thread "main" java.lang.NoClassDefFoundError: javax/json/Json
at JsonTest.main(JsonTest.java:10)
Caused by: java.lang.ClassNotFoundException: javax.json.Json
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)
... 1 more
Why am I getting this error when there was no error in compilation. I already searched other questions with this error but unlike them I am not using any IDE or maven. Any help will be appreciated.

You are not running it with the JSON JAR file on the classpath.
Try this:
java -classpath .:./javax.json-1.0.jar JsonTest
Change : to ; on Windows ....

NoClassDefFoundError eventhough class in in same folder

I executed a main class and got the following error and trace.
This is the console command:
java -cp . net.sf.tinyPayroll.Main
Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class org.hsqldb.Trace
at org.hsqldb.Database.reopen(Unknown Source)
at org.hsqldb.Database.open(Unknown Source)
at org.hsqldb.DatabaseManager.getDatabase(Unknown Source)
at org.hsqldb.DatabaseManager.newSession(Unknown Source)
at org.hsqldb.jdbc.jdbcConnection.<init>(Unknown Source)
at org.hsqldb.jdbcDriver.getConnection(Unknown Source)
at org.hsqldb.jdbcDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at net.sf.tinyPayroll.dao.DBConnector.connectDataFile(DBConnector.java:88)
at net.sf.tinyPayroll.dao.DBConnector.<init>(DBConnector.java:72)
at net.sf.tinyPayroll.dao.DBConnector.getInstance(DBConnector.java:106)
at net.sf.tinyPayroll.model.DataFile.<init>(DataFile.java:53)
at net.sf.tinyPayroll.Main.main(Main.java:42)
However, all the necessary classes are in the same folder.
Here is the file which is extracted and available in the same folder (the entire library is available in extracted form).
find . -name Trace*
./org/hsqldb/Trace.class
./org/hsqldb/util/Traceable.class

Your exception is:
NoClassDefFoundError: Could not initialize class org.hsqldb.Trace
Which doesn't mean that it cannot find the class org.hsqldb.Trace in your classpath, it means that the class could not be initialized for some reason.
It generally means that a RuntimeException was thrown while either trying to assign a value to a static field or while trying to execute some code in a static block.
For example we will get such issue in the next cases:
class Trace {
static MyClass foo = MyClass.newInstance(); // If it fails while calling newInstance
static {
SomeClass.init(); // If it fails while calling SomeClass.init()
}
...
}

As Nicolas has mentioned this doesn't mean that it cannot find the class org.hsqldb.Trace in your classpath, it means that the class could not be initialized for some reason.
I've checked the code (This might change based on version) http://grepcode.com/file/repo1.maven.org/maven2/hsqldb/hsqldb/1.8.0.1/org/hsqldb/Trace.java
In the class it has some static block which do some processing. Most probably some of the resources are missing in your class path

java.lang.RuntimeException: java.lang.ClassNotFoundException: <org.objectweb.asm.ClassWriter.getCommonSuperClass(Unknown Source)>

I get following exception with new cobertura (2.0.2..). I guess it is some how related to new object creation immediately in a new block.
WARN instrumentClass, Unable to instrument file c:\apps\ijprojects\TrickyInstrument\out\production\TrickyInstrument\InstrumentationFailsOnFirstNewClassInTryBlock.class
java.lang.RuntimeException: java.lang.ClassNotFoundException: DataAccess
at org.objectweb.asm.ClassWriter.getCommonSuperClass(Unknown Source)
at org.objectweb.asm.ClassWriter.a(Unknown Source)
at org.objectweb.asm.Frame.a(Unknown Source)
at org.objectweb.asm.Frame.a(Unknown Source)
at org.objectweb.asm.MethodWriter.visitMaxs(Unknown Source)
at org.objectweb.asm.MethodVisitor.visitMaxs(Unknown Source)
at org.objectweb.asm.util.CheckMethodAdapter.visitMaxs(Unknown Source)
at org.objectweb.asm.MethodVisitor.visitMaxs(Unknown Source)
at org.objectweb.asm.commons.LocalVariablesSorter.visitMaxs(Unknown Source)
at org.objectweb.asm.tree.MethodNode.accept(Unknown Source)
at org.objectweb.asm.util.CheckMethodAdapter$1.visitEnd(Unknown Source)
at org.objectweb.asm.MethodVisitor.visitEnd(Unknown Source)
at org.objectweb.asm.util.CheckMethodAdapter.visitEnd(Unknown Source)
at org.objectweb.asm.ClassReader.b(Unknown Source)
at org.objectweb.asm.ClassReader.accept(Unknown Source)
at org.objectweb.asm.ClassReader.accept(Unknown Source)
at net.sourceforge.cobertura.instrument.CoberturaInstrumenter.instrumentClass(CoberturaInstrumenter.java:204)
at net.sourceforge.cobertura.instrument.CoberturaInstrumenter.instrumentClass(CoberturaInstrumenter.java:121)
at net.sourceforge.cobertura.instrument.CoberturaInstrumenter.addInstrumentationToSingleClass(CoberturaInstrumenter.java:233)
at net.sourceforge.cobertura.instrument.Main.addInstrumentationToSingleClass(Main.java:274)
at net.sourceforge.cobertura.instrument.Main.addInstrumentation(Main.java:283)
at net.sourceforge.cobertura.instrument.Main.addInstrumentation(Main.java:292)
at net.sourceforge.cobertura.instrument.Main.parseArguments(Main.java:373)
at net.sourceforge.cobertura.instrument.Main.main(Main.java:395)
8 Jul, 2013 2:05:07 PM net.sourceforge.cobertura.coveragedata.CoverageDataFileHandler saveCoverageData
INFO: Cobertura: Saved information on 2 classes.
The following is the code related to above exception.
public class InstrumentationFailsOnFirstNewClassInTryBlock {
public void saveToDatabase() {
//
try {
// boolean b=false;
// if ( b) {
// System.out.println("no action");
// }
DataAccess da = new DataAccess();
System.out.println("nothing");
} catch (Exception e) {
}
}
}
class DataAccess {
public DataAccess() {
//To change body of created methods use File | Settings | File Templates.
}
}
If I un-comment the code block some dummy statements , then instrumentation works fine. Has any one seen this? Any potential fixes?
Edit: Error occurs with java6 and java7.

Original problem was due to a Cobertura defect. It is not fixed. Cobertura now supports an additional argument for auxillary classpath.. This will be used to resolve any classes required for instrumentation.
cobertura-ant task documentation
Adding auxClasspath
auxClasspath argument is designed to remove the ClassNotFoundException
during instrumentation. See
https://github.com/cobertura/cobertura/wiki/FAQ#classnotfoundexception-during-instrumentation
for more information on this argument

I had a similar issue, and it may be a bug, see: https://github.com/cobertura/cobertura/issues/49
Your test case may be useful to debug the issue...

From https://github.com/cobertura/cobertura/wiki/FAQ#classnotfoundexception-during-instrumentation:
"This is because during instrumentation in cobertura 2.0, we use ASM to rebuild the .class files. We rebuild the stackmap which is a requirement to be compatible with java 7 and anything after. This does not mean that we recompile the code, however ASM requires that we provide the binaries of the other classes just in case it needs to look up any super methods. To fix this we use an argument called auxClasspath."
Adding the following code to your ant file (build.xml) should resolve the issue.
<path id="cobertura.auxpath">
<pathelement location="${bin}"/>
</path>
<target name="instrument_coverage" depends="init_coverage"
description="Instruments source code for coverage measurement">
<cobertura-instrument datafile="${coverage.datafile}">
<fileset refid="coverage-files"/>
<auxClasspath>
<path refid="cobertura.auxpath" />
</auxClasspath>
</cobertura-instrument>
</target>
This worked for me.

Why is WSDL parser still importing external documents?

I tried to turn off importing documents in WSDL4J (1.6.2) in the way suggested
by the API documentation:
wsdlReader.setFeature("javax.wsdl.importDocuments", false);
In fact, it stops importing XML schema files declared with wsdl:import tag, but does stop importing files declared with xs:import tags.
The following code snippet [see at the end of the letter] for the example file
http://www.ibspan.waw.pl/~gawinec/example.wsdl
returns the following exception:
javax.wsdl.WSDLException: WSDLException (at /definitions/types/xs:schema):
faultCode=OTHER_ERROR: An error occurred trying to resolve schema referenced
at 'EchoExceptions.xsd', relative to
'http://www.ibspan.waw.pl/~gawinec/example.wsdl'.:
java.io.FileNotFoundException: This file was not found:
http://www.ibspan.waw.pl/~gawinec/EchoExceptions.xsd
at com.ibm.wsdl.xml.WSDLReaderImpl.parseSchema(Unknown Source)
at com.ibm.wsdl.xml.WSDLReaderImpl.parseSchema(Unknown Source)
at com.ibm.wsdl.xml.WSDLReaderImpl.parseTypes(Unknown Source)
at com.ibm.wsdl.xml.WSDLReaderImpl.parseDefinitions(Unknown Source)
at com.ibm.wsdl.xml.WSDLReaderImpl.readWSDL(Unknown Source)
at com.ibm.wsdl.xml.WSDLReaderImpl.readWSDL(Unknown Source)
at com.ibm.wsdl.xml.WSDLReaderImpl.readWSDL(Unknown Source)
at com.ibm.wsdl.xml.WSDLReaderImpl.readWSDL(Unknown Source)
at com.ibm.wsdl.xml.WSDLReaderImpl.readWSDL(Unknown Source)
at IsolatedExample.main(IsolatedExample.java:15)
Caused by: java.io.FileNotFoundException: This file was not found:
http://www.ibspan.waw.pl/~gawinec/EchoExceptions.xsd
at com.ibm.wsdl.util.StringUtils.getContentAsInputStream(Unknown Source)
... 10 more
Can you suggest me any solution to this problem? I just don't want to import
external XML schemata.
Regards,
Maciej
import javax.wsdl.WSDLException;
import javax.wsdl.factory.WSDLFactory;
import javax.wsdl.xml.WSDLReader;
public class IsolatedExample {
public static void main(String[] args) {
WSDLFactory wsdlFactory;
try {
wsdlFactory = WSDLFactory.newInstance();
WSDLReader wsdlReader = wsdlFactory.newWSDLReader();
wsdlReader.setFeature("javax.wsdl.verbose", false);
wsdlReader.setFeature("javax.wsdl.importDocuments", false);
wsdlReader.readWSDL("http://www.ibspan.waw.pl/~gawinec/example.wsdl");
} catch (WSDLException e) {
e.printStackTrace();
}
}
}

A quick look at WSDL4J (it's been a while since I've worked directly with this project) suggests that there is no option specifically to prevent the reading of imported schemas. You may have stumbled upon on a bug in WSDL4J's mechanism of deserializing schemas. That said, if you're not interested in the contents of any schemas, including those inlined in the WSDL document, you can register your own extension registry (simply modify the PopulatedExtensionRegistry class to leave out the SchemaDeserializer).
Specifically, leave out the following lines:
mapExtensionTypes(Types.class, SchemaConstants.Q_ELEM_XSD_1999,
SchemaImpl.class);
registerDeserializer(Types.class, SchemaConstants.Q_ELEM_XSD_1999,
new SchemaDeserializer());
registerSerializer(Types.class, SchemaConstants.Q_ELEM_XSD_1999,
new SchemaSerializer());
mapExtensionTypes(Types.class, SchemaConstants.Q_ELEM_XSD_2000,
SchemaImpl.class);
registerDeserializer(Types.class, SchemaConstants.Q_ELEM_XSD_2000,
new SchemaDeserializer());
registerSerializer(Types.class, SchemaConstants.Q_ELEM_XSD_2000,
new SchemaSerializer());
mapExtensionTypes(Types.class, SchemaConstants.Q_ELEM_XSD_2001,
SchemaImpl.class);
registerDeserializer(Types.class, SchemaConstants.Q_ELEM_XSD_2001,
new SchemaDeserializer());
registerSerializer(Types.class, SchemaConstants.Q_ELEM_XSD_2001,
new SchemaSerializer());

I haven't used Java for webservices, but have you tried setting an absolute path to the schemas you import? Perhaps it's trying to load a local file.
You could also try sniffing the wire to see if you're making a request, perhaps it's malformed.
$0.02