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Error in executing java runnable jar in command prompt. error: reflect.invocationtargetexception

I have created a maven project and writing tests in it using testng. I have also created an executable jar using maven but getting error when executing the jar in command prompt with the arguments that are used in project. I could not actually figure out the error. Please help me with this.
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:61)
Caused by: java.lang.NoClassDefFoundError: org/testng/TestNG
at mypackage.App.main(App.java:40)
... 5 more
Caused by: java.lang.ClassNotFoundException: org.testng.TestNG
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 6 more
command prompt error image in this link
My project Main class codes(App.java)
public class App {
public static String testdataExcel;
public static Properties props = null;
public static Properties loadPropertyFile(String filepath) throws IOException {
FileInputStream stream = new FileInputStream(filepath);
props = new Properties();
props.load(stream);
return props;
}
public static void main(String[] args) throws IOException, InterruptedException {
//Receiving arguments from command prompt
String Filename = args[0];
testdataExcel = args[1];
loadPropertyFile(Filename);
TestNG testng = new TestNG();
testng.setTestClasses(new Class[] { LoginPage.class, testclass2.class,
testclass3.class, testclass4.class,
testclass5.class, testclass6.class });
testng.run();
}
}
I have tried to reinstall java, testng as well and then i ran the project but i am getting same error. i could not figure out actual error so far. so kindly help me to find the error and complete this task.
Thanks in advance :)

Java - Set Very basic system property

I'm using a Spring Boot APP and I'm trying to set a System property programatically. I don't want to set the URL hardcoded, it must be loaded from the classpath
The problem is that my code runs well on IDE but when I try to execute the jar file I get:
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:51)
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:52)
Caused by: java.nio.file.FileSystemNotFoundException
at com.sun.nio.zipfs.ZipFileSystemProvider.getFileSystem(ZipFileSystemProvider.java:171)
at com.sun.nio.zipfs.ZipFileSystemProvider.getPath(ZipFileSystemProvider.java:157)
at java.nio.file.Paths.get(Unknown Source)
My Code:
public static void main(String[] args) {
try {
setSystemProperties();
} catch (IOException e) {
log.error("ERROR: Could not find my.properties file in classpath", e);
}
}
private static void setSystemProperties() throws IOException {
ClassPathResource resource = new ClassPathResource("my.properties");
System.setProperty("my.file", Paths.get(resource.getURI()).toString());
}

InvocationTargetException occurs when there's some underlying exception while calling method. Add the below catch block in your code to see the actual cause.
catch (InvocationTargetException e) {
// the real cause
e.getCause().printStackTrace();
}

Hints on analyzing the stacktrace via the example of NoClassDefFoundError

I have the following code. After compilation I delete the MyClassToLoad.class file and run the code.
public class ClassLoadersTest {
public static void main(String[] args) {
MyClassToLoad c = new MyClassToLoad();
}
}
I get the following stacktrace:
Exception in thread "main" java.lang.NoClassDefFoundError:
classloaders/MyClassToLoad at
classloaders.ClassLoadersTest.main(ClassLoadersTest.java:9) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597) at
com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.lang.ClassNotFoundException:
classloaders.MyClassToLoad at
java.net.URLClassLoader$1.run(URLClassLoader.java:200) at
java.security.AccessController.doPrivileged(Native Method) at
java.net.URLClassLoader.findClass(URLClassLoader.java:188) at
java.lang.ClassLoader.loadClass(ClassLoader.java:303) at
sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at
java.lang.ClassLoader.loadClass(ClassLoader.java:248) at
java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
... 6
more
As far as I understand, this stacktrace means that there was a ClassNotFoundException, that was caught and rethrown as a NoClassDefFoundError.
The questions are:
1) How can I understand at which line the rethrow happened?
2) Who cuts the stacktrace with "... 6 more" - Java or Idea? How can I see it full?
3) As far as I understand to force the rethrown exception contain the full stacktrace we need to rethrow it as
throw new SomeRethrownException("some text", exceptionWhichIsTheReason)
But the NoClassDefFoundError doesn't have such a constructor. So in fact it shouldn't print the full stacktrace.. or may be they just put it as Error message as a String?

classloaders.ClassLoadersTest.main(ClassLoadersTest.java:9) at <-- here
The runtime system. Try
public static void main(String[] args) {
try {
MyClassToLoad c = new MyClassToLoad();
} catch (java.lang.NoClassDefFoundErro e) {
e.getCause().printStackTrace();
}
}
As for 3, see my answer to 2.

Can't use class with external jars in gwt on server side

At the beginning I had an error java.lang.ClassNotFoundException. I solved this problem by adding jars to \war\WEB-INF\lib folder. But then I got java.lang.NoClassDefFoundError: Could not initialize class com.orientechnologies.orient.core.Orient error while applying to database. This is the server code:
public class GreetingServiceImpl extends RemoteServiceServlet implements
GreetingService {
public String greetServer(String input) throws IllegalArgumentException {
RegBugs rb = new RegBugs();
String a = rb.getDbAdres();
try {
//The error is here
ArrayList<String> table = rb.getAllGitRecords();
} catch (ParseException e) {
e.printStackTrace();
}
return a;
}
Compilation is finished successfully. And when I start to call to server I get An error occurred while attempting to contact the server. Please check your network connection and try again. from gwt. How could I solve this problem?
P.S. I use eclipse and gwt-plugin for it
The error occurs when I try to interrupt with orient database.
Trace:
Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.orientechnologies.orient.core.Orient
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.google.appengine.tools.development.agent.runtime.RuntimeHelper.checkRestricted(RuntimeHelper.java:70)
at com.google.appengine.tools.development.agent.runtime.Runtime.checkRestricted(Runtime.java:64)
at com.orientechnologies.orient.core.db.raw.ODatabaseRaw.open(ODatabaseRaw.java:108)
at com.orientechnologies.orient.core.db.ODatabaseWrapperAbstract.open(ODatabaseWrapperAbstract.java:53)
at com.orientechnologies.orient.core.db.record.ODatabaseRecordAbstract.open(ODatabaseRecordAbstract.java:127)
at com.orientechnologies.orient.core.db.ODatabaseWrapperAbstract.open(ODatabaseWrapperAbstract.java:53)
at ru.sersem.testgwt.server.RegBugs.getBugRecordsCount(RegBugs.java:192)
at ru.sersem.testgwt.server.GreetingServiceImpl.greetServer(GreetingServiceImpl.java:22)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:115)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:561)
... 40 more

Statements inside catch block doesn't execute

In the following code, I have used a wrong file name (wrongFileName.fxml) to get loaded, in order to test catch block. However, the statements inside the catch block doesn't execute. Please note, even when there is no statement to print the stack trace on the console, still stack trace gets printed. Please let me know, why this is happening?
public class First extends Application {
#Override
public void start(Stage stage){
Parent root = null;
try {
root = FXMLLoader.load(getClass().getResource("wrongFileName.fxml"));
} catch (IOException ex) {
System.out.println("SomeTextForCheck");
}
}
}
Stack trace:
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.javafx.main.Main.launchApp(Main.java:698)
at com.javafx.main.Main.main(Main.java:871)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:403)
at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:47)
at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:115)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.NullPointerException: Location is required.
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2773)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2757)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2743)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2730)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2719)
at first.First.start(First.java:29)
at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:319)
at com.sun.javafx.application.PlatformImpl$5.run(PlatformImpl.java:216)
at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:179)
at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:176)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:176)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:76)
at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
at com.sun.glass.ui.gtk.GtkApplication$3$1.run(GtkApplication.java:89)
... 1 more

From the stack trace, RuntimeException is thrown. So Kindly handle the RuntimeException and Exception class in your code. Always log the exception or use stacktrace otherwise its difficult to debug.
public class First extends Application {
#Override
public void start(Stage stage){
Parent root = null;
try {
root = FXMLLoader.load(getClass().getResource("wrongFileName.fxml"));
} catch (IOException ex) {
System.out.println("SomeTextForCheck");
ex.printStackTrace()
}
catch(RuntimeException ex) {
System.out.println("SomeTextForCheck");
ex.printStackTrace()
}
catch(Exception ex) {
System.out.println("SomeTextForCheck");
ex.printStackTrace()
}
}

You need to catch the right exception to print the stack trace. Ideally you shouldn't be getting exceptions like NullPointerException, developers need to handle such conditions in the code.