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Java NoSuchMethodError for regex.Matcher.results() when running .jar file

When I run my app as a .jar file, it returns the below error:
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(JarRsrc
der.java:61)
Caused by: java.lang.NoSuchMethodError: java.util.regex.Matcher.results()Ljav
til/stream/Stream;
at SalesToExcel.start(SalesToExcel.java:108)
at SalesToExcel.main(SalesToExcel.java:45)
... 5 more
However, it works when I run it inside of the Eclipse IDE. Any ideas? I'm not sure if I'm somehow missing a proper jar file even though java.utils.regex should come included in rt.jar. Is there a way to check if this is missing somehow when I package the jar?

So, this is your problem. java.util.regex.Matcher.results is in Java since Java 9 and you are running the .jar with Java 8.
Eclipse runs with Java11.
Install as default JRE at least Java9 in your OS (Windows ?).

JavaFx Location is not set when application is compiled to a jar file

My program runs fine when I run it on eclipse but when I package it in a jar file, I get this error when I run it.
java.lang.IllegalStateException: Location is not set.
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.load(Unknown Source)
at controller.MainController.initAnalyzer(MainController.java:144)
at applicationMain.Main.start(Main.java:32)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(Unknown Source)
at java.lang.Thread.run(Unknown Source)
I am certain that the path is correct. I have tried to change the path but nothing seems to work. I've also checked answers here and from other websites but nothing seems to solve my problem. It just does not make sense that my other FXML files under the same folder loaded well but not these three.

I think of the two following ways:
Make sure you set the path correctly. Anyway you should show us the folder system and how you set the path. Don't forget that the path starts from the current package, not the root of the project.
Clean and Build your project and run it again. It often somehow helps me to solve lots of issues.

Apache POI Java program working fine in IDE (Eclipse) but encounter NoClassDefFoundError when I tried to run it as a runnable jar

I got a very strange problem that my program runs in Eclipse but doesn't run well wen exported as a runnable jar. I am getting ClassNotFoundException.
C:\Users\43156557\workspace\CAF3_IDE\MFTRelease>java -jar MSDocWriter.jar
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(JarRsrcLoa
der.java:58)
Caused by: java.lang.NoClassDefFoundError: org/dom4j/DocumentException
at org.apache.poi.openxml4j.opc.OPCPackage.init(OPCPackage.java:149)
at org.apache.poi.openxml4j.opc.OPCPackage.<init>(OPCPackage.java:136)
at org.apache.poi.openxml4j.opc.Package.<init>(Package.java:54)
at org.apache.poi.openxml4j.opc.ZipPackage.<init>(ZipPackage.java:81)
at org.apache.poi.openxml4j.opc.OPCPackage.open(OPCPackage.java:220)
at org.apache.poi.util.PackageHelper.open(PackageHelper.java:39)
at org.apache.poi.xwpf.usermodel.XWPFDocument.<init>(XWPFDocument.java:1
11)
at com.hsbc.glt.automation.test.mft.util.MSDocumentWriter.initializeDocu
ment(MSDocumentWriter.java:92)
at com.hsbc.glt.automation.test.mft.util.MSDocumentWriter.main(MSDocumen
tWriter.java:70)
... 5 more
Caused by: java.lang.ClassNotFoundException: org.dom4j.DocumentException
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 java.lang.ClassLoader.loadClass(Unknown Source)
... 14 more
C:\Users\43156557\workspace\CAF3_IDE\MFTRelease>

ClassNotFoundException usually depicts that JVM is not able to load the required class file from the defined classpath (either the path is not correct or the class / jar is not present at the path).
The Error in current scenario might be cause have missed to include the Dependency libraries when creating the jar file. Since on eclipse you have the class-path correctly including those its working perfectly.
Make sure that you check "Package Required Jar into generated JAR" , this will include the jar files automatically from your eclipse build path.
for detailed info this might come handy Include Dependent Jars in Executable Jar

Java - Library path error

I'm trying to start my java game but I have some troubles with the java command line:
Here is what I type:
C:\>java -Djava.library.path=%cd%\lib -jar game.jar
And here is what I got:
Exception in thread "main" java.lang.NoClassDefFoundError: org/lwjgl/LWJGLException
at com.game.Main.main(Main.java:7)
Caused by: java.lang.ClassNotFoundException: org.lwjgl.LWJGLException
at java.net.URLClassLoader$1.run(Unknown Source)
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)
... 1 more
I can start my game with Eclipse (With Run as Java Application) but after the menu I got the following error:
Exception in thread "Thread-5" java.lang.UnsatisfiedLinkError: no lwjgl in java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at org.lwjgl.Sys$1.run(Sys.java:72)
at java.security.AccessController.doPrivileged(Native Method)
at org.lwjgl.Sys.doLoadLibrary(Sys.java:65)
at org.lwjgl.Sys.loadLibrary(Sys.java:81)
at org.lwjgl.Sys.<clinit>(Sys.java:98)
at org.lwjgl.opengl.Display.<clinit>(Display.java:129)
at com.game.displaygui.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
lwjgl.jar has been put into the folder \lib.
Could you explain me with I got that?
Thanks.

This because lwjgl library is made by two components:
the .jar file which contains Java code
and the native binary library (which can be .so or .dll or .dylib according to your OS)
The first error you are getting is because you are setting the library path, that should contain the native library, but it does contain the .jar. So you get a java.lang.NoClassDefFoundError because you should set either the library path to the folder that contains native library, either the classpath to contain the real lwjgl.jar file.
The second error that you get with Eclipse is a successive step: your classpath contains the jar library but it is not able to find the native library attached to it, you can fix it in the following way:

You should specify explicitly which lib files to include (seperated by ;) :
-cp %cd%\lib\lwjdl.jar;%cd%\lib\<another-lib>.jar
Don't be tempted to use the wildcard * as it will cause more harm than good (from previous experience :))

You use the java.library.path option to specify the location of native libraries to load. In the location pointed to by that option you would place all dll or .so files required by LWJGL. On the other hand, you need to make sure that all required JAR files are on your classpath, via the -classpath option. Currently, you have your JAR files in the wrong directory.

In Eclipse, if you using maven.
Add the following to the project "Run" : "VM options" .
-Djava.library.path=yourpath/youproject/java/target/natives

Exporting project with libraries to runnable jar from Eclipse

I was trying to export a test of a game I am working on(that uses the Slick library), to send to my partners who lack any IDE, all went well with the export in eclipse, but when I try to run it from command prompt, this is what I get in return.
C:\Users\Noah\Desktop>java -jar test.jar
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(JarRsrcLoa
der.java:58)
Caused by: java.lang.UnsatisfiedLinkError: no lwjgl in java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at org.lwjgl.Sys$1.run(Sys.java:73)
at java.security.AccessController.doPrivileged(Native Method)
at org.lwjgl.Sys.doLoadLibrary(Sys.java:66)
at org.lwjgl.Sys.loadLibrary(Sys.java:95)
at org.lwjgl.Sys.<clinit>(Sys.java:112)
at org.lwjgl.opengl.Display.<clinit>(Display.java:141)
at org.newdawn.slick.AppGameContainer$1.run(AppGameContainer.java:39)
at java.security.AccessController.doPrivileged(Native Method)
at org.newdawn.slick.AppGameContainer.<clinit>(AppGameContainer.java:36)
at org.nor.Main.main(Main.java:16)
... 5 more
C:\Users\Noah\Desktop>
Any idea what is going wrong?
NOTE: The project runs perfectly fine in eclipse.

You should read up on a "get started" guide on slick if you are going to use it. Slick has several dependencies who use dll's to communicate with opengl. You need to specify where those dll's are kept so these dependencies can load the dll's. I found this link that might help you do that..

You also need the native lwjgl library and point to it. The Export Jar functionality do not handle this.
Read up on the lwjgl manual for how to do this.

You have to add your jars either to:
the classpath in your java invocation
the Manifest.mf of your main jar
Java won't automatically load your jars until they are in one of these locations.

Try with File -> Properties -> Java Build Path -> Order and Export