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JasperReport cannot find symbol JREvaluator in WildFly, works without server

Recently I've been working on report generation with Jasper. I have created a simple program to test it and when running it via IDE it did work fine.
Then I moved the (very short) class to WildFly sever application and despite having the exact same code and library generation fails with cannot find symbol. Those symbols it cannot find are JREvaluator, JRFillVariable as well as packages such as net.sf.jasperreports.engine
In so far I have confirmed that:
Project builds (meaning those classes are visible for javac, but not jvm)
jasperreports-6.13.0.jar is added to war (it's present in /WEB-INF/lib folder alongside other libraries, like gson and hibernate
jasperreports-6.13.0.jar contains the missing classes
It looks to me like the problem doesn't lie in library not being loaded or missing classes (because in testing environment it works), but like something was preventing JBoss class loader from loading those classes
Attempted (and failed) solutions
Clean and Build
Adding -Djava.awt.headless=true to VM options - this did not changed anything
Adding -Djava.awt.headless=false to VM options - also didn't change a thing, but once caused NullPointerException inside jasperreport library. For testing program - worked in both cases
Adding commons-beanutils-1.9.4.jar, commons-digester-2.1.jar, commons-collections4-4.4.jar and commons-loggin-1.2.jar - with no changes
Adding jasper-compiler-jdt-5.5.23.jar - this caused a different error, namely NoSuchMethodError for org.eclipse.jdt.internal.compiler.ICompilerRequestor and few others. This library however should not be necessary as - from what I understand - jasperreport-6.13.0.jar already contains it's compiler and separate library for compiler is not required since a long time.
What has not been attempted:
Forcing the classes to load (http://www.java2s.com/Code/Java/Reflection/Forcethegivenclasstobeloadedfully.htm)
Dynamically loading jar during Runtime or using custom class loader
Update: after looking at this answer and applying the suggestion the missing class was different. Which suggests that the dependencies inside jasperreport.jar are not being loaded properly

I have figured it out
For some reason in server project libraries used by jasperreport.jar were not loaded, but in the testing project they were (might be due to WildFly, might be due to differences between IntelliJ and NetBeans)
Here is the list of libraries, based on pom.xml file in jasperreport.jar that I have added. Some might not be necessary and the list might not be exhaustive (I basically stopped adding libraries once report started generating) but it's good enough base if someone else runs into this problem:
commons-beanutils-1.9.4.jar
itext-2.1.7.jar
poi-ooxml-4.1.1.jar
commons-collections4-4.4.jar
jcommon-1.0.23.jar
xalan-2.7.2.jar
commons-digester-2.1.jar
jfreechart-1.0.19.jar
xmpcore-5.1.3.jar
commons-logging-1.2.jar
poi-4.1.1.jar

Java not processing JUnit jar

I am unable to compile tests with JUnit. When I attempt to do so, I get this error:
package org.junit.jupiter.api does not exist
I get this error compiling the tests even if I put the .jar in the same directory and compile as follows:
javac -cp junit4-4.12.jar Tests.java
The contents of Test.java are:
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.Test;
public class Tests {
... several tests ...
It's not clear to me what the issue is, and as far as I can tell, it should work with the .jar -- it's the one from /usr/share/java, where it was installed when I installed junit.

As #DwB has already mentioned you have wrong junit version.
Here is what is jupiter in JUnit: http://junit.org/junit5/docs/current/user-guide/#overview-what-is-junit-5
In simple words JUnit Jupiter API is a set of new classes which were written and introduced in junit 5 version only. And ur trying to use 4 version.
And also i want to clarify some points.
even if I put the .jar in the same directory and compile as follows
It does not matter actually is your file in the same directory or not. Its all about it's path. If you are setting jar only by name of jar file (as you did) then your path becomes relative to your current directory from where u execute javac command. You can just use absolute path and run this command from every directory you want.
https://docs.oracle.com/javase/8/docs/technotes/tools/windows/classpath.html (this one is for windows but for other os there are only minor changes in path writing)
If you get errors like package does not exist, classnotfound or anything similar then such kinds of errors almost always mean you have something wrong with your classpath or dependencies. In your case you simply had wrong version.
Now about finding necessary deps. In java world one of the main places for dependencies is maven central. Almost every opensource library can be found there and maven by default uses this repository to find and load dependencies (in your case these are jars) from there. Also you can use it to get necessary jars manually by simply using it's UI (https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api/5.0.0). There is download jar button.
Now if you know package or class but do not know in what dependency (jar for simplicity) it is located. In this case you can use http://grepcode.com or other resources which allow to search within available source code withit different repositories. In most cases this work. With juniper i did not manage to find smth there but in other cases this may help) Or the most simple case is just google package and in most cases it also will help to define entry point.
Now about solving ur issue. It seems that you will need as api as implentation. You will definitely need this one https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api/5.0.0 but it seems that you will need juniper-engine too. First try adding only API and then just go on adding necessary libraries according to errors. You can add multiple jars to cp (read provided class path guide from oracle).

How to fix sealing violation from a library? sealing violation: package org.lwjgl.opengl is sealed

While setting up a project as a template for Slick2d based projects following the instructions here:Slick2d wiki using the provided code for testing setup here at run-time I keep getting a giant block of sealing errors. My thought is that this problem stems from the version of ljgwl.jar in both libraries, however Slick requires both in order to function properly. How can I resolve this?

Package sealing is a Java feature implemented in part in the JAR file format. It is discussed in several places, including in Oracle's Java Tutorial, but the bottom line is that when package sealing is enabled in a Jar's manifest, no classes belonging to that package can appear in any other JAR file.
My thought is that this problem stems from the version of ljgwl.jar in both libraries, however Slick requires both in order to function properly.
I'm not sure what you mean by "library", as that is not a Java concept. I suspect, however, that you're trying to say that you somehow have ljgwl.jar files from two separate sources, and you've put both into your project classpath. That would indeed be a problem, and more than just for package sealing. You can, in fact, be thankful for the sealing errors, for they may have saved you from subtler, more difficult to diagnose runtime errors.
How can I resolve this?
You should have only one copy of LWJGL in your classpath, regardless of any requirements enforced by package sealing, and regardless of how the classes are packaged in jar files. It looks like the Slick2D distribution may come with a copy of LWJGL -- in that case, it's probably wisest to use that one. As long as it's in your classpath (as it must be anyway for Slick2D to use it), any class anywhere in your application can use it.
It gets tricky if you need to contend with a inconsistent requirements for LWJGL version, or if you have obtained a JAR that incorporates the LWJGL classes along with something else, but that doesn't change the bottom line: you must choose one version of LWJGL, use that version exclusively within your application, and include only one copy of it in your classpath.

Issue running java program from batch file, runs fine in IDE

I'm doing some basic java homework for a class on my new laptop - issue is, I can't seem to get the program to compile and run from my batch file using the directions the instructor gave me.
I've set the Path variable to my JDK inside the Environment Variables settings.
My program is a simple shipping program to keep track of shipment information - I have the program working flawlessly in NetBeans (which our instructor advised us to use for developing the code), but he's going to be testing them using batch files, so we're also advised to test them on our systems with one we create prior to turning them in - pretty straightforward.
Issue is, I cannot seem to get this to work. I've never done it before, but I've used .bat files to compile and run C++ programs, as well as using makefiles on a unix system, so I feel like I'm absolutely stupid for not figuring this out on my own, but none of my searches have returned any fruitful solutions that help at all.
My program consists of 3 .java files:
Shipment.java - an interface that contains abstracted methods that are implemented in the ShipmentHW1 class
ShipmentHW1.java - a class that implements the abstracted methods from Shipment and has constructors, etc to create a usable object
TestShipment.java - the main class of this program, which utilizes and creates ShipmentHW1 objects based on preset parameters. This is super duper basic stuff here, and again, it runs perfectly fine inside the NetBeans IDE.
The instructions given to us state to have the batch file inside the package directory (which in this case I've set aside a seperate folder on my desktop titled "shipping", which is the package name - shouldn't be any issues there), where the 3 .java files are located as well.
They say if you don't need to explicitly list the path to the JDK, then you can simply have
javac TestShipment.java
java TestShipment.java
pause
Afterwards I get errors talking about how it "cannot find symbol Shipment s = new ShipmentHW1();"
I've tried adding imports, but since they're in the same package it shouldn't even be an issue.
Directory path is
C:\Users\X\Desktop\shipping
All 7 files are contained within:
TestShipment.java
TestShipment.class
Shipment.java
Shipment.class
ShipmentHW1.java
ShipmentHW1.class
doHW1.bat
Does anyone have any idea? I can provide more information if I've been too vague
Also, I'm on Windows 8 if that makes any difference

Solved
Batch file now reads
javac TestShipment.java Shipment.java ShipmentHW1.java
cd ..
java shipment.TestShipment
pause
and it works like a charm. Anyone have any ideas why I had to call the package.class instead of just compiling it regularly?

Try doing
javac TestShipment.java
java TestShipment
pause

Without seeing the contents of TestShipment.java, I'll assume you have some dependency on the Shipment and ShipmentHW1 classes. As such, when you execute a program that uses the TestShipment class, you need to have the .class files for each of the three (and any other dependencies).
So you will have to compile Shipment.java and ShipmentHW1.java as well before running your java command. If they are in the same package, you're good, if not, you will have to specify an appropriate value for the -cp option.
When running java with a class name, you need to specify the fully qualified class name.

If your .java files are declared to be in the 'shipping' package, then you probably need to be running java from the parent directory of 'shipping', e.g.
cd <path>/shipping
javac TestShipment.java
cd ..
java shipping/TestShipment

java.lang.NoClassDefFoundError for nested class at run-time? (Dependency problems?)

Ok, here's the situation:
I have three files:
1. TScan.java
2. Test.java
3. ScanServlet.java
I write my mail class, TScan in the TScan.java file, and inside that class, there is a nested class (not a sub-class), called TEntry. TScan has a main() used for testing and other methods that use the nested TEntry class with no problems.
Also, Test.java is a fancier testing program that uses items from TScan.java, including the TScan and TEntry classes with no problems. TScan.java and Test.java were developed and tested in Eclipse (and it compiles/runs fine from the command line as well).
So TScan is working to a useful point, and I wanted to include it in a webapp. Installed Jetty and wrote ScanServlet.java, which runs in Jetty, no problems.
I started referencing TScan and it started giving the error above for TScan. Changing the ClassPath to include the TScan.class file didn't work, so I made a JAR file and stuck it in the WEB-INF/lib/ folder of the WebApp, and now ScanServlet compiles filen, and seems to find TScan at run-time, however it gives the NoClassDefFounfError TScan$TEntry at run-time. This doesn't make sense to me, since:
1. Obviously it's finding the TScan class now (Since it's not complaining about that at compile or run-time)
2. The error occurs in the TScan.java file (TEntry isn't reference directly except by TScan), which runs fine in stand-alone mode!
3. I made TEntry public, and it still doesn't work.
I have found a lot of questions about NoClassDefFoundError, but none dealing with nested classes, especially with Jetty.
Bear in mind I am more used to Delphi, where if it compiles, it runs. (And ABAP which is more or less the same).
If someone has a solution I will be thrilled, otherwise, I am considering:
Copy-Paste the whole TScan into ScanServlet (Shouldn't have a problem finding it if it's in the same file!) (not very modular)
Move TEntry into a separate class in a separate .java file? (May be a pain to cleanly extract).
Have ScanServlet call TScan.Java as a command line program. (Slow...)

How have you created your jar file and does it contain TScan$TEntry.class in the correct folder?
An inner or nested class still produces a .class file which you need to ship

Looks like you are limping along because your not using any formal build tools that apply rigor and convention to your development. Before messing around what is where and how to manage your handful of classes...start using a real build system that produces a jar file that contains what you need. Maven, Ant, Buildr, whatever...something that applies some convention or configuration. Don't leverage anything any IDE gives you in terms of compiling or exporting something that is supposed to be runnable...you can't trust any of that bunk.
With a proper build mechanism and ideally declarative dependencies and the like you can address your issue in a iterative fashion to resolve the NCDFE. my 2 cents at least
[edit]
On your specific issue, I suspect your running into the webapp classloader configuration. By default classes in /lib are not exposed to webapp contexts. You will need to setParentLoaderPriority on the webapp context to true or bundle your classes as a war file. Also use --dry-run on the cli to help sort out what jar files are being loaded up by jetty.