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Junit dependency missing in spring boot project

I am trying to learn spring boot and have a test case that is failing. I have the below pom file in which spring-boot-starter-test dependency is included. As i understand it should pull the necessary libraries from the repository for testing including Mockito, JUnit etc. In my test case file the imports are however not getting resolved even though i see the JUnit jar under maven dependencies. Could you please guide me to fix this so that i can run my test case successfully.
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>sia</groupId>
<artifactId>taco-cloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>taco-cloud</name>
<description>Taco Cloud Example</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Below is my test class
package tacos;
import static org.hamcrest.Matchers.containsString;
import static
org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static
org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
import static
org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
import static
org.springframework.test.web.servlet.result.MockMvcResultMatchers.view;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
#RunWith(SpringRunner.class)
#WebMvcTest(HomeController.class)
public class HomeControllerTest {
#Autowired
private MockMvc mockMvc;
#Test
public void testHomePage() throws Exception {
mockMvc.perform(get("/"))
.andExpect(status().isOk())
.andExpect(view().name("home"))
.andExpect(content().string(containsString("Welcome...")));
}
}
the screenshot shows the imports for Junit are not working.
When i run the test i get the following error.
java.lang.SecurityException: class "org.hamcrest.Matchers"'s signer information does not match signer information of other classes in the same package
at java.base/java.lang.ClassLoader.checkCerts(ClassLoader.java:1156)
at java.base/java.lang.ClassLoader.preDefineClass(ClassLoader.java:900)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1008)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:855)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:753)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:676)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:634)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:182)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519)
at tacos.HomeControllerTest.testHomePage(HomeControllerTest.java:31)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at org.junit.vintage.engine.execution.RunnerExecutor.execute(RunnerExecutor.java:43)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
at org.junit.vintage.engine.VintageTestEngine.executeAllChildren(VintageTestEngine.java:82)
at org.junit.vintage.engine.VintageTestEngine.execute(VintageTestEngine.java:73)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:84)
at org.eclipse.jdt.internal.junit5.runner.JUnit5TestReference.run(JUnit5TestReference.java:98)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:40)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:529)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:756)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:452)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)
There was a JUnit dependency in the build path configuration which i removed as i understood that maven must have pulled the it already under maven dependency because of pom file, so i removed the other JUnit from build path and the one which maven pulled remains but this causes failed imports. Should i explicitly place the JUnit dependency on build path again even though the spring-boot-starter-test dependency includes it? Why are my imports not getting resolved.

java.lang.SecurityException: class "org.hamcrest.Matchers"'s signer information does not match signer information of other classes in the same package is most likely caused by mismatch between Eclipse IDE provided libraries and the libraries defined in your project.
The root cause is probably Bug 405276 - Hamcrest all 1.3 which was fixed some time ago already. Perhaps you are using an old version of Eclipse IDE and the problem will go away if you update?
hamcrest - issue #128 gives few workarounds for the problem:
Comment #5
Posted on Feb 11, 2011 by Happy Giraffe
I believe if you look at the "Order and Export" tab in the java build path property (Configure Build Path), you will find that the JUnit jar is above the hamcrest.jar. You can move hamcrest above the JUnit jar here and the problem will go away.

Recent versions of Spring Boot supports JUnit5 (jupiter) out of the box. So you shouldn't use JUnit4 (vintage), unless you really need it because of legacy code. In that case, you'll need to exclude JUnit5 in favor of including JUnit4.
Please, take a look at the imports and the absence of #RunWith(...) annotation.
package tacos;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.ModelAndView;
import static org.hamcrest.Matchers.containsString;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.view;
#WebMvcTest(HomeController.class)
public class HomeControllerTest {
#Autowired
private MockMvc mockMvc;
#Test
public void testHomePage() throws Exception {
mockMvc.perform(get("/"))
.andExpect(status().isOk())
.andExpect(view().name("home"))
.andExpect(content().string(containsString("Welcome...")));
}
}

org.objenesis.ObjenesisException while running powermockito with JDK 8

I am trying to mimick file reading in my unit test case using powermockito,
below is my code I want test
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.List;
public class FileOperation {
public List<String> readFromFile( String inputFilePath ) throws IOException {
List<String> lines = Files.readAllLines(Paths.get(inputFilePath));
return lines;
}
public void writeIntoFile(String result, String outputFilePath) throws IOException {
Files.write(Paths.get(outputFilePath), result.getBytes());
}
}
below is my testcase file
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import java.io.BufferedReader;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mockito;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
#RunWith(PowerMockRunner.class)
#PrepareForTest(FileOperation.class)
public class FileOpertionTest {
#Before
public void setUp() throws Exception {
}
#Test
public void readFromFileTests() throws IOException {
//BufferedReader br= PowerMockito.mock(BufferedReader.class);
//PowerMockito.mockStatic(Paths.class);
PowerMockito.mockStatic(Files.class);
List<String> lines = new ArrayList<String>() {{
add("data1");
add("data2");
add("data13");
}};
Mockito.when(Files.readAllLines(Paths.get("somePath"))).thenReturn(lines);
FileOperation fileOperation = new FileOperation();
List<String> listOfWords = fileOperation.readFromFile("somePath");
assertEquals(listOfWords.size(), 3);
}
}
below is my maven dependency.
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>clientProject</groupId>
<artifactId>clientProject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>clientProject</name>
<dependencies>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito</artifactId>
<version>1.7.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4</artifactId>
<version>1.7.0</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
but while running I am getting below exception
org.objenesis.ObjenesisException: java.lang.reflect.InvocationTargetException
at org.objenesis.instantiator.sun.SunReflectionFactoryHelper.newConstructorForSerialization(SunReflectionFactoryHelper.java:55)
at org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.<init>(SunReflectionFactoryInstantiator.java:38)
at org.objenesis.strategy.StdInstantiatorStrategy.newInstantiatorOf(StdInstantiatorStrategy.java:58)
at org.objenesis.ObjenesisBase.getInstantiatorOf(ObjenesisBase.java:91)
at org.powermock.reflect.internal.WhiteboxImpl.newInstance(WhiteboxImpl.java:259)
at org.powermock.reflect.Whitebox.newInstance(Whitebox.java:139)
at org.powermock.tests.utils.impl.AbstractTestSuiteChunkerImpl.getPowerMockTestListenersLoadedByASpecificClassLoader(AbstractTestSuiteChunkerImpl.java:95)
at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.createDelegatorFromClassloader(JUnit4TestSuiteChunkerImpl.java:174)
at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.createDelegatorFromClassloader(JUnit4TestSuiteChunkerImpl.java:48)
at org.powermock.tests.utils.impl.AbstractTestSuiteChunkerImpl.createTestDelegators(AbstractTestSuiteChunkerImpl.java:108)
at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.<init>(JUnit4TestSuiteChunkerImpl.java:71)
at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.<init>(AbstractCommonPowerMockRunner.java:36)
at org.powermock.modules.junit4.PowerMockRunner.<init>(PowerMockRunner.java:34)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)
at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:70)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:37)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:70)
at org.junit.internal.requests.ClassRequest.createRunner(ClassRequest.java:28)
at org.junit.internal.requests.MemoizingRequest.getRunner(MemoizingRequest.java:19)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createUnfilteredTest(JUnit4TestLoader.java:90)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:76)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:49)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:526)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:770)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:464)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.objenesis.instantiator.sun.SunReflectionFactoryHelper.newConstructorForSerialization(SunReflectionFactoryHelper.java:45)
... 31 more
Caused by: java.lang.IllegalAccessError: class jdk.internal.reflect.ConstructorAccessorImpl loaded by org.powermock.core.classloader.MockClassLoader #68c4039c cannot access jdk/internal/reflect superclass jdk.internal.reflect.MagicAccessorImpl
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)
at org.powermock.core.classloader.MockClassLoader.loadUnmockedClass(MockClassLoader.java:262)
at org.powermock.core.classloader.MockClassLoader.loadModifiedClass(MockClassLoader.java:206)
at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass1(DeferSupportingClassLoader.java:89)
at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass(DeferSupportingClassLoader.java:79)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)
at org.powermock.core.classloader.MockClassLoader.loadUnmockedClass(MockClassLoader.java:262)
at org.powermock.core.classloader.MockClassLoader.loadModifiedClass(MockClassLoader.java:206)
at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass1(DeferSupportingClassLoader.java:89)
at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass(DeferSupportingClassLoader.java:79)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.System$2.defineClass(System.java:2196)
at java.base/jdk.internal.reflect.ClassDefiner.defineClass(ClassDefiner.java:65)
at java.base/jdk.internal.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:400)
at java.base/jdk.internal.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:394)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:312)
at java.base/jdk.internal.reflect.MethodAccessorGenerator.generate(MethodAccessorGenerator.java:393)
at java.base/jdk.internal.reflect.MethodAccessorGenerator.generateSerializationConstructor(MethodAccessorGenerator.java:112)
at java.base/jdk.internal.reflect.ReflectionFactory.generateConstructor(ReflectionFactory.java:462)
at java.base/jdk.internal.reflect.ReflectionFactory.newConstructorForSerialization(ReflectionFactory.java:375)
at jdk.unsupported/sun.reflect.ReflectionFactory.newConstructorForSerialization(ReflectionFactory.java:98)
... 36 more
I am using jdk 14 with compilation level of 1.8 I saw some post saying powermock has issue with higher jdks but I am not sure what dependencies I have to use to make it work?
Update 1:
from this answer I update my maven dependency to below
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>2.18.0</version> <!-- or higher, correspondning to powermock-version -->
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito2</artifactId>
<version>2.0.0-beta.5</version> <!-- or higher -->
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4</artifactId>
<version>2.0.0-beta.5</version> <!-- or higher -->
</dependency>
but now I am getting below exception.
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.powermock.reflect.internal.WhiteboxImpl (file:/C:/Users/vihan/.m2/repository/org/powermock/powermock-reflect/2.0.0-beta.5/powermock-reflect-2.0.0-beta.5.jar) to method java.lang.Object.finalize()
WARNING: Please consider reporting this to the maintainers of org.powermock.reflect.internal.WhiteboxImpl
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
java.lang.RuntimeException: Internal error: Failed to find the "modifiers" field in method setInternalState.
at org.powermock.reflect.internal.WhiteboxImpl.sedModifiersToField(WhiteboxImpl.java:2354)
at org.powermock.reflect.internal.WhiteboxImpl.removeFinalModifierIfPresent(WhiteboxImpl.java:2318)
at org.powermock.reflect.internal.WhiteboxImpl.setField(WhiteboxImpl.java:2304)
at org.powermock.reflect.internal.WhiteboxImpl.setInternalState(WhiteboxImpl.java:304)
at org.powermock.reflect.internal.WhiteboxImpl.setInternalState(WhiteboxImpl.java:317)
at org.powermock.reflect.Whitebox.setInternalState(Whitebox.java:190)
at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:61)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:89)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:542)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:770)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:464)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)
Caused by: java.lang.NoSuchFieldException: modifiers
at java.base/java.lang.Class.getDeclaredField(Class.java:2489)
at org.powermock.reflect.internal.WhiteboxImpl.sedModifiersToField(WhiteboxImpl.java:2348)
... 12 more

JavaFX Maven Exception in Application start method

So I've been stuck with this problem for a few days now. I found and read a lot of posts here on stackoverflow and other sites, but none of the solutions worked for me. I have a problem with my JavaFX in my maven project. I use java 15 and JavaFX 15.0.1.
Here are files that I have in my project:
The pom.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>Maven_javaFx</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>15</maven.compiler.source>
<maven.compiler.target>15</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-controls</artifactId>
<version>15.0.1</version>
</dependency>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-graphics </artifactId>
<version>15.0.1</version>
</dependency>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-fxml</artifactId>
<version>15.0.1</version>
</dependency>
</dependencies>
</project>
Here is my Main.java class:
package main;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class Main extends Application {
#Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("src/main/java/resources/mainH/view.fxml"));
primaryStage.setTitle("Hello World");
primaryStage.setScene(new Scene(root, 300, 275));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
Here is the view.fxml file:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="controllers.controller">
<children>
<Pane layoutX="200.0" layoutY="100.0" prefHeight="200.0" prefWidth="200.0">
<children>
<Button layoutX="74.0" layoutY="100.0" mnemonicParsing="false" text="Button" />
</children>
</Pane>
</children>
</AnchorPane>
Here is the message that pops out when I try to compile my code:
C:\Users\rafal\.jdks\openjdk-15\bin\java.exe --add-modules javafx.base,javafx.graphics --add-reads javafx.base=ALL-UNNAMED --add-reads javafx.graphics=ALL-UNNAMED "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.2.3\lib\idea_rt.jar=64406:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.2.3\bin" -Dfile.encoding=UTF-8 -classpath C:\Users\rafal\Desktop\studia\Różne\Maven_javaFx\target\classes;C:\Users\rafal\.m2\repository\org\openjfx\javafx-controls\15.0.1\javafx-controls-15.0.1.jar;C:\Users\rafal\.m2\repository\org\openjfx\javafx-controls\15.0.1\javafx-controls-15.0.1-win.jar;C:\Users\rafal\.m2\repository\org\openjfx\javafx-graphics\15.0.1\javafx-graphics-15.0.1.jar;C:\Users\rafal\.m2\repository\org\openjfx\javafx-graphics\15.0.1\javafx-graphics-15.0.1-win.jar;C:\Users\rafal\.m2\repository\org\openjfx\javafx-base\15.0.1\javafx-base-15.0.1.jar;C:\Users\rafal\.m2\repository\org\openjfx\javafx-base\15.0.1\javafx-base-15.0.1-win.jar;C:\Users\rafal\.m2\repository\org\openjfx\javafx-fxml\15.0.1\javafx-fxml-15.0.1.jar;C:\Users\rafal\.m2\repository\org\openjfx\javafx-fxml\15.0.1\javafx-fxml-15.0.1-win.jar -p C:\Users\rafal\.m2\repository\org\openjfx\javafx-base\15.0.1\javafx-base-15.0.1-win.jar;C:\Users\rafal\.m2\repository\org\openjfx\javafx-graphics\15.0.1\javafx-graphics-15.0.1-win.jar main.Main
Exception in Application start method
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1071)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.IllegalAccessError: class com.sun.javafx.fxml.FXMLLoaderHelper (in unnamed module #0x5d7c5b47) cannot access class com.sun.javafx.util.Utils (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.util to unnamed module #0x5d7c5b47
at com.sun.javafx.fxml.FXMLLoaderHelper.<clinit>(FXMLLoaderHelper.java:38)
at javafx.fxml.FXMLLoader.<clinit>(FXMLLoader.java:2138)
at main.Main.start(Main.java:13)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
... 1 more
Exception running application main.Main
Most post that I saw with that issue were resolved by changing the directory in getResource() method.I tried that and many other solutions as you can probably see in pom file. I ask you for help in resolving this problem as I have no more ideas on what to do. Any help will be appreciated.
Thank you for helping in advance.

Thanks to a comment from #JoséPereda I found the solution to my problem. The issue was missing JavaFX Maven plugin and missing VM arguments.

EmbeddedMediaPlayerComponent ClassNotFound exception when running a simple vlcj application

I'm creating a simple VLCJ application in Java to play video from a JFrame. When running the application, I keep getting a ClassNotFound exception. Any clues as to what's going on would be greatly appreciated.
App.java:
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import uk.co.caprica.vlcj.component.EmbeddedMediaPlayerComponent;
import uk.co.caprica.vlcj.discovery.NativeDiscovery;
public class App {
private static JFrame mainFrame;
// media player component
private static EmbeddedMediaPlayerComponent mediaPlayerComponent;
public static void main(String[] args) {
new NativeDiscovery().discover();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new App();
}
});
}
public App() {
// initialize a jframe to frame the video we will eventually be displaying
mainFrame = new JFrame("My First Video Player");
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mainFrame.setSize(500, 500);
// initialize the media player component:
mediaPlayerComponent = new EmbeddedMediaPlayerComponent();
// add media player component onto the mainFrame
mainFrame.setContentPane(mediaPlayerComponent);
mainFrame.setVisible(true);
}
}
Pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.vismark</groupId>
<artifactId>MediaTransmitter</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>MediaTransmitter</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<!-- VLCJ dependency for video capability -->
<dependency>
<groupId>uk.co.caprica</groupId>
<artifactId>vlcj</artifactId>
<version>3.10.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.sun.jna/jna -->
<dependency>
<groupId>com.sun.jna</groupId>
<artifactId>jna</artifactId>
<version>3.0.9</version>
</dependency>
<!-- compiler would complain at run-time about not being able to find this -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.12</version>
</dependency>
</dependencies>
Error message:
log4j:WARN No appenders could be found for logger (uk.co.caprica.vlcj.Info).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: com/sun/jna/platform/unix/X11$Atom
at uk.co.caprica.vlcj.player.MediaPlayerFactory.<clinit>(MediaPlayerFactory.java:175)
at uk.co.caprica.vlcj.component.EmbeddedMediaPlayerComponent.onGetMediaPlayerFactory(EmbeddedMediaPlayerComponent.java:349)
at uk.co.caprica.vlcj.component.EmbeddedMediaPlayerComponent.<init>(EmbeddedMediaPlayerComponent.java:217)
at com.vismark.MediaTransmitter.App.<init>(App.java:32)
at com.vismark.MediaTransmitter.App$1.run(App.java:20)
at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:764)
at java.desktop/java.awt.EventQueue.access$500(EventQueue.java:97)
at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:717)
at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:711)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:89)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:734)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:199)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Caused by: java.lang.ClassNotFoundException: com.sun.jna.platform.unix.X11$Atom
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
... 19 more

Check that VLCJ is found correctly.
Put this in main:
boolean found = new NativeDiscovery().discover();
System.out.println(found);
System.out.println(LibVlc.INSTANCE.libvlc_get_version());
Also these lines make me a bit sceptical if it is VLCJ at fault:
Caused by: java.lang.ClassNotFoundException: com.sun.jna.platform.unix.X11$Atom
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
Since it says that it can't find JNA....
If I have understood
http://capricasoftware.co.uk/#/projects/vlcj/tutorial/logging
correctly though only
<dependency>
<groupid>uk.co.caprica</groupid>
<artifactid>vlcj</artifactid>
<version>3.10.1</version>
</dependency>
should be needed...

Lifecycle exception when deploying example spring boot app

I am trying to understand the basic steps of how to deploy a spring boot application. However, despite the fact that I do everything correctly, I can't deploy it on a tomcat server. The tomcat successfuly extracts my war archive but it gives the folloving below error:
11-Dec-2016 16:49:31.975 SEVERE [localhost-startStop-1] org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/springrest]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:952)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1823)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot#5a0050e9]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4842)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4974)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 10 more
Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.JarResourceSet#57a81b37]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:112)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:140)
at org.apache.catalina.webresources.StandardRoot.startInternal(StandardRoot.java:708)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 13 more
Caused by: java.lang.IllegalArgumentException: java.util.zip.ZipException: invalid END header (bad central directory offset)
at org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.initInternal(AbstractSingleArchiveResourceSet.java:113)
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107)
... 16 more
Caused by: java.util.zip.ZipException: invalid END header (bad central directory offset)
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:219)
at java.util.zip.ZipFile.<init>(ZipFile.java:149)
at java.util.jar.JarFile.<init>(JarFile.java:166)
at java.util.jar.JarFile.<init>(JarFile.java:103)
at org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.initInternal(AbstractSingleArchiveResourceSet.java:110)
... 17 more
11-Dec-2016 16:49:31.976 SEVERE [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Error deploying web application archive /home/bora/Desktop/apache-tomcat-8.5.9/webapps/springrest.war
java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/springrest]]
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:756)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:952)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1823)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
I think the error is caused by a ZipException. But I don't understand why. I have followed this and this guides as exactly as it written, but ...
Here is more files, maybe it will be useful:
pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.bora.test</groupId>
<artifactId>springrest</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.2.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<java.version>1.8</java.version>
</properties>
<!-- <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> -->
<repositories>
<repository>
<id>spring-releases</id>
<url>https://repo.spring.io/libs-release</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-releases</id>
<url>https://repo.spring.io/libs-release</url>
</pluginRepository>
</pluginRepositories>
</project>
And my Application class:
package com.bora.rest;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.annotation.RequestMapping;
#Configuration
#ComponentScan
#EnableAutoConfiguration
public class Application extends SpringBootServletInitializer {
private static Class<Application> applicationClass = Application.class;
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
// TODO Auto-generated method stub
return builder.sources(Application.class);
}
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
class GreetingController {
#RequestMapping("/")
String hello() {
return "Hello World";
}
}
I compile and package my maven project by givin mvn clean package and coppy the .war file into my tomcat's webapps folder. Restart the tomcat, it extracts but the above error occurs. I have been searching for solution for about 2 hours, but ...
My tomcat version is 8.5.9. I am using Ubuntu 16.04. Environment variables:
$CATALINA_BASE: /home/bora/Desktop/apache-tomcat-8.5.9
$CATALINA_HOME: /home/bora/Desktop/apache-tomcat-8.5.9
$CATALINA_TMPDIR: /home/bora/Desktop/apache-tomcat-8.5.9/temp
$JRE_HOME: /home/bora/Applications/jdk1.8.0_111
$CLASSPATH: /home/bora/Desktop/apache-tomcat-8.5.9/bin/bootstrap.jar:/home/bora/Desktop/apache-tomcat-8.5.9/bin/tomcat-juli.jar
I have strong knowledge about java language, I develop android applications. However, I am totally stranger to Java EE technologies. If someone finds an answer, could you please tell me the answer like you telling a child?
Thank you very much.

Spring-Boot ist using Tomcat 7 as default. This should be the reason why you get an exception. If u want to use Tomcat 8.5.9 u have to set the Version in your pom.xml:
<properties>
<tomcat.version>8.5.9</tomcat.version>
</properties>
EDIT
Use the spring-boot-maven-plugin for building the app. So you cant be sure your app is builded correctly.
EDIT 2
Just annotate your class with #SpringBootApplication this is enough. your Dont need the other ones.
EDIT 3
After compiling your code with my mentioned changes it worket fine. So the issue must be your config. Clear your local maven-repository and redownload the libaries. That should work.

It seems the version conflict, please check compiled version and JVM of Tomcat version are same.
Pls check JAVA_HOME
Check the Tomcat version to build. Follow the link: https://docs.spring.io/spring-boot/docs/current/reference/html/howto-embedded-servlet-containers.html
Check the Java version to build: http://docs.spring.io/spring-boot/docs/current/reference/html/using-boot-build-systems.html
Hope this help.