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compiler throwing error when trying to any dependencies in a maven project

Fair amount of experience with java but have only made console applications without using any dependencies. I am currently trying to make a rest api to handle request for my web application. I am using Apache Maven 3.6.3 and have the dependencies in my pom.xml file.
<dependencies>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.13</version>
</dependency>
</dependencies>
When I try to compile my project I get the same error for each of my dependencies (listing the error for the http client)
error: package org.apache.http.client.methods does not exist

I think the problem is connected with some dependencies which use an old version of this library. A possible solution is to add in the pom file the dependency in the dependencyManagement, this is a way to override all the possible imports of the library.
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.13</version>
</dependency>
</dependencies>
</dependencyManagement>

package io.rsocket.core does not exist during maven build

I'm facing some strange problem.
During maven build I'm getting package io.rsocket.core does not exist.
My pom.xml contains following dependencies
<dependency>
<groupId>io.rsocket</groupId>
<artifactId>rsocket-core</artifactId>
<version>1.0.0-RC6</version>
</dependency>
<dependency>
<groupId>io.rsocket</groupId>
<artifactId>rsocket-transport-netty</artifactId>
<version>1.0.0-RC6</version>
</dependency>
Analyzing reactor-core jar file showes that there is no core package in that jar. Did I missed some dependencies?
Thanks

Package is found in the artifact (spring-cloud-function-rsocket) Add this to your pom:
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-function-rsocket</artifactId>
<version>3.1.0-SNAPSHOT</version>
</dependency>

Spring boot 2.0.6 quartz missing org/springframework/scheduling/quartz/SpringBeanJobFactory in war

Using spring boot war build during the start up of the application in the tomcat
Caused by: java.io.FileNotFoundException: class path resource [org/springframework/scheduling/quartz/SpringBeanJobFactory.class] cannot be opened because it does not exist
at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:180)
even though it exists as a dependency
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-quartz</artifactId>
</dependency>
And also spring-context-support
There are no issues with spring boot jar build and run
How to fix the issue for the war deployment?
This is what I get when debugging jar file - maybe this might help: (with war file ClassNotFoundException)

I'm not sure, it's just suggestion:
Try to add dependencies:
<!--Quartz-->
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz</artifactId>
<version>2.2.1</version>
</dependency>
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz-jobs</artifactId>
<version>2.2.1</version>
</dependency>
NOTE: It's just a way to 'hot fix'. And it is not a complete solution.

Figured out the issue. As I was running Tomcat from the IntelliJ Idea and new dependencies introduced to the project were not reflected. Needed to remove and reimport war/war exploded into Tomcat configuration - no issues.

Try to add the following dependency (if you want you can set Spring version by yourself):
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>

Unable to create SOAP connection factory: Provider com.sun.xml.internal.messaging.saaj.client.p2p.HttpSOAPConnectionFactory not found

I am currently developping a Java server app that connect to another server with SOAP, retrieve some data and store it into a DB.
I work on Eclipse Photon, Maven project.
My Soap client worked perfectly fine until now. For my db storage functions, I needed the JDBC SQL Server driver. But Eclipse told me that driver was compiled with a more recent version of Java.
I was on Java 8, I updated to Java 10 and now the driver works fine BUT my SOAP client doesn't work anymore ! Eclipse doesn't recognize the import javax.xml.soap I use for my Soap.
So I put into my pom.xml some dependencies for it like :
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.2.11</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-core</artifactId>
<version>2.2.11</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.2.11</version>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.xml.soap/javax.xml.soap-api -->
<dependency>
<groupId>javax.xml.soap</groupId>
<artifactId>javax.xml.soap-api</artifactId>
<version>1.4.0</version>
</dependency>
The import of javax seemed to be recognized again by Eclipse so I compiled my project with Tomcar to launch it and after trying my Soap client it gives me the following error :
java.lang.Exception: Unable to create SOAP connection factory: Provider com.sun.xml.internal.messaging.saaj.client.p2p.HttpSOAPConnectionFactory not found

Adding this dependency to my POM fixed the issue:
<dependency>
<groupId>com.sun.xml.messaging.saaj</groupId>
<artifactId>saaj-impl</artifactId>
<version>1.4.0</version>
</dependency>
It also fixes this error: javax.xml.soap.SOAPException: Unable to create message factory for SOAP: Unable to create SAAJ meta-factory: Provider com.sun.xml.internal.messaging.saaj.soap.SAAJMetaFactoryImpl not found

I had this same scenario, here's how I fixed it:
I downloaded the saaj-impl jar and the mimepull dependency
https://jar-download.com/artifacts/com.sun.xml.messaging.saaj/saaj-impl/1.3.6/source-code
I imported these two jars into intelliJ as a dependency via File -> Project Structure -> Modules -> Dependencies
Then I added the maven dependencies into pom.xml:
<!-- saaj-impl-1.3.16.jar maven dependency -->
<dependency>
<groupId>com.sun.xml.messaging.saaj</groupId>
<artifactId>saaj-impl</artifactId>
<version>LATEST</version>
<systemPath>${project.basedir}/(from project folder to jar file).../saaj-impl-
1.3.16.jar</systemPath>
<scope>system</scope>
</dependency>
<!-- mimepull-1.7.jar maven dependency -->
<dependency>
<groupId>org.jvnet.mimepull</groupId>
<artifactId>mimepull</artifactId>
<version>LATEST</version>
<systemPath>${project.basedir}/(from project folder to jar file).../mimepull-
1.7.jar</systemPath>
<scope>system</scope>
</dependency>
After closing the project and reopening, I stopped getting the missing soapconnectionfactory class error!

java.lang.NoClassDefFoundError : javax/xml/soap/SOAPException

I have created a Web Service using Spring. It works fine when running it on my embedded tomcat server. However when I package it as a JAR file and run it with java -jar command, I am receiving this exception.
My service sends a simple soap request and the server response is:
"exception": "java.lang.NoClassDefFoundError",
"message": "javax/xml/soap/SOAPException",
That's the response I get in Postman.
Any ideas where I can look for the problem.

Adding the following in pom file solved the issue
<!-- https://mvnrepository.com/artifact/javax.xml.soap/javax.xml.soap-api -->
<dependency>
<groupId>javax.xml.soap</groupId>
<artifactId>javax.xml.soap-api</artifactId>
<version>1.4.0</version>
</dependency>

JavaSE 8 includes package java.xml.soap.
JavaSE 9 moved package javax.xml.soap to the module java.xml.ws.
Modules shared with JEE (like java.xml.ws) are included in JavaSE 9, but are
- deprecated for removal from a future version of JavaSE, and
- not on the default module path.
A quick workaround is to either
- run the jar with JRE 8: $MY_JRE8_HOME/bin/java -jar my.jar, or
- add a module for JRE 9: java --add-modules java.xml.ws -jar my.jar
Longer term, JavaSE projects that use modules like java.xml.ws must explicitly include the module like other libraries.
See https://stackoverflow.com/a/46359097
See JDK 9 Migration Guide: Modules Shared with JEE Not Resolved by Default
(Reproduced NoClassDefError and workarounds with zipped SOAP web service project at https://spring.io/guides/gs/producing-web-service/)

Yes, In Java 11 java.xml.soap was completely removed.
java.lang.NoClassDefFoundError: javax/xml/soap/SOAPException can be removed by adding the
following dependency.
<dependency>
<groupId>jakarta.xml.soap</groupId>
<artifactId>jakarta.xml.soap-api</artifactId>
<version>2.0.0-RC3</version>
</dependency>
But later, you will encounter , javax.xml.soap.SOAPException: Unable to create SAAJ meta-factory: Provider com.sun.xml.internal.messaging.saaj.soap.SAAJMetaFactoryImpl not found.
This can be solved by adding the following dependency.
<dependency>
<groupId>com.sun.xml.messaging.saaj</groupId>
<artifactId>saaj-impl</artifactId>
<version>1.5.1</version>
</dependency>
Hope, it helps!

Add the following dependencies, it should work then
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-core</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.messaging.saaj</groupId>
<artifactId>saaj-impl</artifactId>
<version>1.5.0</version>
</dependency>
<dependency>
<groupId>javax.xml.ws</groupId>
<artifactId>jaxws-api</artifactId>
<version>2.2.6</version>
</dependency>
Refer the following links for a running piece of code (SpringBootSOAPWS + Java10)
Github- SpringBoot Soap Server
Github- SpringBoot Soap Client

I imported this one to sort out the issue: https://mvnrepository.com/artifact/javax.xml.soap/javax.xml.soap-api/1.4.0

Adding this dependency will solve the issue.
<dependency>
<groupId>com.sun.xml.messaging.saaj</groupId>
<artifactId>saaj-impl</artifactId>
<version>1.5.0</version>
</dependency>

The JAX-WS dependency library “jaxws-api.jar” is missing.
Try:
compile group: 'javax.xml.ws', name: 'jaxws-api', version: '2.3.1' - for gradle or:
<dependency>
<groupId>javax.xml.ws</groupId>
<artifactId>jaxws-api</artifactId>
<version>2.3.1</version>
</dependency>

I know this is already closed for all above people but I am still facing this issue even though I have added
jakarta-xml.soap-api and saaj jars in classpath.
Anything that I am missing to make it work.Tried out using javax-.xml-soap-api as well instead of jakarta jar but still same error.Somehow its not able to identify the jar.