Cannot instantiate class: org.apache.naming.java.javaURLContextFactory

Question

I\'m working on Junit test file which loads SQL file and loads it into Oracle:

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;         


        

Answer 1

I was getting this error as the jar that has this class was not added to my classpath. Exception was

Exception in thread "main" javax.naming.NoInitialContextException: Cannot instantiate
class: org.apache.naming.java.javaURLContextFactory [Root exception is java.lang.Class
NotFoundException: org.apache.naming.java.javaURLContextFactory]
        at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:657)
        at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)
        at javax.naming.InitialContext.init(InitialContext.java:223)
        at javax.naming.InitialContext.<init>(InitialContext.java:175)
        at ContextLoaderTest.setDataSourceInformation(ContextLoaderTest.java:51)
        at ContextLoaderTest.main(ContextLoaderTest.java:34)
Caused by: java.lang.ClassNotFoundException: org.apache.naming.java.javaURLContextFact
ory

You need to add the catalina jar file. For that add following in your Maven dependencies -

<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>catalina</artifactId>
    <version>6.0.43</version>
</dependency>

Note artifact name has changed now. Artifact name is tomcat-catalina instead of 'catalina '

<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-catalina</artifactId>
    <version>8.0.15</version>
</dependency>

. So use latest version from

http://mvnrepository.com/artifact/org.apache.tomcat/tomcat-catalina

than

http://mvnrepository.com/artifact/org.apache.tomcat/catalina

Answer 2

I fixed this by adding libraries from Apache Tomcat to the Run-time Test Libraries.

In Netbeans:

Project Properties -> Libraries -> Run Tests

Add JAR/Folder

The two libraries I needed were catalina.jar and tomcat-juli.jar. You mileage may vary.

I found them under the installation directory for Tomcat. e.g:

apache-tomcat-7.0.34/bin/tomcat-juli.jar
apache-tomcat-7.0.34/lib/catalina.jar

Note one of the jars is in the bin directory, the other in the lib directory

This probably isn't the best way to fix your problem. It would be better to have a different way to inject the DataSource.