Instantiation of bean failed; BeanInstantiationException

[littleone]

I am working on a tutorial and I running a JUnit test on a Java Application that incorporates Spring, JDBC, and Log4j. When I run the JUnit test, I am getting the following error message:

Error creating bean with name 'userDAO' defined in file [C:\SpringsDAO\springJdbcDemoTest\config\appContext.xml]: 
Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: 
Could not instantiate bean class [user.DAO.Impl.UserDAOImpl]: 
Constructor threw exception; nested exception is java.lang.NullPointerException

I have reviewed the code several times and I can not determine why the bean is not be instantiated. I am new to Spring, java beans, Log4j, and JUnit testing so there could be something that I am not understanding. I have verified that the spelling of the bean is correct throughout the application. There are no other noticeable errors.

Please find below the xml file:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
	destroy-method="close">
	<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
	<property name="url" value="jdbc:mysql://127.0.0.1:3307/test"/>
	<property name="username" value="root"/>
	<property name="password" value="sesame"/>
	<property name="maxActive" value="10"/>
	<property name="maxIdle" value="5"/>
	<property name="minIdle" value="1"/>
	<property name="poolPreparedStatements" value="true"/>
	<property name="initialSize" value="1"/>
	</bean>
	
	<bean id= "transactionManager" class= "org.springframework.jdbc.datasource.DataSourceTransactionManager">
	<property name= "dataSource" ref= "dataSource"/>
	</bean>
	
	<bean id= "userDAO" class="user.DAO.Impl.UserDAOImpl">
	<property name= "transactionManager" ref= "transactionManager"/>
	</bean>
	
	
</beans>

I have also attached the xml file and the test class that contains the bean (userDAO).

Thanks for your help in advance.

Best regards,

littleone

[quad64bit]

Sounds like the null pointer is happening in the UserDAOImpl class itself. You do have a UserDAOImpl.java file right? Look in there for your null pointer - perhaps you didn't initialize something?

[littleone]

I looked in the class but I did not see anything. I have attached the UserDAOImpl.java file.