Trying to resolve ClassNotFound error when running program using OrmLite-CodePudding

I am trying to use OrmLite to connect to a SQLite database (not android). I have read the docs and I believe that my code is correct but I am getting a runtime error when trying to run. I am using Maven to import the dependencies.

Here is my code:

import java.sql.SQLException;

import com.j256.ormlite.dao.Dao;
import com.j256.ormlite.dao.DaoManager;
import com.j256.ormlite.jdbc.JdbcConnectionSource;
import com.j256.ormlite.support.ConnectionSource;


public class AddressBook {

    public static void main(String[] args) throws SQLException {
        
        // Create connection source
        ConnectionSource connectionSource = new JdbcConnectionSource("jdbc:sqlite:database.db");
        
        Dao<Person, Integer> personDao = DaoManager.createDao(connectionSource, Person.class);

        Dao<Business, Integer> businessDao = DaoManager.createDao(connectionSource, Business.class);
        
        Dao<Email, Integer> emailDao = DaoManager.createDao(connectionSource, Email.class);
        
        Dao<Phone, Integer> phoneDao = DaoManager.createDao(connectionSource, Phone.class);
        
        
    }
    
    
}

Here is the dependency section of my maven POM file:

  <dependencies>
        
        <!-- https://mvnrepository.com/artifact/org.xerial/sqlite-jdbc -->
        <dependency>
            <groupId>org.xerial</groupId>
            <artifactId>sqlite-jdbc</artifactId>
            <version>3.36.0.3</version>
        </dependency>
        
        <!-- https://mvnrepository.com/artifact/com.j256.ormlite/ormlite-core -->
        <dependency>
            <groupId>com.j256.ormlite</groupId>
            <artifactId>ormlite-core</artifactId>
            <version>4.48</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.j256.ormlite/ormlite-jdbc -->
        <dependency>
            <groupId>com.j256.ormlite</groupId>
            <artifactId>ormlite-jdbc</artifactId>
            <version>5.6</version>
        </dependency>
    </dependencies>

I am trying to run the program in Eclipse. I checked the Run Configuration and it shows Maven Dependencies in the classpath on the Dependencies tab. Here is the error I am getting when running in Eclipse:

Exception in thread "main" java.lang.NoClassDefFoundError: com/j256/ormlite/field/converter/BooleanNumberFieldConverter
    at com.j256.ormlite.jdbc.db.SqlServerDatabaseType.<clinit>(SqlServerDatabaseType.java:31)
    at com.j256.ormlite.jdbc.db.DatabaseTypeUtils.<clinit>(DatabaseTypeUtils.java:31)
    at com.j256.ormlite.jdbc.BaseJdbcConnectionSource.initialize(BaseJdbcConnectionSource.java:102)
    at com.j256.ormlite.jdbc.JdbcConnectionSource.<init>(JdbcConnectionSource.java:104)
    at com.j256.ormlite.jdbc.JdbcConnectionSource.<init>(JdbcConnectionSource.java:47)
    at dev.website.addressbook.AddressBook.main(AddressBook.java:19)
Caused by: java.lang.ClassNotFoundException: com.j256.ormlite.field.converter.BooleanNumberFieldConverter
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
    ... 6 more

Any ideas?

CodePudding user response：

Exception in thread "main" java.lang.NoClassDefFoundError generally occurs when you have a Class A trying to access a Class B and the Class B is not available in the classpath. Simply say, in Class A you have :

import com.company.ClassB;

class A {

}

and then in the jar of the Class B, Class B is no longer available there.

In your case, it is an incompatibility of the version between ormlite-core and ormlite-jdbc. The Class SqlServerDatabaseType in ormlite-jdbc is looking for the class BooleanNumberFieldConverter in ormlite-core which is no longer available in the version 4.48 of ormlite-core.

To resolve you issue, you have to change the version of ormlite-core to 5.6.

<dependency>
    <groupId>com.j256.ormlite</groupId>
    <artifactId>ormlite-core</artifactId>
    <version>5.6</version>
 </dependency>

 <dependency>
    <groupId>com.j256.ormlite</groupId>
    <artifactId>ormlite-jdbc</artifactId>
    <version>5.6</version>
 </dependency>

CodePudding user response：

I just figured it out.

When I imported ormlite-core and ormlite-jdbc, I imported different versions of them. I changed it in my maven POM to where it is the same version and that corrected the issue!

This is what I changed my maven POM dependencies to:

<dependencies>
        
        <!-- https://mvnrepository.com/artifact/org.xerial/sqlite-jdbc -->
        <dependency>
            <groupId>org.xerial</groupId>
            <artifactId>sqlite-jdbc</artifactId>
            <version>3.36.0.3</version>
        </dependency>
        
        <!-- https://mvnrepository.com/artifact/com.j256.ormlite/ormlite-core -->
        <dependency>
            <groupId>com.j256.ormlite</groupId>
            <artifactId>ormlite-core</artifactId>
            <version>5.6</version>
        </dependency>


        <!-- https://mvnrepository.com/artifact/com.j256.ormlite/ormlite-jdbc -->
        <dependency>
            <groupId>com.j256.ormlite</groupId>
            <artifactId>ormlite-jdbc</artifactId>
            <version>5.6</version>
        </dependency>
    </dependencies>