How to Troubleshoot and Resolve IllegalAccessError in Java

What is an IllegalAccessError in Java?

An IllegalAccessError in Java is an error that occurs when an application attempts to access a type (class, interface, field or constructor) that it does not have access to. This can happen when a class has a restricted access modifier, such as private or protected, and the application tries to access it directly. It can also happen if a class is in a package that cannot be accessed by the application. This type of error is usually caught at compile-time, but can sometimes occur at runtime.

How to Solve IllegalAccessError in Java?

The most common solution for solving an IllegalAccessError is to change the access level of the type you are trying to access. If the type has a restricted access modifier, such as private or protected, you can make it public and try again. If the type is in a package that is not accessible to your application, you can add the package to the appropriate classpaths.

Conclusion

IllegalAccessError is an error that occurs when an application attempts to access a type that it does not have access to. The most common solution is to change the access level of the type or add the package to the proper classpaths. If these solutions do not work, it is best to check the documentation for the type that is being accessed for further information.