GlobalLogic Interview Question

1. What is an Immutable class? 2. create custom Immutable class? 3. Question on Multithreading 4. Questin on Exception Handling 5. Question how to resolve cyclic dependency in Spring 6. @Qualifier Annotation in Spring 7. What is @Primary in Spring 8. What is @Lazy Annotation in java 9. How to count how many numbers of Object is created for any class in multithreading envornment