Is Multiple inheritance allowed ? why ? How will you restrict inheritance ? Difference between Delete and Truncate . Static method Overriding & overloading Static Binding vs Dynamic Binding , which is better What are the methods of Object class What is immutable class, how can we create ? Garbage Collector, Should we call it, why ?? Can we override Main method Can throws exception from main Method Can use final in main method declaration How can we explicitly throw exception ? What are Wrapper classes for primitive data types ? Explain Interface and Abstract class using real life example. What is Denormalization in MYSQL What are insertAnomaly ,UpdateAnomaly ? What is ACID in MYSQL ? Can we overload main Method ? What is HASHCode in JAVA ? Explain load balancer, how you will implement for server ? what is preemptive and time slicing in java