What are the limitations of generics in Java?

What are the limitations of generics in Java?

Generics in Java provide type safety but have limitations like type erasure, no primitive types, and restrictions on instantiation.

Can you explain type erasure?

Type erasure is the process by which the compiler removes all generic type information during compilation, leading to runtime type information loss.

What happens if I try to instantiate a generic type?

You cannot instantiate a generic type directly. For example, you can't do new T() where T is a type parameter.

Are there any workarounds for these limitations?

Yes, you can use bounded type parameters or create factory methods to work around some limitations of generics.

What about using wildcards in generics?

Wildcards allow for flexibility in generics, but they also come with their own set of limitations, such as restrictions on adding elements.