Heap pollution is a problem that arises in Java when an array or collection of a specific type is used, but its elements are not of that type, leading to type safety violations. This issue can occur when using generics in Java. Generics were introduced in Java 5 to provide a type-safe way of working with collections and arrays. However, due to the presence of type erasure, the compiler may not be able to catch some type errors, leading to heap pollution.

Heap pollution can result in unexpected behavior, such as ClassCastException or other runtime exceptions, and can also lead to security vulnerabilities. Resolving heap pollution involves ensuring that the type safety of the code is maintained. Here are some ways to do it:

1. Use generic types with specific type parameters to ensure type safety at compile-time.
2. Use the wildcard operator when defining generic types to limit the scope of the generic type.
3. Use casting carefully and ensure that the type being cast is compatible with the target type.
4. Use annotations such as @SuppressWarnings("unchecked") to suppress unchecked warnings.

In conclusion, heap pollution is a problem that can arise when using generics in Java. It can lead to unexpected behavior and security vulnerabilities. To resolve it, developers should ensure that the type safety of the code is maintained by using generic types with specific type parameters, limiting the scope of the generic type, using casting carefully, and using annotations to suppress warnings.