CastToIncompatibleInterface

Reports type cast expressions where the casted expression has a class/interface type that neither extends/implements the cast class/interface type, nor has subclasses that do.

Such a construct is likely erroneous, and will throw a java.lang.ClassCastException at runtime.

Example:

interface A {}
  interface Z {}
  static class C {}

  void x(C c) {
    if (c instanceof Z) {
      A a = ((A)c); // cast to incompatible interface 'A'
    }
  }