Generics & Collections

Type parameters, and why a List of Object is not a List of String.

0 of 21 answered

• Not triedChecking membershipFoundation
• Not triedHash map or tree mapFoundation
• Not triedWhat generics preventFoundation
• Not triedWhich list to useFoundation
• Not triedWhy iteration is an interfaceFoundation
• Not triedA collection nobody can changeCore
• Not triedAccepting anything that can be comparedCore
• Not triedChoosing the collection by the operationCore
• Not triedConstraining a type parameterCore
• Not triedDropping the type argumentCore
• Not triedPicking the right queueCore
• Not triedRemoving while iteratingCore
• Not triedWhere the type parameter goesCore
• Not triedA list of dogs is not a list of animalsChallenge
• Not triedKeeping the type at runtimepart of A repository that compiles and still breaksChallenge
• Not triedOverriding one and not the otherChallenge
• Not triedProducer extends, consumer superChallenge
• Not triedWhat survives to runtimeChallenge
• Not triedWhere the exception actually appearspart of A repository that compiles and still breaksChallenge
• Not triedWhere the type wentpart of A repository that compiles and still breaksChallenge
• Not triedWhy List of String is not a List of ObjectChallenge