Explain method chaining + inheritance

[sage ridge]

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[sage ridge]

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[drowsy spoke]

<T extends X<T>> expects a type T that extends at some point X

You have the Pet class declared this way :

public class Pet<T extends Pet<T>>

The generic can only be a type that extends Pet, that Dog for example

public class Dog extends Pet<Dog>

However, this is not possible :

public class Dog extends Pet<String>

Because String does not extend Pet

It doesn't necessarily need to be done this way :

public class X extends T<X>

It could be

public class X extends T<Y>

and work as long as Y extends T

[sage ridge]

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