|Abstract class or method
|The abstract modifier can be applied to classes and methods.
|If a class contains one or more abstract methods, the compiler insists that the class must be declared abstract.
|A class that is abstract may not be instantiated
|Abstract classes provide a way to defer implementation to subclasses.
|Subclass of an abstract class must provide an implementation of the abstract method or declare itself to be abstract.
|A class must be declared abstract if it implements an interface but it does not provide implementations for every method.
|Interfaces are always abstract, but the keyword is optional in the declaration.
|Variables can't be declared abstract.
|You can have an abstract class with no abstract methods.
<unk>Abstract darasa au njia <unk>The abstract modifier inaweza kutumika kwa madarasa na mbinu. |Kama darasa ina moja au zaidi mbinu abstract, compiler anasisitiza kwamba darasa lazima kutangazwa abstract. <unk>A darasa kwamba ni abstract inaweza si instantiated <unk>Abstract madarasa kutoa njia ya kuahirisha utekelezaji kwa subclasses. |Subclass ya darasa abstract lazima kutoa utekelezaji wa mbinu abstract au kutangaza mwenyewe kuwa abstract. _A darasa lazima kutangazwa abstract kama ni kutekeleza interface lakini haina kutoa utekelezaji kwa kila mbinu. |Interfaces ni daima abstract, lakini neno muhimu ni hiari katika tangazo. <p>Variable inaweza kuwa abstract. Unaweza kuwa na darasa abstract bila mbinu abstract.