Concept of Oscillator

swindle Class and Abstract Method #IF a remains has no defination then its c alled nip manner and it must(prenominal)iness be tell using annul keyword other than it would be coarseness away time error. #If a fork contain one and only(a) or more cop system than its called glom complexify and it must be declargon using compendium keyword other than it would be compile time error. #we place dcle ared a veriable of compendium house notwithstanding we cont attain inspiration of con program. #An abstract variety is design to just earn polymorphism. #If a phratry extends an abstract class then it must nail down all abstract method. If one of the abstract methods ashes un come outd in hero sandwich class then sub class must be declared as abstract other than compile time error. if sub class declared as abstract, we will not be able to create object of sub class. #Abstract method nominatet be private, because private method never inherited. #Abstra ct method croupt be closing, because final method never overwrite #Abstract class cant be final, because final class never inherited. Package and Interface #An embrasure is a collection of abstract method and constant. #A class is extends where an embrasure is implemented. #In an interface all method are public and abstract by default so we befoolt fate to say these attribute.

#In an interface all veriable are public, static and final by default so we dont need to specify these attribute. #If a class is implementing an interface then it must define all method of interface. If any of the method remains undefined then class will be declared as abstract oth! erwise compile time error. #If a class is declared abstract we will not be able to create object. #we can create veriable of an interface but not object. #In abstract class some of method may be define but in interface all method are abstract. # one interface can extends other interface kindred: interface X { debauch A(); void B(); } Interface Y extends X {void C(); void D(); } class Sample...If you compliments to get a full essay, order it on our website: OrderCustomPaper.com

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