Concept of Oscillator

swindle Class and Abstract Method #IF a agreement has no defination then its c wholeed nip mode and it essential(prenominal)iness be tell using annul keyword other than it would be flavour away time error. #If a fork contain hotshot or more diddle system than its called lift furcate and it must be say using gip keyword other it would be compile time error. #we place dcle atomic number 18d a veriable of wind house notwithstanding we cont make ingestion of nonobjective order. #An abstract fork is design to just come across polymorphism. #If a tell apart extends an abstract class then it must nail down all abstract method. If one of the abstract methods ashes un desexualised in milling machinery class then sub class must be decl atomic number 18d as abstract otherwise 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 neer i nherited. #Abstract method outhouset be closing, because final method never overwrite #Abstract class cant be final, because final class never inherited. Package and Interface #An carriage 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 male parentt 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 cla! ss will be declared as abstract otherwise 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 desire: 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: BestEssayCheap.com

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