JavaCodes/Marvellous2.java at main · raskarabhi45/JavaCodes · GitHub

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//Interface can be used as

//1 One class can extend another class

class Base
{}

class Derived extends Base

/////////////////////////////
//2 One class can implement one interface
interface Demo
{}

class Hello implements Demo
{}

///////////////////////////
//3 One class can implement more than one interface
interface Hello
{}
interface Demo
{}

class Marvellous implements Hello,Demo
{}

////////////////////////
//4 One interface can extend another interface

interface Demo
{}

interface Hello extends Demo
{}

interface Marvellous implements Hello
{}

////////////////////////////////////
//5 one class can extend one class and implement one interface

class Demo
{}

interface Hello
{}

class Marvellous extends Demo implements Hello