Abstract classes and interfaces in Java serve fundamentally different purposes ... with only one abstract method cannot use lambdas. Table 1 summarizes the differences between abstract classes ...

To create abstract classes we use the 'abstract' keyword whereas keyword 'interface' is used to make the interfaces in Java. For inheritance the 'extends' keyword is used by the subclasses whereas ...

1) don't create object for interface & abstract . but we can use ananymous class. 2) interface only declare method. but abstract class both define(nomarl method) and ...

Data members in inteface are always public. Data members in abstract class can be private, protected, etc. Methods in interface are by default abstract and public, java 8 can have body to the methods.