difference between Interface and Abstract class in java

• An abstract class can have instance methods that implement a default behavior.

• An Interface can only declare constants and instance methods, but cannot implement default behavior and all methods are implicitly abstract. 

• An interface has all public members and no implementation. 

• An abstract class is a class which may have the usual flavors of class members (private, protected, etc.), but has some abstract methods.

• You can not create non abstract method in interface