The difference between an interface and an abstract class

Interface	ABSTARCT class
1, a class in Java can implement multiple interfaces 2, "lika A relationship, There is no relationship; method is public static abstract ,     cannot have the that is, the method body, can only be declared; 4, interface is abstract for behavior; public static final ;	1, a class in Java can only inherit an abstract class ; 2, is said to bea"is a" relationship, is not the relationship; 3, the method in the abstract class can have implementation and declaration ; 4, abstract class is the abstraction of things , that is, the abstraction of the class; 5, the variables in the abstract class can be a variety of types ;
1, can not be instantiated ; 2, Java in two forms to embody the abstract of OOP : interface and abstract class;

The difference between an interface and an abstract class