abstract class multiple inheritance java

interfaces, but cannot extend more than one class at a time ¦ Therefore, interfaces are considered as an informal way of realising multiple inheritance in Java

another class to implement those methods ▷ An interface can be implemented by a class or an abstract class ▷ In Java, multiple inheritance is achieved using  

Abstract Classes (extends) Allow “multiple inheritance” by implementing multiple Source: http://docs oracle com/javase/tutorial/java/nutsandbolts/op2 html

In the sense, when a class extends an abstract class, it can't extend any other class In Java, this multiple inheritance problem is solved with a powerful construct called interfaces Java does not support multiple inheritance, but it allows you to extend one class and implement many interfaces

distinction between abstract classes interfaces is Java's answer to multiple inheritance Syntax: public class String extends Object implements Comparable 

A java class can implement any number of interfaces It must provide implementations for all methods it acquires (or else be declared as as abstract class) Main 

Interface (wimpy class) is like an abstract class but: – If Java had only abstract classes, a subclass could only inherit from one superclass – Multiple interfaces 

A Java Interface is a formal way for a class to promise to implement certain methods the method) • All abstract, default, and static methods in an interface are implicitly Java lacks multiple inheritance, but there is an alternative What public 

Abstract Multiple inheritance has long been plagued with the “diamond” in- heritance problem (a) a class can inherit multiple features with the same name, and (b) a class can as traits or Java multiple interface inheritance Previous work 

The java drawing class JComponent is an example of this sort of common C++ multiple inheritance is more capable -- multiple superclasses -- but it introduces