This document discusses working with arrays of objects in Java. The key points covered are:
- Everything from an ArrayList<Object> comes out as an Object reference type regardless of the actual object type.
- The compiler decides available methods based on the reference type, not the actual object type.
- A single object can contain parts from multiple classes due to inheritance and polymorphism.
- Casting is needed to access methods from the actual object type when using a reference of a supertype.
- The instanceof operator can check the actual object type at runtime to avoid exceptions from incorrect casts.
- Interfaces allow classes from different inheritance trees to share a common role/behavior.
Java OOP Programming language (Part 6) - Abstract Class & InterfaceOUM SAOKOSAL
Java OOP Programming language (Part 6) - Abstract Class & Interface
Oum Saokosal
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Java OOP Programming language (Part 6) - Abstract Class & InterfaceOUM SAOKOSAL
Java OOP Programming language (Part 6) - Abstract Class & Interface
Oum Saokosal
Where to me find me more:
YouTube: https://www.youtube.com/user/oumsaokosal
FB Page: https://facebook.com/kosalgeek
PPT: https://www.slideshare.net/oumsaokosal
Twitter: https://twitter.com/okosal
Web: http://kosalgeek.com
OCA Java SE 8 Exam Chapter 5 Class Designİbrahim Kürce
Inheritance is the process by which the new child subclass automatically includes any public or protected primitives, objects, or methods defined in the parent class.
We refer to any class that inherits from another class as a child class, or a descendent of that class.
We refer to the class that the child inherits from as the parent class, or an ancestor of the class.
Polymorphism is the concept that different objects have different implementations of the same characteristic and Interfaces provide early binding to an object, which can greatly improve performance and also provide type protection at compile time
Interface in java By Dheeraj Kumar Singhdheeraj_cse
In Java,
An interface is a way through which unrelated objects use to interact with one another.
Using interface, you can specify what a class must do, but not how it does it.
It is not a class but a set of requirements for classes that implement the interface.
OCA Java SE 8 Exam Chapter 5 Class Designİbrahim Kürce
Inheritance is the process by which the new child subclass automatically includes any public or protected primitives, objects, or methods defined in the parent class.
We refer to any class that inherits from another class as a child class, or a descendent of that class.
We refer to the class that the child inherits from as the parent class, or an ancestor of the class.
Polymorphism is the concept that different objects have different implementations of the same characteristic and Interfaces provide early binding to an object, which can greatly improve performance and also provide type protection at compile time
Interface in java By Dheeraj Kumar Singhdheeraj_cse
In Java,
An interface is a way through which unrelated objects use to interact with one another.
Using interface, you can specify what a class must do, but not how it does it.
It is not a class but a set of requirements for classes that implement the interface.
A presentation on Design Patterns. This was created for the workshop at NED University of Engineering and Technology Karachi, Pakistan CIS Department held on April 7, 2012.
Had a wonderful experience
Framhald af umfjöllun um hlutbundna forritun og hönnun. Nú förum við yfir Generic Programming sem sem leið til að búa til sveigjanlega og endurnýtanlegar einingar. Skoðum líka reflection. Þá verður farið fyrir hvernig má hann laustengdar einingar og notum við frægan andarleik sem dæmi.
Þá mun Code Horror Dude kíkja í heimsókn