Скачать или смотреть Java new Batch - Class 12- Java Buzz words and features - Part 2 Object Oriented and Multithreaded

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Object Oriented
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In Java everything is an Object, and the class is a container that is encapsulating the data and the behaviors together as a single entity and on top of which you can create an object and perform manipulations
Since it is following Object Oriented Paradigm, it is called as OOPL.
Class is a Blueprint on which objects are created. An object is a instance of the class.

6 . Multithreaded
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Java is Multithreaded because it has many APIS that enables a developer to design a program, that could be handled by different threads for parallel execution. This is why it is called as Multithreaded programming

Execution time reduces with Multi threading concepts and because of this the performance is going to be increased .