How Abstraction Works. Following is the code example shows the process of using Integer.valueOf() method: For example, a programmer can create several different types of objects. Key Differences between WebSocket and REST. Here, we are specifying the getter & setter function to get & set the value of variable num without accessing it directly. Abstraction as an OOP concept in Java works by letting programmers create useful, reusable tools. Encapsulation binds the data & functions together which keeps both safe from outside interference. Example: Encapsulation. Whereas encapsulation is a method to hide the data in a single entity or unit along with a method to protect information from outside. These can be variables, functions, or data structures. Java Command Line Arguments with examples, passed from the console and used in the java program as an input with examples on inheritance, polymorphism, abstraction, encapsulation, exception handling, multithreading, IO Streams, Networking, String, Regex, Collection, JDBC etc.. Abstraction is the method of hiding the unwanted information. Why is the size of an empty class not zero in C++? While in encapsulation, problems are solved at the implementation level. Encapsulation in C++; Abstraction in C++; Structure vs class in C++; Can a C++ class have an object of self type? Example 2: Convert String to Integer using Integer.valueOf() Integer.valueOf() Method is also used to convert String to Integer in Java. These are ways to define the objects. In abstraction, problems are solved at the design or interface level. Programmers can also create different classes of objects. Data encapsulation led to data hiding. Both are popular choices in the market; let us discuss some of the major difference : WebSocket is a low-level protocol based on the concept of socket and port, which are the underlying transport mechanism, whereas REST is based on CRUD operation. Let’s look at an example of encapsulation.

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