Encapsulation in java with realtime example

Encapsulation in java with realtime example
Encapsulation is defined as the wrapping up of data under a single unit. It is the mechanism that binds together code and the data it manipulates.Other way to think about encapsulation is, it is a protective shield that prevents the data from being accessed by the code outside this shield.

Technically in encapsulation, the variables or data of a class is hidden from any other class and can be accessed only through any member function of own class in which they are declared.
As in encapsulation, the data in a class is hidden from other classes, so it is also known as data-hiding.
Encapsulation can be achieved by: Declaring all the variables in the class as private and writing public methods in the class to set and get the values of variables
public class Encapsulate
{
// private variables declared
// these can only be accessed by
// public methods of class
private String geekName;
private int geekRoll;
private int geekAge;

// get method for age to access
// private variable geekAge
public int getAge()
{
return geekAge;
}

// get method for name to access
// private variable geekName
public String getName()
{
return geekName;
}

// get method for roll to access
// private variable geekRoll
public int getRoll()
{
return geekRoll;
}

// set method for age to access
// private variable geekage
public void setAge( int newAge)
{
geekAge = newAge;
}

// set method for name to access
// private variable geekName
public void setName(String newName)
{
geekName = newName;
}

// set method for roll to access
// private variable geekRoll
public void setRoll( int newRoll)
{
geekRoll = newRoll;
}
}
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