What is “tightly encapsulation” in Java? - Learn Java

What is “tightly encapsulation” in Java? - Learn Java

Encapsulation In Java With Realtime Example

A class is said to be tightly encapsulated. 
If and only if each and every variable of class declared as private.

And there is  no need to be worry about whether class contains corresponding 
getter and setter methods or not or whether these methods are declare as public 
or not.

Encapsulation In Java With Realtime Example:

Example:1
public class Account
  {
           private double balance;
           public double getBalance()
          {
                return balance;
          }
  }

Which of the following classes are tightly encapsulated

 public class A
 {
    private int x=11;(Valid)
 }
class B extends A
 {
    int y=20;(Invalid)
 }
 class C extends A
{
private int z=40;(Valid)
 }

Note : If the parent class is not tightly  encapsulated then  
child class will  not be tightly encapsulated.

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