how to main a high cohension

[Shanky Sohar]

I was studing the cohension...but not able to understand how to maintain it......
as there are ways for strong encapsulation like we have to make the variable as private etc..

Is there something like this by which we can have a higher cohension.........


Thanks in advance

[Deepak Bala]

Cohesion has to do with the responsibilities of a given class.

Encapsulation has to do with data hiding and making sure references do not leak from your class. Immutability is a related topic of interest

[Minhaj Mehmood]

 

phil sohar wrote:I was studing the cohension...but not able to understand how to maintain it......
as there are ways for strong encapsulation like we have to make the variable as private etc..

Is there something like this by which we can have a higher cohesion.........


Thanks in advance

Take a look on following pseudo code example:

class MyClass{
doPritingStuff();
doSendEmails();
...
}

In the above design cohesion is low the class is responsible to handle printing stuff sending emails and blah blah...such design is typically much difficult to maintain. High cohesion is all about how a single class is designed; the more focused a class the higher its cohesion.

Following listed code is high cohesion version of above example.

class PrintingStuff{
//methods concern only printing stuff
}
class EmailingStuff{
//methods to send emails...
}

The key benefits of High cohesion is the code is easily reusable and easier to maintain for future changes.


hope this helps

Minhaj.