Encapsulation? Data Hiding? Cohesiveness? Abstraction? what’s the relationship between these?
Information hiding, as defined by Parnas, is the act of hiding design decisions from other modules, so no impact would be felt if you change such decisions. Encapsulation says nothing about such things. It only cares about grouping related things inside a capsule. It says nothing about the transparency level of such a capsule.
Oftentimes I’m asked to interview a candidate to see if he is suitable for a software development position. And 9 of 10 will refer to access modifiers. They will talk about public, private and other keywords, and access levels. Actually, access modifiers are more related to a concept called data hiding.