Stack Overflow
Stack Overflow

Questions tagged [data-hiding]

60 questions
61
votes
20 answers

Encapsulation vs Data Hiding - Java

Interviewer: What is encapsulation and how do you achieve it in Java? Me: Encapsulation is a mechanism to hide information from the client. The information may be data or implementation or algorithm. We achieve this using access modifiers.…
Sandeep Jindal
  • 14,510
  • 18
  • 83
  • 121
13
votes
4 answers

Are static variables inherited

I have read at 1000's of locations that Static variables are not inherited. But then how this code works fine? Parent.java public class Parent { static String str = "Parent"; } Child.java public class Child extends Parent { …
Aman
  • 979
  • 3
  • 10
  • 23
4
votes
2 answers

Practical example Encapsulation vs Information Hiding vs Abstraction vs Data Hiding in Java

I know there are lots of post regarding this question which has theoretical explanation with real time examples.These OOPs terms are very simple but more confusing for beginners like me. But I am expecting here not a definition and real time…
Prashant Shilimkar
  • 8,402
  • 13
  • 54
  • 89
3
votes
2 answers

A precise explanation of encapsulation, data abstraction and data hiding

The object oriented concepts : encapsulation, data abstraction and data hiding are 3 different concepts, but very much related to each other. So i am having difficulty in understanding the concepts fully by reading the information from internet. The…
nitin_cherian
  • 6,405
  • 21
  • 76
  • 127
3
votes
4 answers

In OOP is class encapsulation the right way to do data hiding?

I have a question about the OOP principle of data hiding. As far as I understand, data hiding = restrict internal fields of a structure to a certain area of visibility. Motivation: if one changes structure contents, only implementations in the area…
jam
  • 803
  • 5
  • 14
3
votes
5 answers

Abstraction and Data Hiding in java

I'm trying to understand the concept of abstraction in java. When I came through some tutorials they said that Abstraction is a process where you show only “relevant” data and “hide” unnecessary details of an object from the user. This is a…
Dil.
  • 1,996
  • 7
  • 41
  • 68
3
votes
3 answers

Public sizeof for privately defined struct

I have a little data-hiding module that looks like this: /** mydata.h */ struct _mystruct_t; typedef struct _mystruct_t mystruct; mystruct *newMystruct(); void freeMystruct( mystruct** p ); /** mydata.c */ #include "mydata.h" struct _mystruct_t { …
Luis
  • 1,210
  • 2
  • 11
  • 24
2
votes
4 answers

Hiding C struct definition

Here is my setup: In public.h: #ifndef PUBLIC_H_ #define PUBLIC_H_ #include "func.h" /*extern typedef struct _my_private_struct PRIVATE_;*/ typedef struct _my_private_struct PRIVATE_; /* Thanks to larsmans and Simon Richter */ #endif In…
markfw
  • 683
  • 2
  • 9
  • 22
2
votes
9 answers

JAVA - Abstraction

I am little confused about abstraction in java. I have checked many pages stating that abstraction is data hiding(Hiding the implementation). What I understand about abstraction is it is 'partial implementation'. Just define what you are going to…
Half Blood Prince
  • 951
  • 2
  • 13
  • 25
2
votes
1 answer

[Steganography ]Hiding Data in PDF files

I'm trying to hide a file in a PDF file code. I've already search some information to help me. I've tried to uncompress the pdf using pdftk ( pdftk pdf.pdf output uncompress.pdf uncompress ). Then I tried different things such as : Insert…
Prygan
  • 95
  • 1
  • 9
2
votes
0 answers

A JavaScript Concatenator library to achieve data hiding under modularization

JavaScript Concatenator I'm considering writing a JavaScript library to achieve Data Hiding under Modularization. I hope to get some inputs on whether this will be useful and what are the potential problems. Let's me explain the problem first. What…
Boyang
  • 2,520
  • 5
  • 31
  • 49
2
votes
5 answers

Inlined Setter and Getter functions in C

In C++ I can have a getter function declared inline in a header file: class Cpp_Example { public: unsigned int get_value(void) { return value;} private: unsigned int value; }; By including this header file, client methods and…
Thomas Matthews
  • 56,849
  • 17
  • 98
  • 154
2
votes
1 answer

separable image encryption and data hiding

I am developing a project " separable reversible data hiding in encrypted image" based on an ieee paper in java. I understood how to encrypt the image but cant really understand how the data is embedded in the image by modifying the LSB. Can someone…
Amar C
  • 374
  • 5
  • 17
1
vote
2 answers

Parent - Child Relation in C++

Consider the below C++ code class B; class A{ private: B* mB; }; class B{ private: doSomethingImportant(); }; We have a Object A that contains (has a) Object B. The parent being A and child being B. Now if I want A to make B do…
bsoundra
  • 930
  • 2
  • 13
  • 27
1
vote
4 answers

Hiding mutators, clarification needed

Suppose you have a class Dog, that has public class Dog { private String name; private double age; // some setters // some getters Additionally, you have a class DogHandler, that makes an instance of the Dog d and passes it to…
James Raitsev
  • 92,517
  • 154
  • 335
  • 470
1
2 3 4