Interested to Buy Any Domain ? << Click Here >> for more details...
I am newbie in J2EE & looking for strong basic behind each
concept as,
Why do we use private access specifier before each variable
of
type property bcoz ultimately to access it outside the class
we use public method as getter & setter ?
If we use getter & setter to access it outside the class so
better we make variable as public so that it is easily
available outside of the class...
Please guide me why do we use as private ????
- 3 Answers
- 6129 Views
- CTS, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / mmr
procedural oriented:-
int i=0;
int j=0;
int showi(){
print i;
}
void main(){
i++;// using i var with out knowing the intention of its use
could leads to unexpected behaviour
showi();
}
Object oriented:-
class mydata{
private int i=0;
int j=0;
private showi(){
print i;
}
void main(){
i++; // not allowed as i can be accessble only thru the
//member function that means the data will be operated thru
//the method exposed to access it which are private to the
//class
showi();
}
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / arindam ghosh
Hi All,
I think that the access modifiers of Java comes under the
umbrella of encapsulation.If you don't protect your
variable through the access modifiers or if you just make
them final then all the values of those variables can be
changed at any point of time because the variables are used
by many classes as Java is designed to make the code
reusable.You create a variable by using private and
generate the public getter and setter for that
variable.Using this way you can access your variable you
can assign new value in the variable but you can't change
it.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / srinivaskumar.nimmana
Here data is very important, data means variable.. if our class variable are need access by several classes because of that classes code may corrupt our classes code because of our data directly available to that classes, so we need secure to our data that's why we declare as private variables
| Is This Answer Correct ? | 0 Yes | 1 No |
What is enterprise information system resource?
What are the four types of J2EE modules?
What is interpreter in java?
What is difference between java and core?
How do you run a java program?
What do you understand by business logic?
public class ActionSearchBean extends GenericSearchBean<ActionDTO, Long, ActionDTO> { @Override public String search() { data.setRowCount(null); if(data.getRowCount()==0){ data.getNoRecordFound().setRendered(true); data.getDataScroller().setRendered(false); } return "searchAction"; } @Override public String clear() { data.setRowCount(null); if (data.getRowCount() > 0){ data.getNoRecordFound().setRendered(false); data.getDataScroller().setRendered(true); }else{ data.getNoRecordFound().setRendered(true); data.getDataScroller().setRendered(false); } data.setModel(new ActionDTO()); data.setRowCount(null); return "searchAction"; } } what is the purpose of @Override ...what will do @Override here ?
What is the difference between load() and get()?
Describe secure socket layer (ssl)?
Describe the ear, war, and jar.
What is the description for expression element?
What are web technologies in java?
Core Java 
