Interested to Buy Any Domain ? << Click Here >> for more details...
what is the use of declaring constructor as private?
- 5 Answers
- 15307 Views
- Cyient, IVY Technologies, Sai Softech, Virtusa, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / ranganathkini
By declaring the class constructor as private, other classes
cannot create instances of the class.
This design is usually used in singleton patterns.
| Is This Answer Correct ? | 22 Yes | 2 No |
Answer / ranganathkini
By making all the constructors of a class private, you can
also prevent other class from extending the class without
marking the class final.
| Is This Answer Correct ? | 9 Yes | 6 No |
Answer / suganya
prevent to access by other class even sub class cant have
permission to create object of that base class.
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / ravikiran
In order to restrict the class to get subclassed
| Is This Answer Correct ? | 6 Yes | 6 No |
Answer / anshul
A private constructor is a special instance constructor. It is commonly used in classes that contain static members only. If a class has one or more private constructors and no public constructors, then other classes (except nested classes) are not allowed to create instances of this class.
| Is This Answer Correct ? | 0 Yes | 1 No |
Which are the two subclasses under exception class?
What happens when a thread cannot acquire a lock on an object in java programming?
What is the default value of byte datatype in java?
Can a static class have a constructor?
transaction attributes ?
How will you initialize an Applet?
public class AboutStrings{ public static void main(String args[]){ String s1="hello"; String s2="hel"; String s3="lo"; String s4=s2+s3; //to know the hash codes of s1,s4. System.out.println(s1.hashCode()); System.out.println(s4.hashCode()); // these two s1 and s4 are having same hashcodes. if(s1==s4){ System.out.println("s1 and s4 are same."); }else System.out.println("s1 and s4 are not same."); } } Somebody told me that, == operator compares references of the objects. In the above example even though s1 and s4 are refering to same object(having same hash codes), it is printing s1 and s4 are not same. Can anybody explain in detail why it is behaving like this? Thanks in Advance RavuriVinod
what is use of threads how many ways to create thread
can any body body expalin best definitions & best real time exaples for opps concepts.
. Define Copy Constructor in Java
How to use string tokenizer class.
What is blank final variable?
Core Java 
