when we create singleton design then we create private
constructtor..so how JVM take private constructor to make
object..but it's private..
Answer / pals
-Singleton design implies only 1 instance of a class can exist
-Private constructor implies only that class's member variables can call the constructor(Create an object)
-So a singleton class will have a private constructor only when you want to create ONLY 1 instance of the class without giving any other class the opportunity to create the class's objs using "new"; so you will have to write a static method in which u create an instance of this class and using this static method expose the reference of this object to the calling classes.So this will make sure that every user will use the same instance of the class.
Summary: JVM lets ONLY the private constructor class's members create only 1 obj of this class and lets other uses use this obj only by exposing a public static method.
I hope this is clear :)
| Is This Answer Correct ? | 21 Yes | 0 No |
what is difference between excute query ()and execute update ()?
how many ways we can serialize the java object?
What is a package in java? List down various advantages of packages.
What is a class object?
Explain illegalmonitorstateexception and when it will be thrown?
Is there any difference between nested classes and inner classes?
How does queue work in java?
What is an eror in java?
When we should use serialization?
What are thread safe functions?
what is the volatile modifier for? : Java thread
Can you pass functions in java?