How a private constructor works??

Question

How a private constructor works??

Answer 1

one of the more common usage of private constructor is for the sake of creating a single instance of a class with a singleton design pattern

https://www.google.co.il/amp/www.journaldev.com/1377/java-singleton-design-pattern-best-practices-examples/amp

the static method is called from outside the class, the constructor is called ONCE only from within the class