Tag: Private constructor Java

1. Static constructor is called before the first instance of class is created, wheras private constructor is called after the first instance of class is created . 2. Static constructor will be executed only once, whereas private constructor is executed everytime, whenever it is called.

Private constructors are used to prevent creating instances of a class when there are no instance fields or methods , such as the Math class, or when a method is called to obtain an instance of a class. If all the methods in the class are static, consider making the complete class static.

Private Constructor is a special instance constructor present in C# language . Basically, private constructors are used in class that contains only static members. The private constructor is always declared by using a private keyword.23 Oca 2019