The default constructor in Java initializes primitive types to their binary equivalent of zero and reference types to null. How to use Java's default constructor. Although the default constructor in ...

If a class does not have an explicitly defined constructor, Java provides a default, zero-argument constructor for you. The drawback to Java's default constructor is that its initializations are ...

Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields ...

You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are initialized via constructors—but there is still more to initialization.

But if you specify a parametrized constructor like Demo(int a) ,and want to use the default constructor Demo(), it is mandatory for you to specify it. In other words, in case your Constructor is ...