The syntax of a Java constructor is simple. For the most part, it follows the same rules as Java methods with the following exceptions: A Java constructor has the same name as the class. A constructor ...

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 ...

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 ...

The class in this example only defines properties. It contains no explicitly defined Java constructors. When no explicitly defined constructors exist, Java's virtual machine makes object creation ...