Web Reference: Mar 26, 2026 · There are four types of constructors in Java. 1. Default Constructor. A default constructor has no parameters. It’s used to assign default values to an object. If no constructor is explicitly defined, Java provides a default constructor. Note that the constructor name must match the class name, and it cannot have a return type (like void). Also note that the constructor is called when the object is created. All classes have constructors by default: if you do not create a class constructor yourself, Java creates one for you. There is no need to call a constructor. It gets called automatically at the time of the creation of an object. At the time of calling the constructor, memory for the object is allocated in the...
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