• • Constructor is a special method.
• • Constructor name and the class name must be same.
• • Constructor never returns any value.
• • Constructor is specifically used to initialize data or objects.
• • Constructor executes automatically when an object is created, which is the main advantage.
• • If a program having no constructor, then at the time of compilation, the compiler provides a default constructor.

Example:

class A {
	int x;
	at the compile time =>  class A {
			inr x;
			-- --A() {}
		}
		-- -- --
}

There are 2 types of constructors, like 0-arg constructor and n-arg constructor(parameterized constructor).