Friday, 6 November 2015

Difference between Consructors and Methods?

A Constructor is a special method whose task is to initialize the object of its class. It is special because its name is the same as the class name. They do not have return types, not even void and therefore they cannot return values. They cannot be inherited, though a derived class can call the base class constructor. Constructor is invoked whenever an object of its associated class is created.
whereas Methods  refers to group of statement enclosed within curly braces{}.Its name should be other the name of class.

Create an instance of a class
Group Java statements
Cannot be abstract, final, native, static, or synchronized
Can be abstract, final, native, static, or synchronized
Return Type
No return type, not even void
void or a valid return type
Same name as the class (first letter is capitalized by convention) -- usually a noun
Any name except the class. Method names begin with a lowercase letter by convention -- usually the name of an action
Refers to another constructor in the same class. If used, it must be the first line of the constructor
Refers to an instance of the owning class. Cannot be used by static methods.
Calls the constructor of the parent class. If used, must be the first line of the constructor
Calls an overridden method in the parent class
Constructors are not inherited
Methods are inherited

Enjoy Reading.

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