Java abstract classes can have construction methods

Learning Java knows that abstract classes cannot be instantiated, and that it is not possible to construct a method, but it is not.

Its invocation is called by the implementation of the subclass construct, which is useful when initializing.

As an example:

Abstract class T {        public  t () {        System.out.println ("t constructor .....");}    } class extends T {        public  A () {        System.out.println ("a. Constructor .....");    }          Public Static void Main (string[] args) {        new  A ();}    }

Output:

T-constructor ....

A. Constructors .....

Java abstract classes can have construction methods