what is constructor chaining ?????

calling superclass constructor while creating sub class object is known as constructor chain.br /For example:br /class Person   //super classbr /{br / String name;br / Person(String n)br / {br /   name=n;br / } br /}br /class Teacher extends Person    //subclassbr /{br / String sub;br / Teacher(String n,String s)br / {br /  super(n);br /  sub=s;br / }br /}br /class Testbr /{br / public static void main(String[] args)br /{br / Teacher t=new Teacher("schildt","java");br / System.out.println(t.name);br /System.out.println(t.sub);br /}br /}