list in java

List is present in java.util .It is an interface.List can implement vector.

virtual function

In Java a function can be made virtual by just attaching the keyword virtual to implement polymorphism.Eg:- class any { int a; float b; virtual void show() { System.out.println("a="+a+"\n b="+b); } } class many extends any { int a1; float b1; void show() { Syatem.out.println("a="+a+"\n b="+b); } public static void main() { any *ptr; many *ptr1; ptr=&ptr1; ptr->show(); ptr->show(); } }

link list creation

A link list is a way to represent data so that each element points to next element. steps to create a link list. 1.create a structure : struct linkl { char name[20]; int number; linkl *next; }; two data members name and number are created and a self referential pointer next is created.