/* A program demonstrating a simple linked list */

class Element { int data; Element next; }

class List {

  public static void main (String[] args) {


// Create 3 elements

    Element a = new Element();
    Element b = new Element();
    Element c = new Element();

// Set up a linked list

    a.data = 10;
    a.next = b;
    b.data = 20;
    b.next = c;
    c.data = 30;
    c.next = null;

// Print the list

    Element t = a;
    while (t != null) {
       System.out.print (t.data + " ");
       t = t.next;
    }

  }

}