HashTable as array of Linked Lists

Test.java

class Node {
      public int data;
      public Node pointer;
}

class LinkedList {
      Node first;
      int count = 0;

      public void add(int data){
            if(first == null){
                  Node node = new Node();
                  node.data = data;
                  node.pointer = null;
                  first = node;
                  count = 1;
                  return;
            }
            Node next = first;
            while(next.pointer != null){
                  next = (Node)next.pointer;
            }
            Node newNode = new Node();
            newNode.data = data;
            newNode.pointer = null;
            next.pointer = newNode;
            count++;
      }

      public Node getFirst(){
            return first;
      }
      public Node getLast(){
            Node next = first;
            while(next.pointer != null)
                  next = next.pointer;
            return next;
      }


      public int[] get(){
      	if(count != 0){
      		int arr[] = new int [count] ;
            Node next = first;
            int i = 0;
                  arr[0]= next.data;
            while(next.pointer != null){
                  next = next.pointer;
                  i++;
                  arr[i] = next.data;
            }
            i++;
            return arr ;
            }
            return null ;
      }
      public int count(){
            return count;
      }
}


class LongIntParallelHashMultimap {
LinkedList[] l ;
public LongIntParallelHashMultimap() {
int i = 0;
try{
l = new LinkedList[214748364];
for (i=0; i<214748364; ++i){
    l[i] = new LinkedList(); // initialize linked lists
    if(i % 10000000 == 0)
    	System.out.println("OK"); // just to check how often linked lists are created
}
}catch (Exception e) {
        System.err.println(i);
    }
}

public void load(){
}

public void put(int key, int value) {
l[key].add(value);
}

public int[] get(int key) {
int k[] = l[key].get();
return k ;
}

     public void save() {
 }
}


public class Test{
public static void main(String args[]) {
    try {

long startTime = System.nanoTime();
LongIntParallelHashMultimap lph = new LongIntParallelHashMultimap();
long endTime = System.nanoTime() - startTime;
System.out.println(endTime);
startTime = System.nanoTime();
for (int i= 0 ; i < 2500000 ; i++)
lph.put(i, i+100);
endTime = System.nanoTime() - startTime;
System.out.println(endTime);
startTime = System.nanoTime();

startTime = System.nanoTime();
for (int i= 0 ; i < 100 ; i++){
int k[] = lph.get(i);
System.out.print(k[0] + "  ");
}
endTime = System.nanoTime() - startTime;
      System.out.println(endTime);

    } catch (Exception e) {
        System.err.println("Error: " + e.getMessage());
    }
}
}