link list in java (delete,insert,display) functions


nodetest Class


public class nodetest {


int data;
nodetest next;
public nodetest(int d)
{

data=d;

}


}
.........................................................................................................................................................
 LinkListTest  Class


import java.util.*;
public class LinkListTest {

public  static LinkListTest  link=new LinkListTest();
public static nodetest first;
public static nodetest last;
public static void insert(int value)
 {


nodetest node1=new nodetest(value);

node1.next=first;
first=node1;






// System.out.println("Values are successsfully insert");
 }

public static  nodetest  delete()
{

nodetest temp=first;
first=first.next;
return temp;


}

 public static void display()
 {

nodetest loop=first;
while(loop!=null)
{
System.out.println(loop.data);
loop=loop.next;

}


 }


 public static void main(String[] args)
 {
LinkListTest link=new LinkListTest();

insert(3);
insert(4);
display();
System.out.println("Insert From firts.........");
display();

delete();
System.out.println("After Delete.......");
display();

 }

}