Program to create a Linked List in Java

class Link {
    public int data1;
    public Link nextLink;

    //Link constructor
    public Link(int d1) {
   data1 = d1;
    }

    //Print Link data
    public void printLink() {
   System.out.print("{" + data1 + "} ");
    }
}

class LinkList {
    private Link first;

    //LinkList constructor
    public LinkList() {
   first = null;
    }

    //Returns true if list is empty
    public boolean isEmpty() {
   return first == null;
    }

    //Inserts a new Link at the first of the list
    public void insert(int d1) {
   Link link = new Link(d1);
   link.nextLink = first;
   first = link;
    }

    //Deletes the link at the first of the list
    public Link delete() {
   Link temp = first;
   first = first.nextLink;
   return temp;
    }

    //Prints list data
    public void printList() {
   Link currentLink = first;
   System.out.print("List: ");
   while(currentLink != null) {
   currentLink.printLink();
   currentLink = currentLink.nextLink;
   }
   System.out.println("");
    }
}  

class LinkListTest {
    public static void main(String[] args) {
   LinkList list = new LinkList();

   list.insert(1);
   list.insert(2);
   list.insert(3);
   list.insert(4);
   list.insert(5);

   list.printList();

   while(!list.isEmpty()) {
   Link deletedLink = list.delete();
   System.out.print("deleted: ");
   deletedLink.printLink();
   System.out.println("");
   }
   list.printList();
    }
}