public class Test2
{
  public static  Node test() {
      Node n1 = new Node();
      n1.setWert(3);
      
      Node n2 = new Node();
      n2.setWert(7);
      n1.setNext(n2);
      
      Node n3 = new Node();
      n3.setWert(11);
      n2.setNext(n3);
      
      Node n4 = new Node();
      n4.setWert(12);n3.setNext(n4);
      
      return n1;
  }
    }