For some reason my LinkedList addObj() method is adding the first object in the list twice -

for reason linkedlist addobj() method adding first object in list twice

here method

public <t> void addobj(t obj) {         if(head == null)         head = new node(obj, null);      node t = head;     while(t.next != null)         t = t.next;      t.next = new node (obj,null);  } 

the output dispays

obj1
obj1
obj2
obj3
obj4