Question

i have a Collection for lastnames read in from an employee class. Is it possible to Organize the output of the sorted names after the Sort? I need an output that is similar to the line i have commented out, instead of the generic single line output with lastnames seperated by comma “[Name1, Name2, Name3…]” which i get now from the Collection…

 public void alpha1()
    {
     LinkedList<String> alphalist = new LinkedList<String>();
     ListIterator<Employee> iterate = list.listIterator(0);
    // System.out.println("First Name" + "\t" + "Last Name" + "\t" + "Salary");
     while (iterate.hasNext())
      {
           emp = iterate.next();

       alphalist.add(emp.getlastname());
      }
      Collections.sort(alphalist, new Comparator<String>() {
         @Override
         public int compare(String o1, String o2) {
             return Collator.getInstance().compare(o1, o2);
         }
     });
     System.out.println(alphalist);
    }

Answer 1

I think better to create Comparator on Employee object and sort the original collection itself.

Once your collection is sorted, iterate and print your collection using Employee object itself.

e.g.

 public void alpha1()
   {
       Collections.sort(list, new Comparator<Employee>() {
        @Override
        public int compare(Employee o1, Employee o2) {
          return o1.getLastName().compareTo(o2.getLastName());
        }
      });

      ListIterator<Employee> iterate = list.listIterator();
      while (iterate.hasNext())
      {
        emp = iterate.next();
        System.out.println("First Name" + "\t" + "Last Name" + "\t" + "Salary");
      }
    }