Sorting of User Defined Vector

Question

In my java program i have created a Vector of user defined type Vector<PolledData> poll=null;. The Vector is of type of instance of class PolledData. I need to sort the Vector poll, I tried Collections.sort(poll);,but it didn't work.

Is there a any way to sort the vector poll?

Note also that you shouldn't be using `Vector`s in new code because the class [is considered obsolete](http://stackoverflow.com/questions/1386275/why-is-java-vector-class-considered-obsolete-or-deprecated). Use some other list implementation (e.g. `ArrayList`) if you can. — Mick Mnemonic, Jul 18 '16 at 10:02
post your user defined class and code if your expecting us to point out correction. — Mrunal Pagnis, Jul 18 '16 at 10:04
@AravindhanK Please post your answer (or mark an answer as solution). — CloudPotato, Jul 18 '16 at 12:21

Aravindhan K · Accepted Answer · 2016-07-18T13:01:57.483

1

The Solution is:

Collections.sort(poll, new Comparator<PolledData>() {
        @Override
        public int compare(final PolledData object1, final PolledData object2) {
            return object1.getName().compareTo(object2.getName());
        }
       } );

Now the elements in my Vector poll is sorted.

edited Jul 18 '16 at 13:01

answered Jul 18 '16 at 12:36

Aravindhan K

31
7

score 0 · Answer 2 · answered Jul 18 '16 at 09:54

0

You need to implement Comparable / Compactor for pojo which are being stored in vector.

answered Jul 18 '16 at 09:54

Dark Knight

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Sorting of User Defined Vector

2 Answers2