Sorting a linked list by string

Question

I am trying to sort a linked list and keep getting "no suitable method found for sort(LinkedList,>). What am I doing wrong?

public Contributor(String firstName, String lastName, String city,
            String country, String phone, double contribution, int id) {
        // CONSTRUCTOR WITH ALL ATTRIBUTES PASSED
        this.firstName = firstName;
        this.lastName = lastName;
        this.country = country;
        this.phone = phone;
        this.contribution = contribution;
        this.id = id;
    }

public static LinkedList<Contributor> contributorList = new LinkedList<>();



Collections.sort(contributorList, new Comparator<String>() {
            @Override
            public int compare(String o1, String o2) {
                return Collator.getInstance().compare(o1, o2);
            }
        });

What type is contributorList?

Florian Schaetz
– Florian Schaetz

2015-07-27 18:21:48 +00:00
Commented Jul 27, 2015 at 18:21 — Florian Schaetz
– Florian Schaetz, Commented Jul 27, 2015 at 18:21
Can we see the declaration of contributorList?

Louis Wasserman
– Louis Wasserman

2015-07-27 18:21:51 +00:00
Commented Jul 27, 2015 at 18:21 — Louis Wasserman
– Louis Wasserman, Commented Jul 27, 2015 at 18:21
Then you should have Comparator<Contributor>.

Bubletan
– Bubletan

2015-07-27 18:23:10 +00:00
Commented Jul 27, 2015 at 18:23 — Bubletan
– Bubletan, Commented Jul 27, 2015 at 18:23
pls post Contributor class. attribute you want to sort

Bruce
– Bruce

2015-07-27 18:23:17 +00:00
Commented Jul 27, 2015 at 18:23 — Bruce
– Bruce, Commented Jul 27, 2015 at 18:23

Bruce · Accepted Answer · 2015-07-27 18:40:03Z

2

Sort using comparator by comparing Contributor objects.

Collections.sort(contributorList, new Comparator<Contributor>() {
    @Override
    public int compare(Contributor o1, Contributor o2) {
       return Collator.getInstance().compare(o1.lastname, o2.lastname);
    }
});

edited Jul 27, 2015 at 18:40

answered Jul 27, 2015 at 18:32

Bruce

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