JAVA Comparator for UTF8 Letters

Question

I checked a few comparator posts, but I was stuck in one place.

The comparator I use:

@Override public int compare(BaseFolder arg0, BaseFolder arg1) { try { Object value1 = arg0.getName(); Object value2 = arg1.getName(); Collator lithuanianCollator = Collator.getInstance(new Locale("lt_LT")); lithuanianCollator.setStrength(Collator.PRIMARY); int value = lithuanianCollator.compare(value1.toString(), value2.toString()); return SortOrder.ASCENDING.equals(sortOrder) ? value : -1 * value; } catch(Exception e) { throw new RuntimeException(); } } 

It really sorts, but it doesn’t work on Lithuanian letters, and I had no idea why.

EDIT: for some reason, sorting depends on the length of the string.

For instance.

EDIT:

 public class BaseFolder { private String id; private String name; private String description; private String lastModifiedBy; private String lastModificationDate; private String createdBy; private String creationDate; private String parentId; public BaseFolder() { } public BaseFolder(CmisObject obj) { this.id = obj.getId(); this.name = obj.getName(); this.description = obj.getDescription(); this.lastModificationDate = DateFormatUtils.format(obj.getLastModificationDate().getTime(), "yyyy-MM-dd"); this.lastModifiedBy = obj.getLastModifiedBy(); this.createdBy = obj.getCreatedBy(); this.creationDate = DateFormatUtils.format(obj.getCreationDate().getTime(), "yyyy-MM-dd"); } public BaseFolder(String id, String name, String description, String parentId) { super(); this.id = id; this.name = name; this.description = description; this.parentId = parentId; } public Map<String, Object> getProperties() { Map<String, Object> properties = new HashMap<String, Object>(); properties.put(PropertyIds.PARENT_ID, "cmis:parentId"); properties.put(PropertyIds.OBJECT_TYPE_ID, "cmis:folder"); properties.put(PropertyIds.NAME, getName()); properties.put(PropertyIds.DESCRIPTION, getDescription()); return properties; } 

Using java 8, Primefaces, JSF

Answer 1

I tried this code to order

 public static void main(String[] args) { String[] words = {"ą", "a", "į", "i", "ąąąąą", "aaaaa"}; Collator en_USCollator = Collator.getInstance(new Locale("en","US")); Collator lt_LTCollator = Collator.getInstance(new Locale("lt","LT")); sortStrings(en_USCollator, words); System.out.println(Arrays.toString(words)); sortStrings(lt_LTCollator, words); System.out.println(Arrays.toString(words)); } public static void sortStrings(Collator collator, String[] words) { String tmp; for (int i = 0; i < words.length; i++) { for (int j = i + 1; j < words.length; j++) { if (collator.compare(words[i], words[j]) > 0) { tmp = words[i]; words[i] = words[j]; words[j] = tmp; } } } } 

This is the conclusion.

 [a, ą, aaaaa, ąąąąą, i, į] [a, ą, aaaaa, ąąąąą, i, į] 

UPDATE

You can use RuleBasedCollator

  String simple = "< a< ą< i< į"; RuleBasedCollator lt_LTCollator = new RuleBasedCollator(simple); 

This is the conclusion.

 [a, aaaaa, ą, ąąąąą, i, į] 

There is more information here http://docs.oracle.com/javase/7/docs/api/java/text/RuleBasedCollator.html