I have a list of unicode strings that I want to sort by first letter. The problem is that I don't know to set up java.text.Collator that it would treat similar letters as different.
This is what I get now:
This is what I want to get (word beginning with Š should always go after S not looking to second letter):
We can create a class extends Collator and override the compare method there.
An example is here.
public class MyCollator extends Collator {
@Override
public int compare(String source, String target) {
return source.compareTo(target);
}
@Override
public CollationKey getCollationKey(String source) {
// TODO Auto-generated method stub
return null;
}
@Override
public int hashCode() {
// TODO Auto-generated method stub
return 0;
}
}
Then we can use this newly added class to sort the String list, and it will display in a correct way.
Collator collator = new MyCollator();
Collections.sort(list, collator);
My Test Result is as follows:
Note, in the result, Š is displaying after T, this is because "Š".compareTo("T")>1 is equal to true.
I believe you can put some logic in compare method to make Š displaying just after S, but before T.
The above code is complied and executed using JDK 1.5 version.
Use Collections.sort(list) directly; You will get the same result as I mentioned above.
So I tested all variants of Collators strength and decomposition and nothing changed. What I found that by my locale ("lt_LT") such sorting that was given was actually grammaticaly correct.