Create a Comparator for comparing string ignoring case in Java
Description
The following code shows how to create a Comparator for comparing string ignoring case.
Example
/* w w w.ja va2s . co m*/
import java.util.Arrays;
import java.util.Comparator;
public class Main {
public static void main(String[] args) {
String[] sa = new String[] { "a", "c", "d" };
AlphabeticComparator comp = new AlphabeticComparator();
Arrays.sort(sa, comp);
int index = Arrays.binarySearch(sa, sa[10], comp);
System.out.println("Index = " + index);
}
}
class AlphabeticComparator implements Comparator {
public int compare(Object o1, Object o2) {
String s1 = (String) o1;
String s2 = (String) o2;
return s1.toLowerCase().compareTo(s2.toLowerCase());
}
}
The code above generates the following result.