I am using ->
String ar[]=new String[n];
Arrays.sort(ar,new Comparator<String>());
I am getting the error as shown below
The method sort(T[], Comparator<? super T>) in the type Arrays is not applicable for the arguments (String[], Comparator<String>)
What should i do??
Comparator is an interface. Hence you need to instatiate it annonymously and provce implementation
Arrays.sort(ar, new Comparator<String>() {
@Override
public int compare(String o1, String o2) {
// TODO Auto-generated method stub
return o1.compareTo(o2);
}
});
Apart from providing your own implementation of Comparator (as seen in @SURESH ATTA answer) you can just simply use fact that String is implementing Comparable interface (Source) and you can use sort method like this:
String[] strings = { " A ", " D ", " E ", " B ", " Z " };
Arrays.sort(strings);
Comparatoris an interface. How exactly are you instanciating it?