import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class SortString {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.println(“Enter the inputs name and when you want to check then enter ‘check’ : “);
        List<String> input = new ArrayList<String>();
        
        int i =0, j=0;
        while(true){
            String name = in.next();
            if(name.equals(“check”)){
                break;
            }
            input.add(name);
        }
        for(; i<input.size()-1; i++){
            if(input.get(i).compareToIgnoreCase(input.get(i+1))>0){
                System.out.println(“string arrary is not sorted in ascending order.”);
                for(; j<input.size()-1; j++){
                    if(input.get(j).compareToIgnoreCase(input.get(j+1))<0){
                        System.out.println(“string arrary is not sorted in descending order.”);
                        break;
                    }
                }
                if(j==input.size()-1){
                    System.out.println(“String array is sroted in descending order”);
                }
                break;
            }
        }
        if(i==input.size()-1){
            System.out.println(“String array is in ascending order”);
        }
    }
}

Output
Enter the inputs name and when you want to check then enter ‘check’ : 
abc
dfs
def
check
string arrary is not sorted in ascending order.
string arrary is not sorted in descending order.

OutputEnter the inputs name and when you want to check then enter ‘check’ : 
abc
bbc
cbc
check
String array is in ascending order

OutputEnter the inputs name and when you want to check then enter ‘check’ : 
Cbc
bBc
Abc
check
string arrary is not sorted in ascending order.
String array is sroted in descending order

 

Source: http://selenium-makeiteasy.blogspot.com