Java Programs - Solved 2017 ICSE Computer Science Paper

import java.io.*;
class Menu{
    public static void main(String args[])throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String a[] = new String[10];
        System.out.println("Enter " + a.length + " names:");
        for(int i = 0; i < a.length; i++){ a[i] = br.readLine().toUpperCase(); a[i] = a[i].trim(); if(a[i].indexOf(' ') > 0)
                a[i] = a[i].substring(0, a[i].indexOf(' '));
        }
        for(int i = 0; i < a.length; i++){
            for(int j = 0; j < a.length - 1 - i; j++){ if(a[j].compareTo(a[j + 1]) > 0){
                    String temp = a[j];
                    a[j] = a[j + 1];
                    a[j + 1] = temp;
                }
            }
        }
        System.out.println("Sorted List of names:");
        for(int i = 0; i < a.length; i++)
            System.out.print(a[i] + "\t");
    }
}