(UVA) Decoding the message - Solution

Link to the problem: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=738&page=show_problem&problem=2161


import java.io.*;
import java.util.*;

class Main {
    public void process() throws NumberFormatException, IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
       
        int numTests = Integer.parseInt(br.readLine());
        br.readLine(); // blank space after the number of tests
        for (int test = 0; test < numTests; test++) {
            if (test > 0) {
                bw.write("\n"); // blank line between tests           
            }
            bw.write("Case #"+(test+1)+":\n");
            String line = br.readLine();
            while (!line.equals("")) {
                String[] s = line.split(" ");
                int considering = 1;
                for (int i = 0; i < s.length; i++) {
                    if (s[i].length() < considering) {
                        continue;
                    }
                    bw.write(String.valueOf(s[i].charAt(considering-1)));
                    considering++;
                }
                bw.write("\n");
                line = br.readLine();
            }
        }
                                              
        bw.flush();
        bw.close();
       
        return;
    }
   
    public static void main(String[] args) throws NumberFormatException, IOException {
        Main m = new Main();
        m.process();
       
        System.exit(0);
    }
}