char_array.java

public class VigenereBootstrap {
  public static char[][] chars = new char[26][26];

  public static void main(String[] args) {
    // bootstrap the chars[]
      for (int i = 0; i < 26; i++) {
        for (int j = 0; j < 26; j++) {
          chars[i][j] = (char) ((i + j) % 26 + 97);
        }
      }
   }
}