Swap letters problem

 String[]  word = new String[normalWord.length()];
		String answer = "";

	      for (int i = 0; i < normalWord.length(); i++) {
			if (i != normalWord.length() - 1)
			    word[i] = normalWord.substring(i, i+1);
			else
				word[i] = normalWord.substring(i);
		}

		for (int j = 0; j < word.length; j += 2) {
			if (j != word.length - 1 ) {
			  if (word[j].compareToIgnoreCase("A") == 0 && word[j + 1].compareToIgnoreCase("A") != 0) {
				String temp = word[j];
				word[j] = word[j+1];
				word[j + 1] = temp;
			  }
			}
			else
				word[j] = word[j];
		}

		for (int z = 0; z < word.length; z++) {
			answer += word[z];
		}


	System.out.println(answer);