Sofdor Ali Got Mail! - Toph.co - Brute Force

public class solution {
    public static void main(String[] args) {
        String str = "IJ TPGEPS BMJ";
        char[] ch = new char[str.length()];
        for (int i = 0; i < str.length(); i++) {
            if ((int) str.charAt(i) == 32) {
                ch[i] = (char) ((int) str.charAt(i));
            } else if ((int) str.charAt(i) == 65) {
                ch[i] = (char) 90;
            } else {
                ch[i] = (char) ((int) str.charAt(i) - 1);
            }
        }
        str = "";
        for (int i = 0; i < ch.length; i++) {
            str = str + ch[i];
        }
        System.out.print(str);
    }
}