问将字符串中的字符替换为另一个字符串中的另一个字符

EN

sentence.replace(sentence.charAt(i), encode.charAt(indexForEncode));

StringBuilder sb = new StringBuilder();
for (int i = 0; i < sentence.length(); i++){
    int indexForEncode = letters.indexOf(sentence.charAt(i));
    sb.append(indexForEncode != -1
            ? encode.charAt(indexForEncode)
            : sentence.charAt(i)
    );
}
sentence = sb.toString();

String letters = "abcdefghijklmnopqrstuvwxyz";
String encode =  "kngcadsxbvfhjtiumylzqropwe";
// the sentence that I want to encode
String sentence = "hello, nice to meet you!";

char[] chars = sentence.toCharArray();
for (int i = 0; i < chars.length; i++){
    int indexForEncode = letters.indexOf(sentence.charAt(i));
    // if index is < 0, use original character, otherwise, encode.
    chars[i] = indexForEncode < 0 ? chars[i] : encode.charAt(indexForEncode);
}
System.out.println(String.valueOf(chars));

xahhi, tbga zi jaaz wiq!