java - 如何从两个字符串中识别不同的字符

我需要两个单词之间的字符不同

example= (1) Sunday (2) Sundey
different character i need **e**

example= (1) Monday (2) Monbuy
different character i need **bu**

最佳答案

用您提供的输入进行了测试，在这些情况下可以完美地工作

private static String getDifferentChar(String data, String compareWithData) {

    if(data == null || compareWithData == null) return null;
    int dataLength = data.length();
    int compareWithDataLength = compareWithData.length();

    String differentChar = "";
    int pos =0;

    if(pos<dataLength && compareWithDataLength >=dataLength) {
       while(pos<dataLength) {
      if(data.charAt(pos) != compareWithData.charAt(pos)) {
        differentChar+= "" + compareWithData.charAt(pos);
        }
             pos++;
       }

        if(compareWithDataLength > dataLength) {
             differentChar+= "" + compareWithData.substring(dataLength);
        }

    }
    return differentChar;

}