code: package com.fdu.uiautomatortest.utils;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class StringUtil {
  
      public static List<String> segmentation(String identifier){
          List<String> words = new ArrayList<>();
          if(identifier.contains("_")){
              String[] segResults = identifier.split("_");
              for(String seg : segResults){
                  if(seg.length() > 1){
                      words.add(removeNum(seg.toLowerCase()));
                  }
              }
              return words;
          }
          int len = identifier.length();
          List<Character> temp = new ArrayList<>();
          for(int i = 0;i < len; i++){
              char c = identifier.charAt(i);
              if(isCapital(c) && i != 0 && i != len -1){
                  if(isCapital(temp.get(temp.size() - 1).charValue())){
                      temp.add(c);
                  }else{
                      String word = new String(toCharArray(temp));
                      if(word.length() > 1){
                          words.add(removeNum(word.toLowerCase()));
                      }
                      temp.clear();
                      temp.add(c);
                  }
              }else{
                  temp.add(c);
                  if(i == len - 1){
                      String lWord = new String(toCharArray(temp));
                      if(lWord.length() > 1){
                          words.add(removeNum(lWord.toLowerCase()));
                      }
                  }
              }
          }
          return words;
      }
  
      public static boolean isSubmitted(String text){
          if(text == null)
              return false;
          else{
              if(text.startsWith("保存") || text.startsWith("提交"))
                  return true;
              String lower = text.toLowerCase();
              if(lower.startsWith("ok") || lower.startsWith("submit") || lower.startsWith("save") || lower.startsWith("done") ||
              lower.startsWith("add") || lower.startsWith("update") || lower.startsWith("create") || lower.startsWith("register") ||
              lower.startsWith("log in") || lower.startsWith("login"))
                  return true;
          }
          return false;
      }
  
      private static char[] toCharArray(List<Character> charList){
          int size = charList.size();
          char[] charArray = new char[size];
          for(int i = 0;i < size;i++){
              charArray[i] = charList.get(i).charValue();
          }
          return charArray;
      }
  
      private static boolean isCapital(char c){
          return c >= 'A' && c <= 'Z';
      }
  
      private static boolean isNumber(char c){
          return c >= '0' && c <= '9';
      }
  
      private static String removeNum(String word){
          char lastChar = word.charAt(word.length() - 1);
          if(isNumber(lastChar)){
              return word.substring(0, word.length() - 1);
          }
          return word;
      }
  }
  