截取字母部分

/**
 * 截取字母部分
 * @param processRunStatus
 * @return
 */
public static String getStr(String processRunStatus) {
    Pattern p = Pattern.compile("[^a-zA-Z]");
    Matcher m = p.matcher(processRunStatus);
    int i = 0;
    while (m.find()) {
        processRunStatus = processRunStatus.replace(m.group(), "");
    }
   return processRunStatus;
}