String sftimeString="^[0-9]*:[0-9]*:[0-9]*$";
Pattern pattern=Pattern.compile(sftimeString);
if(pattern.matcher(jtxx.getSc()).matches()){
//匹配后的逻辑
}
Pattern pattern=Pattern.compile(sftimeString);
if(pattern.matcher(jtxx.getSc()).matches()){
//匹配后的逻辑
}