#Util class list
- ObjectUtils
- JsonUtils
##ObjectUtils
If you want check object(String, List, Map
)is empty or not, you can use this util.
if(ObjectUtils.isEmpty(aa)){
// Object is empty.
// do somthing
}
else{
// Object is not empty.
// do somthing
}
For korean 블로그 내용보기
##JsonUtils
you can convert String
to Json
/ Json
to String
you can override toString()
function in class file.
when you print class instance, class will print json format
@Override
public String toString() {
return JsonUtils.toJson(this);
}