How to check for Empty data Condition in spark Dataset in JAVA [duplicate]

I've been trying to do a check for result dataset in spark of whether it is empty or has data. I did below following things.

dataset.rdd().isEmpty();

2.

try{
           dataset.head(1)
         }catch(Exception e){
          status ="No data";
          }

3.

try{
         dataset.first();
          }catch(Exception e){  
           status ="No data";
          }

4.

dataset.limit(1).count()>0;

All this are taking a lot of time to complete when comparatively huge data is present. I need to get a efficient solution for this.