Writing To Excel File From Database Including Column Names

I need to print contents of database to excel file.Apache POI is the solution but I am not finding a way to print the DB column names/headers into the excel.

E.g.:

incase csv we have opencsv CSVWriter writer = new CSVWriter(new FileWriter(fileName));
System.out.println("writer");
writer.writeAll(rs, true);

will print the db contents with the column headers dynamically whatever the query may be.

Any solution where we can print data and column names without know the query previously as we are getting query at the run time and each time the query is different.

INPUT
DATABASE
Emp Id. Emp Name

111 Mr.Test

EXCEL
Emp Id. Emp Name

111 Mr.Test