Question

My code like this

ResultSet rs = statement.executeQuery(
    "SELECT SUM(column1) FROM table where column2=name "); 
system.out.println(rs)

Is that correct? Or how do I, get the sum value from a column with SQL in java? Can you write a little example?

Answer 1

ResultSet rs = statement.executeQuery(
   "SELECT SUM(column1) FROM table where column2=name "); 
System.out.println(rs);// this is wrong 

this will print ResultSet object.

this should be

ResultSet rs = statement.executeQuery(
   "SELECT SUM(column1) FROM table where column2=name "); 
if(rs.next()){
System.out.println(rs.getInt(1));
}