You can use the SELECT INTO statement to export formatted data to a file.

Data Export with an SQL Query

The following query exports data into a file formatted in comma-separated values (CSV):

boolean ret = stat.execute("SELECT LastName, Email INTO [csv://c:/Contacts.txt] FROM [Contacts] WHERE FirstName = 'Bob'");
System.out.println(stat.getUpdateCount()+" rows affected");

You can specify other file formats in the URI. The following example exports tab-separated values:

Statement stat = conn.createStatement();
boolean ret = stat.execute("SELECT * INTO [Contacts] IN 'csv://filename=c:/Contacts.csv;delimiter=tab' FROM [Contacts] WHERE FirstName = 'Bob'");
System.out.println(stat.getUpdateCount()+" rows affected");