import java.io.File;
import java.io.FileOutputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

public class ExcelDatabase {
public static void main(String[] args) throws Exception {
    Class.forName("com.mysql.jdbc.Driver");
    Connection connect = DriverManager.getConnection("jdbc:mysql://localhost/etc", "root", "");

    Statement statement = connect.createStatement();
    ResultSet resultSet = statement.executeQuery("select * from final");
    HSSFWorkbook workbook = new HSSFWorkbook();
    HSSFSheet spreadsheet = workbook.createSheet("engine report");
    HSSFRow row = spreadsheet.createRow(1);
    HSSFCell cell;
    cell = row.createCell(1);
    cell.setCellValue("engine_code");
    cell = row.createCell(2);
    cell.setCellValue("var1");
    cell = row.createCell(3);
    cell.setCellValue("var2");
    cell = row.createCell(4);
    cell.setCellValue("var3");
    cell = row.createCell(5);
    cell.setCellValue("var4");
    cell = row.createCell(6);
    cell.setCellValue("var5");
    cell = row.createCell(7);
    cell.setCellValue("User_Name");
    cell = row.createCell(8);
    cell.setCellValue("time_stamp");
    int i = 2;
    while (resultSet.next()) {
        row = spreadsheet.createRow(i);
        cell = row.createCell(1);
        cell.setCellValue(resultSet.getInt("ec"));
        cell = row.createCell(2);
        cell.setCellValue(resultSet.getString("v1"));
        cell = row.createCell(3);
        cell.setCellValue(resultSet.getString("v2"));
        cell = row.createCell(4);
        cell.setCellValue(resultSet.getString("v3"));
        cell = row.createCell(5);
        cell.setCellValue(resultSet.getString("v4"));
        cell = row.createCell(6);
        cell.setCellValue(resultSet.getString("v5"));
        cell = row.createCell(7);
        cell.setCellValue(resultSet.getString("user"));
        cell = row.createCell(8);
        cell.setCellValue(resultSet.getString("time"));
        i++;
    }
    FileOutputStream out = new FileOutputStream(new File("exceldatabase.xls"));
    workbook.write(out);
    out.close();
    System.out.println("exceldatabase.xls written successfully");
 }
}