Java imports data from excel into mysql

package browser; 
 
import java.io.File; 
import java.sql.*; 
import jxl.Cell; 
import jxl.Sheet; 
import jxl.Workbook; 
 
public class PushExcelToMysql { 
 public static void main(String[] args) throws Exception { 
 
 Sheet sheet; 
 Workbook workbook; 
 Cell [][] cells=new Cell[3][3]; 
 try{ 
 workbook = Workbook.getWorkbook(new File("E:\\lalala.xls")); 
 sheet = workbook.getSheet(0); 
 for(int i=0;i<3;i++){ 
 for(int j=0;j<3;j++){ 
  cells[i][j]=sheet.getCell(j,i); 
 } 
 } 
 }catch (Exception e) { 
 e.printStackTrace(); 
 } 
 
 try{ 
 Class.forName("com.mysql.jdbc.Driver"); 
 }catch(Exception e){ 
 e.printStackTrace(); 
 } 
 Connection c=DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/test?characterEncoding=UTF-8", "root","root"); 
 String sql="insert into tosql(name,age,sex) values(?,?,?)"; 
 PreparedStatement ps=c.prepareStatement(sql); 
 for(int i=0;i<3;i++){ 
 ps.setString(1, cells[i][0].getContents()); 
 ps.setString(2, cells[i][1].getContents()); 
 ps.setString(3, cells[i][2].getContents()); 
 ps.execute(); 
 } 
 System.out.println("ok"); 
 } 
}