helps read excel file in java

I need to store the information of an xls file, in an arraylist, getting its columns one by one, I currently get all the file information, but I have no idea how to save each row in an arraylist, actually this is what I have

xls file format

rut carrera_id  Seccion       Fecha_I
11  14460-03    DEJ4501-001   12-10-2017
11  14460-03    DEJ4501-001   19-10-2017
22  14460-03    DEJ4501-001   12-10-2017
22  14460-03    DEJ4501-001   19-10-2017
22  14460-03    DEJ4501-001   26-10-2017
23  14460-03    DEJ4501-001   12-10-2017
23  14460-03    DEJ4501-001   19-10-2017
24  14460-03    DEJ4501-001   12-10-2017
25  14460-03    DEJ4501-001   12-10-2017
25  14460-03    DEJ4501-001   19-10-2017
25  14460-03    DEJ4501-001   26-10-2017
25  14460-03    DEJ4501-001   15-10-2017

class that formats for the arraylist

public class Formato {
 String rut, carrera, seccion, fecha;

    public Formato() {
    }

    public Formato(String rut, String carrera, String seccion, String fecha) {
        this.rut = rut;
        this.carrera = carrera;
        this.seccion = seccion;
        this.fecha = fecha;
    }

    public String getRut() {
        return rut;
    }

    public void setRut(String rut) {
        this.rut = rut;
    }

    public String getCarrera() {
        return carrera;
    }

    public void setCarrera(String carrera) {
        this.carrera = carrera;
    }

    public String getSeccion() {
        return seccion;
    }

    public void setSeccion(String seccion) {
        this.seccion = seccion;
    }

    public String getFecha() {
        return fecha;
    }

    public void setFecha(String fecha) {
        this.fecha = fecha;
    }

method where I read the xls file, and where I should save each row in the arraylist

public static void main(String[] args)  {
        try{
        FileInputStream file= new FileInputStream(new File("C:\Users\javie\Desktop\ReporteInasistencias2017_2.xls"));
        HSSFWorkbook wb= new HSSFWorkbook(file);
        HSSFSheet sheet=wb.getSheetAt(0);
        ArrayList<Formato> storage=new ArrayList();

        FormulaEvaluator eva=wb.getCreationHelper().createFormulaEvaluator();

        for(Row row: sheet){
            for(Cell cell:row){
                switch(eva.evaluateInCell(cell).getCellType()){
                    case Cell.CELL_TYPE_NUMERIC:
                        System.out.print(cell.getNumericCellValue()+"\t\t");
                        break;
                    case Cell.CELL_TYPE_STRING:
                            System.out.print(cell.getStringCellValue()+"\t\t");
                            break;
                }
            }
            System.out.println();
        }

    }catch(FileNotFoundException e){
        System.out.println("ruta incorrecta");
    }catch(IOException e){
        System.out.println("error al leer el archivo");
    }

I need to keep every row in the arraylist storage, I hope you can help me

Update

I currently manage to save all the columns, but with something not very orthodox, I need you to help me improve the code, I currently have this:

public static void main(String[] args)  {
        try{
        FileInputStream file= new FileInputStream(new File("C:\Users\javie\Desktop\ReporteInasistencias2017_2.xls"));
        HSSFWorkbook wb= new HSSFWorkbook(file);
        HSSFSheet sheet=wb.getSheetAt(0);

        FormulaEvaluator eva=wb.getCreationHelper().createFormulaEvaluator();
        ArrayList<String> rut=new ArrayList();
        ArrayList<String> carrera=new ArrayList();
        ArrayList<String> seccion=new ArrayList();
        ArrayList<String> fecha=new ArrayList();
        ArrayList<Formato> excelArray=new ArrayList();

        for (int j=0; j< sheet.getLastRowNum()+1; j++) {
        Row row = sheet.getRow(j);
        Cell cell = row.getCell(0); 
        rut.add(cell.toString());
        }

        for (int j=0; j< sheet.getLastRowNum()+1; j++) {
        Row row = sheet.getRow(j);
        Cell cell = row.getCell(1); 
        carrera.add(cell.toString());
        }

        for (int j=0; j< sheet.getLastRowNum()+1; j++) {
        Row row = sheet.getRow(j);
        Cell cell = row.getCell(2); 
        seccion.add(cell.toString());
        }

        for (int j=0; j< sheet.getLastRowNum()+1; j++) {
        Row row = sheet.getRow(j);
        Cell cell = row.getCell(3);
        fecha.add(cell.toString());
        }


        for(int i=1;i<rut.size();i++){
            Formato ft=new Formato();
            ft.setRut(rut.get(i));
            ft.setCarrera(carrera.get(i));
            ft.setSeccion(seccion.get(i));
            ft.setFecha(fecha.get(i));
            excelArray.add(ft);

            System.out.println("rut del alummno: "+ft.getRut()+", carrera del alummno: "+ft.getCarrera()+", seccion del Alummno: "+ft.getSeccion()+", fecha de inasistencia: "+ft.getFecha());

        }
        System.out.println("arreglo: "+excelArray.size());
    }catch(FileNotFoundException e){

    }catch(IOException e){

    }

  }

currently everything works fine, but I want to optimize all those for