Hi you just need to include an external jxl jar and you can go through the same tutorial which will help you understand the process of reading excel files.. for your referance i am pasting some ref. code which reads very first sheet of excel and creates a resultset.
public List<String> read(String key) throws IOException {
List<String> resultSet = new ArrayList<String>();
File inputWorkbook = new File(inputFile);
if(inputWorkbook.exists()){
Workbook w;
try {
w = Workbook.getWorkbook(inputWorkbook);
// Get the first sheet
Sheet sheet = w.getSheet(0);
// Loop over column and lines
for (int j = 0; j < sheet.getRows(); j++) {
Cell cell = sheet.getCell(0, j);
if(cell.getContents().equalsIgnoreCase(key)){
for (int i = 0; i < sheet.getColumns(); i++) {
Cell cel = sheet.getCell(i, j);
resultSet.add(cel.getContents());
}
}
continue;
}
} catch (BiffException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
else
{
resultSet.add("File not found..!");
}
if(resultSet.size()==0){
resultSet.add("Data not found..!");
}
return resultSet;
}