How do I obtain Excel's cell data type?
Category: org.apache.poi, viewed: 3512 time(s).
In this example we try to obtain the Excel's cell data type so that we can read
the value using the right method. The data to be read is contained in a file named
celltype.xls. The below matrix depict how to file is look like.
| COL
ROW | 0 1 2 3 4
----|-------------------------
0 | 1 2 A B TRUE
1 | FALSE X Y Z 10
package org.kodejava.example.poi;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.Iterator;
public class ObtainingCellType {
public static void main(String[] args) throws Exception {
String filename = "..\\celltype.xls";
FileInputStream fis = null;
try {
fis = new FileInputStream(filename);
HSSFWorkbook workbook = new HSSFWorkbook(fis);
HSSFSheet sheet = workbook.getSheetAt(0);
Iterator rows = sheet.rowIterator();
while (rows.hasNext()) {
HSSFRow row = (HSSFRow) rows.next();
Iterator cells = row.cellIterator();
while (cells.hasNext()) {
HSSFCell cell = (HSSFCell) cells.next();
int cellType = cell.getCellType();
//
// Compare if the type is string or numeric or boolean
//
if (cellType == HSSFCell.CELL_TYPE_STRING) {
System.out.println("[" + cell.getRowIndex() + ", "
+ cell.getColumnIndex() + "] = STRING; Value = "
+ cell.getRichStringCellValue().toString());
} else if (cellType == HSSFCell.CELL_TYPE_NUMERIC) {
System.out.println("[" + cell.getRowIndex() + ", "
+ cell.getColumnIndex() + "] = NUMERIC; Value = "
+ cell.getNumericCellValue());
} else if (cellType == HSSFCell.CELL_TYPE_BOOLEAN) {
System.out.println("[" + cell.getRowIndex() + ", "
+ cell.getColumnIndex() + "] = BOOLEAN; Value = "
+ cell.getBooleanCellValue());
}
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} finally {
if (fis != null) {
fis.close();
}
}
}
}
Our program iterates the Excel file rows and cells and produce the following
output:
[0, 0] = NUMERIC; Value = 1.0
[0, 1] = NUMERIC; Value = 2.0
[0, 2] = STRING; Value = A
[0, 3] = STRING; Value = B
[0, 4] = BOOLEAN; Value = true
[1, 0] = BOOLEAN; Value = false
[1, 1] = STRING; Value = X
[1, 2] = STRING; Value = Y
[1, 3] = STRING; Value = Z
[1, 4] = NUMERIC; Value = 10.0
Download Hundreds of Complimentary Industry Resources
Get hundreds of popular Industry magazines, white papers, webinars, podcasts, and more;
all available at no cost to you. With more than 600 complimentary offers, you'll find
plenty of titles to suit your professional interests and needs.
Click Here and Sign up today!
