how to read a excel file in java
//You need Apache POI library in order to work this code
//Using Apache POI
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.Row;
public class ReadExcelFileDemo
{
public static void main(String args[]) throws IOException
{
//obtaining input bytes from a file
FileInputStream fis=new FileInputStream(new File("C:\\demo\\student.xls"));
//creating workbook instance that refers to .xls file
HSSFWorkbook wb=new HSSFWorkbook(fis);
//creating a Sheet object to retrieve the object
HSSFSheet sheet=wb.getSheetAt(0);
//evaluating cell type
FormulaEvaluator formulaEvaluator=wb.getCreationHelper().createFormulaEvaluator();
for(Row row: sheet) //iteration over row using for each loop
{
for(Cell cell: row) //iteration over cell using for each loop
{
switch(formulaEvaluator.evaluateInCell(cell).getCellType())
{
case Cell.CELL_TYPE_NUMERIC: //field that represents numeric cell type
//getting the value of the cell as a number
System.out.print(cell.getNumericCellValue()+ "\t\t");
break;
case Cell.CELL_TYPE_STRING: //field that represents string cell type
//getting the value of the cell as a string
System.out.print(cell.getStringCellValue()+ "\t\t");
break;
}
}
System.out.println();
}
}
}