Data not set in excel - excel

Question

i have a piece of code to right into excel sheet,it is based on the row number and column name specified ,my issue is that if a column name is null then value will not set in the rest of the columns.
in this excel no value get added after Column 'D'
Below is my code
public boolean setExcelData(String sheetName, String colName, int rowNum, String data) throws AutoException {
dataFile();
try {
if (rowNum <= 0)
throw new AutoException(EXCEPTIION);
int index = wb.getSheetIndex(sheetName);
int colNum = -1;
if (index == -1)
throw new AutoException(EXCEPTIION);
XSSFSheet sheet = wb.getSheetAt(index);
Row row = sheet.getRow(0);
for (int i = 0; i < row.getLastCellNum(); i++) {
System.out.println(row.getCell(i));
if (row.getCell(i) == null) {
throw new AutoException(EXCEPTIION);
} else if (row.getCell(i).getStringCellValue().trim().equals(colName)) {
colNum = i;
break;
}
}
if (colNum == -1)
throw new AutoException(EXCEPTIION);
sheet.autoSizeColumn(colNum);
row = sheet.getRow(rowNum - 1);
if (row == null)
row = sheet.createRow(rowNum - 1);
Cell cell = row.getCell(colNum);
if (cell == null)
cell = row.createCell(colNum);
cell.setCellValue(data);
FileOutputStream fileOut = new FileOutputStream(excelFilePath);
wb.write(fileOut);
fileOut.close();
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
try {
wb.close();
in.close();
} catch (Exception e) {
}
}
return true;
}
Any one can help me out.
thanks in advance

Answer 1

skip the for loop iteration if columnname is null
for (int i = 0; i < row.getLastCellNum(); i++) {
System.out.println(row.getCell(i));
if (String.IsNullOrEmpty(colName))
continue;
if (row.getCell(i) == null) {
throw new AutoException(EXCEPTIION);
} else if (row.getCell(i).getStringCellValue().trim().equals(colName)) {
colNum = i;
break;
}
}