org.apache.poi.ss.usermodel
Interface Cell

All Known Implementing Classes:

HSSFCell, SXSSFCell, XSSFCell

public interface Cell

High level representation of a cell in a row of a spreadsheet.

Cells can be numeric, formula-based or string-based (text). The cell type specifies this. String cells cannot conatin numbers and numeric cells cannot contain strings (at least according to our model). Client apps should do the conversions themselves. Formula cells have the formula string, as well as the formula result, which can be numeric or string.

Cells should have their number (0 based) before being added to a row.

CELL_TYPE_NUMERIC

static final int CELL_TYPE_NUMERIC

Numeric Cell type (0)

See Also:

setCellType(int), getCellType(), Constant Field Values

CELL_TYPE_STRING

static final int CELL_TYPE_STRING

String Cell type (1)

See Also:

setCellType(int), getCellType(), Constant Field Values

CELL_TYPE_FORMULA

static final int CELL_TYPE_FORMULA

Formula Cell type (2)

See Also:

setCellType(int), getCellType(), Constant Field Values

CELL_TYPE_BLANK

static final int CELL_TYPE_BLANK

Blank Cell type (3)

See Also:

setCellType(int), getCellType(), Constant Field Values

CELL_TYPE_BOOLEAN

static final int CELL_TYPE_BOOLEAN

Boolean Cell type (4)

See Also:

setCellType(int), getCellType(), Constant Field Values

CELL_TYPE_ERROR

static final int CELL_TYPE_ERROR

Error Cell type (5)

See Also:

setCellType(int), getCellType(), Constant Field Values

getColumnIndex

int getColumnIndex()

Returns column index of this cell

Returns:

zero-based column index of a column in a sheet.

getRowIndex

int getRowIndex()

Returns row index of a row in the sheet that contains this cell

Returns:

zero-based row index of a row in the sheet that contains this cell

getSheet

Sheet getSheet()

Returns the sheet this cell belongs to

Returns:

the sheet this cell belongs to

getRow

Row getRow()

Returns the Row this cell belongs to

Returns:

the Row that owns this cell

setCellType

void setCellType(int cellType)

Set the cells type (numeric, formula or string).

If the cell currently contains a value, the value will be converted to match the new type, if possible. Formatting is generally lost in the process however.

If what you want to do is get a String value for your numeric cell, stop!. This is not the way to do it. Instead, for fetching the string value of a numeric or boolean or date cell, use DataFormatter instead.

Throws:

java.lang.IllegalArgumentException - if the specified cell type is invalid

java.lang.IllegalStateException - if the current value cannot be converted to the new type

See Also:

CELL_TYPE_NUMERIC, CELL_TYPE_STRING, CELL_TYPE_FORMULA, CELL_TYPE_BLANK, CELL_TYPE_BOOLEAN, CELL_TYPE_ERROR

getCellType

int getCellType()

Return the cell type.

Returns:

the cell type

See Also:

CELL_TYPE_BLANK, CELL_TYPE_NUMERIC, CELL_TYPE_STRING, CELL_TYPE_FORMULA, CELL_TYPE_BOOLEAN, CELL_TYPE_ERROR

getCachedFormulaResultType

int getCachedFormulaResultType()

Only valid for formula cells

Returns:

one of (CELL_TYPE_NUMERIC, CELL_TYPE_STRING, CELL_TYPE_BOOLEAN, CELL_TYPE_ERROR) depending on the cached value of the formula

setCellValue

void setCellValue(double value)

Set a numeric value for the cell

Parameters:

value - the numeric value to set this cell to. For formulas we'll set the precalculated value, for numerics we'll set its value. For other types we will change the cell to a numeric cell and set its value.

setCellValue

void setCellValue(java.util.Date value)

Converts the supplied date to its equivalent Excel numeric value and sets that into the cell.

Note - There is actually no 'DATE' cell type in Excel. In many cases (when entering date values), Excel automatically adjusts the cell style to some date format, creating the illusion that the cell data type is now something besides CELL_TYPE_NUMERIC. POI does not attempt to replicate this behaviour. To make a numeric cell display as a date, use setCellStyle(CellStyle) etc.

Parameters:

value - the numeric value to set this cell to. For formulas we'll set the precalculated value, for numerics we'll set its value. For other types we will change the cell to a numerics cell and set its value.

setCellValue

void setCellValue(java.util.Calendar value)

Set a date value for the cell. Excel treats dates as numeric so you will need to format the cell as a date.

This will set the cell value based on the Calendar's timezone. As Excel does not support timezones this means that both 20:00+03:00 and 20:00-03:00 will be reported as the same value (20:00) even that there are 6 hours difference between the two times. This difference can be preserved by using setCellValue(value.getTime()) which will automatically shift the times to the default timezone.

Parameters:

value - the date value to set this cell to. For formulas we'll set the precalculated value, for numerics we'll set its value. For othertypes we will change the cell to a numeric cell and set its value.

setCellValue

void setCellValue(RichTextString value)

Set a rich string value for the cell.

Parameters:

value - value to set the cell to. For formulas we'll set the formula string, for String cells we'll set its value. For other types we will change the cell to a string cell and set its value. If value is null then we will change the cell to a Blank cell.

setCellValue

void setCellValue(java.lang.String value)

Set a string value for the cell.

Parameters:

value - value to set the cell to. For formulas we'll set the formula string, for String cells we'll set its value. For other types we will change the cell to a string cell and set its value. If value is null then we will change the cell to a Blank cell.

setCellFormula

void setCellFormula(java.lang.String formula)
                    throws FormulaParseException

Sets formula for this cell.

Note, this method only sets the formula string and does not calculate the formula value. To set the precalculated value use setCellValue(double) or setCellValue(String)

Parameters:

formula - the formula to set, e.g. "SUM(C4:E4)". If the argument is null then the current formula is removed.

Throws:

FormulaParseException - if the formula has incorrect syntax or is otherwise invalid

getCellFormula

java.lang.String getCellFormula()

Return a formula for the cell, for example, SUM(C4:E4)

Returns:

a formula for the cell

Throws:

java.lang.IllegalStateException - if the cell type returned by getCellType() is not CELL_TYPE_FORMULA

getNumericCellValue

double getNumericCellValue()

Get the value of the cell as a number.

For strings we throw an exception. For blank cells we return a 0. For formulas or error cells we return the precalculated value;

Returns:

the value of the cell as a number

Throws:

java.lang.IllegalStateException - if the cell type returned by getCellType() is CELL_TYPE_STRING

java.lang.NumberFormatException - if the cell value isn't a parsable double.

See Also:

for turning this number into a string similar to that which Excel would render this number as.

getDateCellValue

java.util.Date getDateCellValue()

Get the value of the cell as a date.

For strings we throw an exception. For blank cells we return a null.

Returns:

the value of the cell as a date

Throws:

java.lang.IllegalStateException - if the cell type returned by getCellType() is CELL_TYPE_STRING

java.lang.NumberFormatException - if the cell value isn't a parsable double.

See Also:

for formatting this date into a string similar to how excel does.

getRichStringCellValue

RichTextString getRichStringCellValue()

Get the value of the cell as a XSSFRichTextString

For numeric cells we throw an exception. For blank cells we return an empty string. For formula cells we return the pre-calculated value if a string, otherwise an exception.

Returns:

the value of the cell as a XSSFRichTextString

getStringCellValue

java.lang.String getStringCellValue()

Get the value of the cell as a string

For numeric cells we throw an exception. For blank cells we return an empty string. For formulaCells that are not string Formulas, we throw an exception.

Returns:

the value of the cell as a string

setCellValue

void setCellValue(boolean value)

Set a boolean value for the cell

Parameters:

value - the boolean value to set this cell to. For formulas we'll set the precalculated value, for booleans we'll set its value. For other types we will change the cell to a boolean cell and set its value.

setCellErrorValue

void setCellErrorValue(byte value)

Set a error value for the cell

Parameters:

value - the error value to set this cell to. For formulas we'll set the precalculated value , for errors we'll set its value. For other types we will change the cell to an error cell and set its value.

See Also:

FormulaError

getBooleanCellValue

boolean getBooleanCellValue()

Get the value of the cell as a boolean.

For strings, numbers, and errors, we throw an exception. For blank cells we return a false.

Returns:

the value of the cell as a boolean

Throws:

java.lang.IllegalStateException - if the cell type returned by getCellType() is not CELL_TYPE_BOOLEAN, CELL_TYPE_BLANK or CELL_TYPE_FORMULA

getErrorCellValue

byte getErrorCellValue()

Get the value of the cell as an error code.

For strings, numbers, and booleans, we throw an exception. For blank cells we return a 0.

Returns:

the value of the cell as an error code

Throws:

java.lang.IllegalStateException - if the cell type returned by getCellType() isn't CELL_TYPE_ERROR

See Also:

for error codes

setCellStyle

void setCellStyle(CellStyle style)

Set the style for the cell. The style should be an CellStyle created/retreived from the Workbook.

Parameters:

style - reference contained in the workbook. If the value is null then the style information is removed causing the cell to used the default workbook style.

See Also:

Workbook.createCellStyle()

getCellStyle

CellStyle getCellStyle()

Return the cell's style.

Returns:

the cell's style. Always not-null. Default cell style has zero index and can be obtained as workbook.getCellStyleAt(0)

See Also:

Workbook.getCellStyleAt(short)

setAsActiveCell

void setAsActiveCell()

Sets this cell as the active cell for the worksheet

setCellComment

void setCellComment(Comment comment)

Assign a comment to this cell

Parameters:

comment - comment associated with this cell

getCellComment

Comment getCellComment()

Returns comment associated with this cell

Returns:

comment associated with this cell or null if not found

removeCellComment

void removeCellComment()

Removes the comment for this cell, if there is one.

getHyperlink

Hyperlink getHyperlink()

Returns:

hyperlink associated with this cell or null if not found

setHyperlink

void setHyperlink(Hyperlink link)

Assign a hyperlink to this cell

Parameters:

link - hyperlink associated with this cell

removeHyperlink

void removeHyperlink()

Removes the hyperlink for this cell, if there is one.

getArrayFormulaRange

CellRangeAddress getArrayFormulaRange()

Only valid for array formula cells

Returns:

range of the array formula group that the cell belongs to.

isPartOfArrayFormulaGroup

boolean isPartOfArrayFormulaGroup()

Returns:

true if this cell is part of group of cells having a common array formula.