SXSSFWorkbook (POI API Documentation)

java.lang.Object
- org.apache.poi.xssf.streaming.SXSSFWorkbook

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Iterable<Sheet>, Workbook

Direct Known Subclasses:

DeferredSXSSFWorkbook, SXSSFWorkbookWithCustomZipEntrySource
```
public class SXSSFWorkbook
extends java.lang.Object
implements Workbook
```
Streaming version of XSSFWorkbook implementing the "BigGridDemo" strategy. This allows to write very large files without running out of memory as only a configurable portion of the rows are kept in memory at any one time. You can provide a template workbook which is used as basis for the written data. See https://poi.apache.org/spreadsheet/how-to.html#sxssf for details. Please note that there are still things that still may consume a large amount of memory based on which features you are using, e.g. merged regions, comments, ... are still only stored in memory and thus may require a lot of memory if used extensively. SXSSFWorkbook defaults to using inline strings instead of a shared strings table. This is very efficient, since no document content needs to be kept in memory, but is also known to produce documents that are incompatible with some clients. With shared strings enabled all unique strings in the document has to be kept in memory. Depending on your document content this could use a lot more resources than with shared strings disabled. Carefully review your memory budget and compatibility needs before deciding whether to enable shared strings or not.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

protected static interface SXSSFWorkbook.ISheetInjector

protected class SXSSFWorkbook.SheetIterator<T extends Sheet>

Nested Classes
Modifier and Type	Class and Description
`protected static interface`	`SXSSFWorkbook.ISheetInjector`
`protected class`	`SXSSFWorkbook.SheetIterator<T extends Sheet>`

Field Summary

Fields
Modifier and Type	Field and Description
`protected SharedStringsTable`	`_sharedStringSource` shared string table - a cache of strings in this workbook
`protected XSSFWorkbook`	`_wb`
`static int`	`DEFAULT_WINDOW_SIZE` Specifies how many rows can be accessed at most via `SXSSFSheet.getRow(int)`.
`protected org.apache.commons.compress.archivers.zip.Zip64Mode`	`zip64Mode` controls whether Zip64 mode is used - Always became the default in POI 5.0.0

Fields inherited from interface org.apache.poi.ss.usermodel.Workbook
PICTURE_TYPE_DIB, PICTURE_TYPE_EMF, PICTURE_TYPE_JPEG, PICTURE_TYPE_PICT, PICTURE_TYPE_PNG, PICTURE_TYPE_WMF

Constructor Summary

Constructors
Constructor and Description
`SXSSFWorkbook()` Construct a new workbook with default row window size
`SXSSFWorkbook(int rowAccessWindowSize)` Construct an empty workbook and specify the window for row access.
`SXSSFWorkbook(XSSFWorkbook workbook)` Construct a workbook from a template.
`SXSSFWorkbook(XSSFWorkbook workbook, int rowAccessWindowSize)` Constructs an workbook from an existing workbook.
`SXSSFWorkbook(XSSFWorkbook workbook, int rowAccessWindowSize, boolean compressTmpFiles)` Constructs an workbook from an existing workbook.
`SXSSFWorkbook(XSSFWorkbook workbook, int rowAccessWindowSize, boolean compressTmpFiles, boolean useSharedStringsTable)` Constructs an workbook from an existing workbook.

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`int`	`addOlePackage(byte[] oleData, java.lang.String label, java.lang.String fileName, java.lang.String command)` Adds an OLE package manager object with the given content to the sheet
`int`	`addPicture(byte[] pictureData, int format)` Adds a picture to the workbook.
`void`	`addToolPack(UDFFinder toopack)` Register a new toolpack in this workbook.
`Sheet`	`cloneSheet(int sheetNum)` Not implemented for SXSSFWorkbook Create a Sheet from an existing sheet in the Workbook.
`void`	`close()` Closes the underlying `XSSFWorkbook` and `OPCPackage` on which this Workbook is based, if any.
`protected org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream`	`createArchiveOutputStream(java.io.OutputStream out)`
`CellStyle`	`createCellStyle()` Create a new Cell style and add it to the workbook's style table
`DataFormat`	`createDataFormat()` Returns the instance of DataFormat for this workbook.
`EvaluationWorkbook`	`createEvaluationWorkbook()`
`Font`	`createFont()` Create a new Font and add it to the workbook's font table
`Name`	`createName()` Creates a new (uninitialised) defined name in this workbook
`SXSSFSheet`	`createSheet()` Create a Sheet for this Workbook, adds it to the sheets and returns the high level representation.
`SXSSFSheet`	`createSheet(java.lang.String sheetname)` Create a Sheet for this Workbook, adds it to the sheets and returns the high level representation.
`protected SheetDataWriter`	`createSheetDataWriter()`
`protected SXSSFWorkbook.ISheetInjector`	`createSheetInjector(SXSSFSheet sxSheet)`
`boolean`	`dispose()` Dispose of temporary files backing this workbook on disk.
`Font`	`findFont(boolean bold, short color, short fontHeight, java.lang.String name, boolean italic, boolean strikeout, short typeOffset, byte underline)` Finds a font that matches the one with the supplied attributes
`protected void`	`flushSheets()`
`int`	`getActiveSheetIndex()` Convenience method to get the active sheet.
`java.util.List<? extends Name>`	`getAllNames()` Returns all defined names
`java.util.List<? extends PictureData>`	`getAllPictures()` Gets all pictures from the Workbook.
`CellStyle`	`getCellStyleAt(int idx)` Get the cell style object at the given index
`CreationHelper`	`getCreationHelper()` Returns an object that handles instantiating concrete classes of the various instances one needs for HSSF, XSSF and SXSSF.
`int`	`getFirstVisibleTab()` Gets the first tab that is displayed in the list of tabs in excel.
`Font`	`getFontAt(int idx)` Get the font at the given index number
`boolean`	`getForceFormulaRecalculation()` Whether Excel will be asked to recalculate all formulas when the workbook is opened.
`Row.MissingCellPolicy`	`getMissingCellPolicy()` Retrieves the current policy on what to do when getting missing or blank cells from a row.
`Name`	`getName(java.lang.String name)`
`java.util.List<? extends Name>`	`getNames(java.lang.String name)` Returns all defined names with the given name.
`int`	`getNumberOfFonts()` Get the number of fonts in the font table
`int`	`getNumberOfFontsAsInt()` Deprecated.
`int`	`getNumberOfNames()`
`int`	`getNumberOfSheets()` Get the number of spreadsheets in the workbook
`int`	`getNumCellStyles()` Get the number of styles the workbook contains
`java.lang.String`	`getPrintArea(int sheetIndex)` Retrieves the reference for the printarea of the specified sheet, the sheet name is appended to the reference even if it was not specified.
`int`	`getRandomAccessWindowSize()` See the constructors for a more detailed description of the sliding window of rows.
`protected SharedStringsTable`	`getSharedStringSource()`
`SXSSFSheet`	`getSheet(java.lang.String name)` Get sheet with the given name
`SXSSFSheet`	`getSheetAt(int index)` Get the Sheet object at the given index.
`protected XSSFSheet`	`getSheetFromZipEntryName(java.lang.String sheetRef)`
`int`	`getSheetIndex(Sheet sheet)` Returns the index of the given sheet
`int`	`getSheetIndex(java.lang.String name)` Returns the index of the sheet by his name
`java.lang.String`	`getSheetName(int sheet)` Set the sheet name
`SheetVisibility`	`getSheetVisibility(int sheetIx)` Get the visibility (visible, hidden, very hidden) of a sheet in this workbook
`SpreadsheetVersion`	`getSpreadsheetVersion()` Returns the spreadsheet version (EXCLE2007) of this workbook
`XSSFWorkbook`	`getXSSFWorkbook()`
`protected void`	`injectData(ZipEntrySource zipEntrySource, java.io.OutputStream out)`
`boolean`	`isCompressTempFiles()` Get whether temp files should be compressed.
`protected boolean`	`isDate1904()`
`boolean`	`isHidden()`
`boolean`	`isSheetHidden(int sheetIx)` Check whether a sheet is hidden.
`boolean`	`isSheetVeryHidden(int sheetIx)` Check whether a sheet is very hidden.
`java.util.Iterator<Sheet>`	`iterator()` Alias for `sheetIterator()` to allow foreach loops
`int`	`linkExternalWorkbook(java.lang.String name, Workbook workbook)` Not implemented for SXSSFWorkbook Adds the LinkTable records required to allow formulas referencing the specified external workbook to be added to this one.
`void`	`removeName(Name name)` Remove the given defined name
`void`	`removePrintArea(int sheetIndex)` Delete the printarea for the sheet specified
`void`	`removeSheetAt(int index)` Removes sheet at the given index
`void`	`setActiveSheet(int sheetIndex)` Convenience method to set the active sheet.
`void`	`setCompressTempFiles(boolean compress)` Set whether temp files should be compressed.
`void`	`setFirstVisibleTab(int sheetIndex)` Sets the first tab that is displayed in the list of tabs in excel.
`void`	`setForceFormulaRecalculation(boolean value)` Whether the application shall perform a full recalculation when the workbook is opened.
`void`	`setHidden(boolean hiddenFlag)`
`void`	`setMissingCellPolicy(Row.MissingCellPolicy missingCellPolicy)` Sets the policy on what to do when getting missing or blank cells from a row.
`void`	`setPrintArea(int sheetIndex, int startColumn, int endColumn, int startRow, int endRow)` For the Convenience of Java Programmers maintaining pointers.
`void`	`setPrintArea(int sheetIndex, java.lang.String reference)` Sets the printarea for the sheet provided
`protected void`	`setRandomAccessWindowSize(int rowAccessWindowSize)`
`void`	`setSelectedTab(int index)` Sets the tab whose data is actually seen when the sheet is opened.
`void`	`setSheetHidden(int sheetIx, boolean hidden)` Hide or unhide a sheet.
`void`	`setSheetName(int sheet, java.lang.String name)` Set the sheet name.
`void`	`setSheetOrder(java.lang.String sheetname, int pos)` Sets the order of appearance for a given sheet.
`void`	`setSheetVisibility(int sheetIx, SheetVisibility visibility)` Hide or unhide a sheet.
`void`	`setZip64Mode(org.apache.commons.compress.archivers.zip.Zip64Mode zip64Mode)`
`java.util.Iterator<Sheet>`	`sheetIterator()` Returns an iterator of the sheets in the workbook in sheet order.
`void`	`write(java.io.OutputStream stream)` Write out this workbook to an OutputStream.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Iterable
forEach, spliterator

- Field Detail
  - DEFAULT_WINDOW_SIZE
```
public static final int DEFAULT_WINDOW_SIZE
```
    Specifies how many rows can be accessed at most via SXSSFSheet.getRow(int). When a new node is created via SXSSFSheet.createRow(int) and the total number of unflushed records would exceed the specified value, then the row with the lowest index value is flushed and cannot be accessed via SXSSFSheet.getRow(int) anymore.
    
    See Also:
    
    Constant Field Values
  - _wb
```
protected final XSSFWorkbook _wb
```
  - _sharedStringSource
```
protected final SharedStringsTable _sharedStringSource
```
    shared string table - a cache of strings in this workbook
  - zip64Mode
```
protected org.apache.commons.compress.archivers.zip.Zip64Mode zip64Mode
```
    controls whether Zip64 mode is used - Always became the default in POI 5.0.0
- Constructor Detail
  - SXSSFWorkbook
```
public SXSSFWorkbook()
```
    Construct a new workbook with default row window size
  - SXSSFWorkbook
```
public SXSSFWorkbook(XSSFWorkbook workbook)
```
    Construct a workbook from a template.
    There are three use-cases to use SXSSFWorkbook(XSSFWorkbook) :
    1. Append new sheets to existing workbooks. You can open existing workbook from a file or create on the fly with XSSF.
    2. Append rows to existing sheets. The row number MUST be greater than max(rownum) in the template sheet.
    3. Use existing workbook as a template and re-use global objects such as cell styles, formats, images, etc.
    All three use cases can work in a combination. What is not supported:
    - Access initial cells and rows in the template. After constructing all internal windows are empty and SXSSFSheet.getRow(int) and SXSSFRow.getCell(int) return null.
    - Override existing cells and rows. The API silently allows that but the output file is invalid and Excel cannot read it.
    Parameters:
    
    workbook - the template workbook
  - SXSSFWorkbook
```
public SXSSFWorkbook(XSSFWorkbook workbook,
                     int rowAccessWindowSize)
```
    Constructs an workbook from an existing workbook.
    When a new node is created via SXSSFSheet.createRow(int) and the total number of unflushed records would exceed the specified value, then the row with the lowest index value is flushed and cannot be accessed via SXSSFSheet.getRow(int) anymore.
    
    A value of -1 indicates unlimited access. In this case all records that have not been flushed by a call to flush() are available for random access.
    
    A value of 0 is not allowed because it would flush any newly created row without having a chance to specify any cells.
    
    Parameters:
    
    rowAccessWindowSize - the number of rows that are kept in memory until flushed out, see above.
  - SXSSFWorkbook
```
public SXSSFWorkbook(XSSFWorkbook workbook,
                     int rowAccessWindowSize,
                     boolean compressTmpFiles)
```
    Constructs an workbook from an existing workbook.
    When a new node is created via SXSSFSheet.createRow(int) and the total number of unflushed records would exceed the specified value, then the row with the lowest index value is flushed and cannot be accessed via SXSSFSheet.getRow(int) anymore.
    
    A value of -1 indicates unlimited access. In this case all records that have not been flushed by a call to flush() are available for random access.
    
    A value of 0 is not allowed because it would flush any newly created row without having a chance to specify any cells.
    
    Parameters:
    
    rowAccessWindowSize - the number of rows that are kept in memory until flushed out, see above.
    
    compressTmpFiles - whether to use gzip compression for temporary files
  - SXSSFWorkbook
```
public SXSSFWorkbook(XSSFWorkbook workbook,
                     int rowAccessWindowSize,
                     boolean compressTmpFiles,
                     boolean useSharedStringsTable)
```
    Constructs an workbook from an existing workbook.
    When a new node is created via SXSSFSheet.createRow(int) and the total number of unflushed records would exceed the specified value, then the row with the lowest index value is flushed and cannot be accessed via SXSSFSheet.getRow(int) anymore.
    
    A value of -1 indicates unlimited access. In this case all records that have not been flushed by a call to flush() are available for random access.
    
    A value of 0 is not allowed because it would flush any newly created row without having a chance to specify any cells.
    
    Parameters:
    
    workbook - the template workbook
    
    rowAccessWindowSize - the number of rows that are kept in memory until flushed out, see above.
    
    compressTmpFiles - whether to use gzip compression for temporary files
    
    useSharedStringsTable - whether to use a shared strings table
  - SXSSFWorkbook
```
public SXSSFWorkbook(int rowAccessWindowSize)
```
    Construct an empty workbook and specify the window for row access.
    When a new node is created via SXSSFSheet.createRow(int) and the total number of unflushed records would exceed the specified value, then the row with the lowest index value is flushed and cannot be accessed via SXSSFSheet.getRow(int) anymore.
    
    A value of -1 indicates unlimited access. In this case all records that have not been flushed by a call to flush() are available for random access.
    
    A value of 0 is not allowed because it would flush any newly created row without having a chance to specify any cells.
    
    Parameters:
    
    rowAccessWindowSize - the number of rows that are kept in memory until flushed out, see above.
- Method Detail
  - getRandomAccessWindowSize
```
public int getRandomAccessWindowSize()
```
    See the constructors for a more detailed description of the sliding window of rows.
    
    Returns:
    
    The number of rows that are kept in memory at once before flushing them out.
  - setRandomAccessWindowSize
```
protected void setRandomAccessWindowSize(int rowAccessWindowSize)
```
  - setZip64Mode
```
@Beta
public void setZip64Mode(org.apache.commons.compress.archivers.zip.Zip64Mode zip64Mode)
```
    Parameters:
    
    zip64Mode - Zip64Mode
    
    Since:
    
    4.1.0
  - isCompressTempFiles
```
public boolean isCompressTempFiles()
```
    Get whether temp files should be compressed.
    
    Returns:
    
    whether to compress temp files
  - setCompressTempFiles
```
public void setCompressTempFiles(boolean compress)
```
    Set whether temp files should be compressed.
    SXSSF writes sheet data in temporary files (a temp file per-sheet) and the size of these temp files can grow to to a very large size, e.g. for a 20 MB csv data the size of the temp xml file become few GB large. If the "compress" flag is set to true then the temporary XML is gzipped.
    
    Please note the the "compress" option may cause performance penalty.
    
    Setting this option only affects compression for subsequent createSheet() calls.
    
    Parameters:
    
    compress - whether to compress temp files
  - getSharedStringSource
```
@Internal
protected SharedStringsTable getSharedStringSource()
```
  - createSheetDataWriter
```
protected SheetDataWriter createSheetDataWriter()
                                         throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - getSheetFromZipEntryName
```
protected XSSFSheet getSheetFromZipEntryName(java.lang.String sheetRef)
```
  - injectData
```
protected void injectData(ZipEntrySource zipEntrySource,
                          java.io.OutputStream out)
                   throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - createArchiveOutputStream
```
protected org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream createArchiveOutputStream(java.io.OutputStream out)
```
  - createSheetInjector
```
protected SXSSFWorkbook.ISheetInjector createSheetInjector(SXSSFSheet sxSheet)
                                                    throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - getXSSFWorkbook
```
public XSSFWorkbook getXSSFWorkbook()
```
  - getActiveSheetIndex
```
public int getActiveSheetIndex()
```
    Convenience method to get the active sheet. The active sheet is is the sheet which is currently displayed when the workbook is viewed in Excel. 'Selected' sheet(s) is a distinct concept.
    
    Specified by:
    
    getActiveSheetIndex in interface Workbook
    
    Returns:
    
    the index of the active sheet (0-based)
  - setActiveSheet
```
public void setActiveSheet(int sheetIndex)
```
    Convenience method to set the active sheet. The active sheet is is the sheet which is currently displayed when the workbook is viewed in Excel. 'Selected' sheet(s) is a distinct concept.
    
    Specified by:
    
    setActiveSheet in interface Workbook
    
    Parameters:
    
    sheetIndex - index of the active sheet (0-based)
  - getFirstVisibleTab
```
public int getFirstVisibleTab()
```
    Gets the first tab that is displayed in the list of tabs in excel.
    
    Specified by:
    
    getFirstVisibleTab in interface Workbook
    
    Returns:
    
    the first tab that to display in the list of tabs (0-based).
  - setFirstVisibleTab
```
public void setFirstVisibleTab(int sheetIndex)
```
    Sets the first tab that is displayed in the list of tabs in excel.
    
    Specified by:
    
    setFirstVisibleTab in interface Workbook
    
    Parameters:
    
    sheetIndex - the first tab that to display in the list of tabs (0-based)
  - setSheetOrder
```
public void setSheetOrder(java.lang.String sheetname,
                          int pos)
```
    Sets the order of appearance for a given sheet.
    
    Specified by:
    
    setSheetOrder in interface Workbook
    
    Parameters:
    
    sheetname - the name of the sheet to reorder
    
    pos - the position that we want to insert the sheet into (0 based)
  - setSelectedTab
```
public void setSelectedTab(int index)
```
    Sets the tab whose data is actually seen when the sheet is opened. This may be different from the "selected sheet" since excel seems to allow you to show the data of one sheet when another is seen "selected" in the tabs (at the bottom).
    
    Specified by:
    
    setSelectedTab in interface Workbook
    
    Parameters:
    
    index - the index of the sheet to select (0 based)
    
    See Also:
    
    Sheet.setSelected(boolean)
  - setSheetName
```
public void setSheetName(int sheet,
                         java.lang.String name)
```
    Set the sheet name.
    
    Specified by:
    
    setSheetName in interface Workbook
    
    Parameters:
    
    sheet - number (0 based)
    
    Throws:
    
    java.lang.IllegalArgumentException - if the name is greater than 31 chars or contains /\?*[]
    
    See Also:
    
    Workbook.createSheet(String), WorkbookUtil.createSafeSheetName(String nameProposal)
  - getSheetName
```
public java.lang.String getSheetName(int sheet)
```
    Set the sheet name
    
    Specified by:
    
    getSheetName in interface Workbook
    
    Parameters:
    
    sheet - sheet number (0 based)
    
    Returns:
    
    Sheet name
  - getSheetIndex
```
public int getSheetIndex(java.lang.String name)
```
    Returns the index of the sheet by his name
    
    Specified by:
    
    getSheetIndex in interface Workbook
    
    Parameters:
    
    name - the sheet name
    
    Returns:
    
    index of the sheet (0 based)
  - getSheetIndex
```
public int getSheetIndex(Sheet sheet)
```
    Returns the index of the given sheet
    
    Specified by:
    
    getSheetIndex in interface Workbook
    
    Parameters:
    
    sheet - the sheet to look up
    
    Returns:
    
    index of the sheet (0 based)
  - createSheet
```
public SXSSFSheet createSheet()
```
    Create a Sheet for this Workbook, adds it to the sheets and returns the high level representation. Use this to create new sheets.
    
    Specified by:
    
    createSheet in interface Workbook
    
    Returns:
    
    Sheet representing the new sheet.
  - createSheet
```
public SXSSFSheet createSheet(java.lang.String sheetname)
```
    Create a Sheet for this Workbook, adds it to the sheets and returns the high level representation. Use this to create new sheets.
    
    Specified by:
    
    createSheet in interface Workbook
    
    Parameters:
    
    sheetname - sheetname to set for the sheet.
    
    Returns:
    
    Sheet representing the new sheet.
    
    Throws:
    
    java.lang.IllegalArgumentException - if the name is greater than 31 chars or contains /\?*[]
    
    See Also:
    
    WorkbookUtil.createSafeSheetName(String nameProposal)
  - cloneSheet
```
@NotImplemented
public Sheet cloneSheet(int sheetNum)
```
    Not implemented for SXSSFWorkbook Create a Sheet from an existing sheet in the Workbook.
    
    Specified by:
    
    cloneSheet in interface Workbook
    
    Returns:
    
    Sheet representing the cloned sheet.
  - getNumberOfSheets
```
public int getNumberOfSheets()
```
    Get the number of spreadsheets in the workbook
    
    Specified by:
    
    getNumberOfSheets in interface Workbook
    
    Returns:
    
    the number of sheets
  - sheetIterator
```
public java.util.Iterator<Sheet> sheetIterator()
```
    Returns an iterator of the sheets in the workbook in sheet order. Includes hidden and very hidden sheets.
    
    Specified by:
    
    sheetIterator in interface Workbook
    
    Returns:
    
    an iterator of the sheets.
  - iterator
```
public java.util.Iterator<Sheet> iterator()
```
    Alias for sheetIterator() to allow foreach loops
    
    Specified by:
    
    iterator in interface java.lang.Iterable<Sheet>
  - getSheetAt
```
public SXSSFSheet getSheetAt(int index)
```
    Get the Sheet object at the given index.
    
    Specified by:
    
    getSheetAt in interface Workbook
    
    Parameters:
    
    index - of the sheet number (0-based physical and logical)
    
    Returns:
    
    Sheet at the provided index
  - getSheet
```
public SXSSFSheet getSheet(java.lang.String name)
```
    Get sheet with the given name
    
    Specified by:
    
    getSheet in interface Workbook
    
    Parameters:
    
    name - of the sheet
    
    Returns:
    
    Sheet with the name provided or null if it does not exist
  - removeSheetAt
```
public void removeSheetAt(int index)
```
    Removes sheet at the given index
    
    Specified by:
    
    removeSheetAt in interface Workbook
    
    Parameters:
    
    index - of the sheet to remove (0-based)
  - createFont
```
public Font createFont()
```
    Create a new Font and add it to the workbook's font table
    
    Specified by:
    
    createFont in interface Workbook
    
    Returns:
    
    new font object
  - findFont
```
public Font findFont(boolean bold,
                     short color,
                     short fontHeight,
                     java.lang.String name,
                     boolean italic,
                     boolean strikeout,
                     short typeOffset,
                     byte underline)
```
    Finds a font that matches the one with the supplied attributes
    
    Specified by:
    
    findFont in interface Workbook
    
    Returns:
    
    the font with the matched attributes or null
  - getNumberOfFonts
```
public int getNumberOfFonts()
```
    Description copied from interface: Workbook
    
    Get the number of fonts in the font table
    
    Specified by:
    
    getNumberOfFonts in interface Workbook
    
    Returns:
    
    number of fonts (as int since POI 5.0.0)
  - getNumberOfFontsAsInt
```
@Deprecated
 @Removal(version="6.0.0")
public int getNumberOfFontsAsInt()
```
    Deprecated.
    
    Description copied from interface: Workbook
    
    Get the number of fonts in the font table
    
    Specified by:
    
    getNumberOfFontsAsInt in interface Workbook
    
    Returns:
    
    number of fonts
  - getFontAt
```
public Font getFontAt(int idx)
```
    Description copied from interface: Workbook
    
    Get the font at the given index number
    
    Specified by:
    
    getFontAt in interface Workbook
    
    Parameters:
    
    idx - index number (0-based)
    
    Returns:
    
    font at the index
  - createCellStyle
```
public CellStyle createCellStyle()
```
    Create a new Cell style and add it to the workbook's style table
    
    Specified by:
    
    createCellStyle in interface Workbook
    
    Returns:
    
    the new Cell Style object
  - getNumCellStyles
```
public int getNumCellStyles()
```
    Get the number of styles the workbook contains
    
    Specified by:
    
    getNumCellStyles in interface Workbook
    
    Returns:
    
    count of cell styles
  - getCellStyleAt
```
public CellStyle getCellStyleAt(int idx)
```
    Get the cell style object at the given index
    
    Specified by:
    
    getCellStyleAt in interface Workbook
    
    Parameters:
    
    idx - index within the set of styles (0-based)
    
    Returns:
    
    CellStyle object at the index
  - close
```
public void close()
           throws java.io.IOException
```
    Closes the underlying XSSFWorkbook and OPCPackage on which this Workbook is based, if any.
    Once this has been called, no further operations, updates or reads should be performed on the Workbook.
    
    Specified by:
    
    close in interface java.io.Closeable
    
    Specified by:
    
    close in interface java.lang.AutoCloseable
    
    Specified by:
    
    close in interface Workbook
    
    Throws:
    
    java.io.IOException
  - write
```
public void write(java.io.OutputStream stream)
           throws java.io.IOException
```
    Write out this workbook to an OutputStream.
    
    Specified by:
    
    write in interface Workbook
    
    Parameters:
    
    stream - - the java OutputStream you wish to write to
    
    Throws:
    
    java.io.IOException - if anything can't be written.
  - flushSheets
```
protected void flushSheets()
                    throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - dispose
```
public boolean dispose()
```
    Dispose of temporary files backing this workbook on disk. Calling this method will render the workbook unusable.
    
    Returns:
    
    true if all temporary files were deleted successfully.
  - getNumberOfNames
```
public int getNumberOfNames()
```
    Specified by:
    
    getNumberOfNames in interface Workbook
    
    Returns:
    
    the total number of defined names in this workbook
  - getName
```
public Name getName(java.lang.String name)
```
    Specified by:
    
    getName in interface Workbook
    
    Parameters:
    
    name - the name of the defined name
    
    Returns:
    
    the defined name with the specified name. null if not found.
  - getNames
```
public java.util.List<? extends Name> getNames(java.lang.String name)
```
    Returns all defined names with the given name.
    
    Specified by:
    
    getNames in interface Workbook
    
    Parameters:
    
    name - the name of the defined name
    
    Returns:
    
    a list of the defined names with the specified name. An empty list is returned if none is found.
  - getAllNames
```
public java.util.List<? extends Name> getAllNames()
```
    Returns all defined names
    
    Specified by:
    
    getAllNames in interface Workbook
    
    Returns:
    
    all defined names
  - createName
```
public Name createName()
```
    Creates a new (uninitialised) defined name in this workbook
    
    Specified by:
    
    createName in interface Workbook
    
    Returns:
    
    new defined name object
  - removeName
```
public void removeName(Name name)
```
    Remove the given defined name
    
    Specified by:
    
    removeName in interface Workbook
    
    Parameters:
    
    name - the name to remove
  - setPrintArea
```
public void setPrintArea(int sheetIndex,
                         java.lang.String reference)
```
    Sets the printarea for the sheet provided
    i.e. Reference = $A$1:$B$2
    
    Specified by:
    
    setPrintArea in interface Workbook
    
    Parameters:
    
    sheetIndex - Zero-based sheet index (0 Represents the first sheet to keep consistent with java)
    
    reference - Valid name Reference for the Print Area
  - setPrintArea
```
public void setPrintArea(int sheetIndex,
                         int startColumn,
                         int endColumn,
                         int startRow,
                         int endRow)
```
    For the Convenience of Java Programmers maintaining pointers.
    
    Specified by:
    
    setPrintArea in interface Workbook
    
    Parameters:
    
    sheetIndex - Zero-based sheet index (0 = First Sheet)
    
    startColumn - Column to begin printarea
    
    endColumn - Column to end the printarea
    
    startRow - Row to begin the printarea
    
    endRow - Row to end the printarea
    
    See Also:
    
    setPrintArea(int, String)
  - getPrintArea
```
public java.lang.String getPrintArea(int sheetIndex)
```
    Retrieves the reference for the printarea of the specified sheet, the sheet name is appended to the reference even if it was not specified.
    
    Specified by:
    
    getPrintArea in interface Workbook
    
    Parameters:
    
    sheetIndex - Zero-based sheet index (0 Represents the first sheet to keep consistent with java)
    
    Returns:
    
    String Null if no print area has been defined
  - removePrintArea
```
public void removePrintArea(int sheetIndex)
```
    Delete the printarea for the sheet specified
    
    Specified by:
    
    removePrintArea in interface Workbook
    
    Parameters:
    
    sheetIndex - Zero-based sheet index (0 = First Sheet)
  - getMissingCellPolicy
```
public Row.MissingCellPolicy getMissingCellPolicy()
```
    Retrieves the current policy on what to do when getting missing or blank cells from a row.
    The default is to return blank and null cells. Row.MissingCellPolicy
    
    Specified by:
    
    getMissingCellPolicy in interface Workbook
  - setMissingCellPolicy
```
public void setMissingCellPolicy(Row.MissingCellPolicy missingCellPolicy)
```
    Sets the policy on what to do when getting missing or blank cells from a row. This will then apply to all calls to Row.getCell(int). See Row.MissingCellPolicy
    
    Specified by:
    
    setMissingCellPolicy in interface Workbook
  - createDataFormat
```
public DataFormat createDataFormat()
```
    Returns the instance of DataFormat for this workbook.
    
    Specified by:
    
    createDataFormat in interface Workbook
    
    Returns:
    
    the DataFormat object
  - addPicture
```
public int addPicture(byte[] pictureData,
                      int format)
```
    Adds a picture to the workbook.
    
    Specified by:
    
    addPicture in interface Workbook
    
    Parameters:
    
    pictureData - The bytes of the picture
    
    format - The format of the picture.
    
    Returns:
    
    the index to this picture (1 based).
    
    See Also:
    
    Workbook.PICTURE_TYPE_EMF, Workbook.PICTURE_TYPE_WMF, Workbook.PICTURE_TYPE_PICT, Workbook.PICTURE_TYPE_JPEG, Workbook.PICTURE_TYPE_PNG, Workbook.PICTURE_TYPE_DIB
  - getAllPictures
```
public java.util.List<? extends PictureData> getAllPictures()
```
    Gets all pictures from the Workbook.
    
    Specified by:
    
    getAllPictures in interface Workbook
    
    Returns:
    
    the list of pictures (a list of PictureData objects.)
  - getCreationHelper
```
public CreationHelper getCreationHelper()
```
    Returns an object that handles instantiating concrete classes of the various instances one needs for HSSF, XSSF and SXSSF.
    
    Specified by:
    
    getCreationHelper in interface Workbook
  - isDate1904
```
protected boolean isDate1904()
```
  - isHidden
```
@NotImplemented(value="XSSFWorkbook#isHidden is not implemented")
public boolean isHidden()
```
    Specified by:
    
    isHidden in interface Workbook
    
    Returns:
    
    false if this workbook is not visible in the GUI
  - setHidden
```
@NotImplemented(value="XSSFWorkbook#setHidden is not implemented")
public void setHidden(boolean hiddenFlag)
```
    Specified by:
    
    setHidden in interface Workbook
    
    Parameters:
    
    hiddenFlag - pass false to make the workbook visible in the GUI
  - isSheetHidden
```
public boolean isSheetHidden(int sheetIx)
```
    Description copied from interface: Workbook
    
    Check whether a sheet is hidden.
    Note that a sheet could instead be set to be very hidden, which is different (Workbook.isSheetVeryHidden(int))
    
    Specified by:
    
    isSheetHidden in interface Workbook
    
    Parameters:
    
    sheetIx - Number
    
    Returns:
    
    true if sheet is hidden
    
    See Also:
    
    Workbook.getSheetVisibility(int)
  - isSheetVeryHidden
```
public boolean isSheetVeryHidden(int sheetIx)
```
    Description copied from interface: Workbook
    
    Check whether a sheet is very hidden.
    This is different from the normal hidden status (Workbook.isSheetHidden(int))
    
    Specified by:
    
    isSheetVeryHidden in interface Workbook
    
    Parameters:
    
    sheetIx - sheet index to check
    
    Returns:
    
    true if sheet is very hidden
    
    See Also:
    
    Workbook.getSheetVisibility(int)
  - getSheetVisibility
```
public SheetVisibility getSheetVisibility(int sheetIx)
```
    Description copied from interface: Workbook
    
    Get the visibility (visible, hidden, very hidden) of a sheet in this workbook
    
    Specified by:
    
    getSheetVisibility in interface Workbook
    
    Parameters:
    
    sheetIx - the index of the sheet
    
    Returns:
    
    the sheet visibility
  - setSheetHidden
```
public void setSheetHidden(int sheetIx,
                           boolean hidden)
```
    Description copied from interface: Workbook
    
    Hide or unhide a sheet. Please note that the sheet currently set as active sheet (sheet 0 in a newly created workbook or the one set via setActiveSheet()) cannot be hidden.
    
    Specified by:
    
    setSheetHidden in interface Workbook
    
    Parameters:
    
    sheetIx - the sheet index (0-based)
    
    hidden - True to mark the sheet as hidden, false otherwise
    
    See Also:
    
    Workbook.setSheetVisibility(int, SheetVisibility)
  - setSheetVisibility
```
public void setSheetVisibility(int sheetIx,
                               SheetVisibility visibility)
```
    Description copied from interface: Workbook
    
    Hide or unhide a sheet. Please note that the sheet currently set as active sheet (sheet 0 in a newly created workbook or the one set via setActiveSheet()) cannot be hidden.
    
    Specified by:
    
    setSheetVisibility in interface Workbook
    
    Parameters:
    
    sheetIx - the sheet index (0-based)
    
    visibility - the sheet visibility to set
  - linkExternalWorkbook
```
@NotImplemented
public int linkExternalWorkbook(java.lang.String name,
                                                Workbook workbook)
```
    Not implemented for SXSSFWorkbook Adds the LinkTable records required to allow formulas referencing the specified external workbook to be added to this one. Allows formulas such as "[MyOtherWorkbook]Sheet3!$A$5" to be added to the file, for workbooks not already referenced. Note: this is not implemented and thus currently throws an Exception stating this.
    
    Specified by:
    
    linkExternalWorkbook in interface Workbook
    
    Parameters:
    
    name - The name the workbook will be referenced as in formulas
    
    workbook - The open workbook to fetch the link required information from
    
    Throws:
    
    java.lang.RuntimeException - stating that this method is not implemented yet.
  - addToolPack
```
public void addToolPack(UDFFinder toopack)
```
    Register a new toolpack in this workbook.
    
    Specified by:
    
    addToolPack in interface Workbook
    
    Parameters:
    
    toopack - the toolpack to register
  - setForceFormulaRecalculation
```
public void setForceFormulaRecalculation(boolean value)
```
    Whether the application shall perform a full recalculation when the workbook is opened.
    Typically you want to force formula recalculation when you modify cell formulas or values of a workbook previously created by Excel. When set to 0, this flag will tell Excel that it needs to recalculate all formulas in the workbook the next time the file is opened.
    
    Specified by:
    
    setForceFormulaRecalculation in interface Workbook
    
    Parameters:
    
    value - true if the application will perform a full recalculation of workbook values when the workbook is opened
    
    Since:
    
    3.8
  - getForceFormulaRecalculation
```
public boolean getForceFormulaRecalculation()
```
    Whether Excel will be asked to recalculate all formulas when the workbook is opened.
    
    Specified by:
    
    getForceFormulaRecalculation in interface Workbook
  - getSpreadsheetVersion
```
public SpreadsheetVersion getSpreadsheetVersion()
```
    Returns the spreadsheet version (EXCLE2007) of this workbook
    
    Specified by:
    
    getSpreadsheetVersion in interface Workbook
    
    Returns:
    
    EXCEL2007 SpreadsheetVersion enum
    
    Since:
    
    3.14 beta 2
  - addOlePackage
```
public int addOlePackage(byte[] oleData,
                         java.lang.String label,
                         java.lang.String fileName,
                         java.lang.String command)
                  throws java.io.IOException
```
    Description copied from interface: Workbook
    
    Adds an OLE package manager object with the given content to the sheet
    
    Specified by:
    
    addOlePackage in interface Workbook
    
    Parameters:
    
    oleData - the payload
    
    label - the label of the payload
    
    fileName - the original filename
    
    command - the command to open the payload
    
    Returns:
    
    the index of the added ole object, i.e. the storage id
    
    Throws:
    
    java.io.IOException - if the object can't be embedded
  - createEvaluationWorkbook
```
public EvaluationWorkbook createEvaluationWorkbook()
```
    Specified by:
    
    createEvaluationWorkbook in interface Workbook
    
    Returns:
    
    an evaluation workbook

Class SXSSFWorkbook

Nested Class Summary

Field Summary

Fields inherited from interface org.apache.poi.ss.usermodel.Workbook

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.lang.Iterable

Field Detail

DEFAULT_WINDOW_SIZE

_wb

_sharedStringSource

zip64Mode

Constructor Detail

SXSSFWorkbook

SXSSFWorkbook

SXSSFWorkbook

SXSSFWorkbook

SXSSFWorkbook

SXSSFWorkbook

Method Detail

getRandomAccessWindowSize

setRandomAccessWindowSize

setZip64Mode

isCompressTempFiles

setCompressTempFiles

getSharedStringSource

createSheetDataWriter

getSheetFromZipEntryName

injectData

createArchiveOutputStream

createSheetInjector

getXSSFWorkbook

getActiveSheetIndex

setActiveSheet

getFirstVisibleTab

setFirstVisibleTab

setSheetOrder

setSelectedTab

setSheetName

getSheetName

getSheetIndex

getSheetIndex

createSheet

createSheet

cloneSheet

getNumberOfSheets

sheetIterator

iterator

getSheetAt

getSheet

removeSheetAt

createFont

findFont

getNumberOfFonts

getNumberOfFontsAsInt

getFontAt

createCellStyle

getNumCellStyles

getCellStyleAt

close

write

flushSheets

dispose

getNumberOfNames

getName

getNames

getAllNames

createName

removeName

setPrintArea

setPrintArea

getPrintArea

removePrintArea

getMissingCellPolicy

setMissingCellPolicy

createDataFormat

addPicture

getAllPictures

getCreationHelper