OpenType (Java Platform SE 8 )

```
public interface OpenType
```
The OpenType interface represents OpenType and TrueType fonts. This interface makes it possible to obtain sfnt tables from the font. A particular Font object can implement this interface.
For more information on TrueType and OpenType fonts, see the OpenType specification. ( http://www.microsoft.com/typography/otspec/ ).

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`TAG_ACNT`	Accent attachment.
`static int`	`TAG_AVAR`	Axis variation.
`static int`	`TAG_BASE`	Baseline data.
`static int`	`TAG_BDAT`	Bitmap data.
`static int`	`TAG_BLOC`	Bitmap location.
`static int`	`TAG_BSLN`	Baseline table.
`static int`	`TAG_CFF`	Compact font format (Type1 font).
`static int`	`TAG_CMAP`	Character to glyph mapping.
`static int`	`TAG_CVAR`	CVT variation.
`static int`	`TAG_CVT`	Control value table.
`static int`	`TAG_DSIG`	Digital signature.
`static int`	`TAG_EBDT`	Embedded bitmap data.
`static int`	`TAG_EBLC`	Embedded bitmap location.
`static int`	`TAG_EBSC`	Embedded bitmap scaling.
`static int`	`TAG_FDSC`	Font descriptors.
`static int`	`TAG_FEAT`	Feature name.
`static int`	`TAG_FMTX`	Font metrics.
`static int`	`TAG_FPGM`	Font program.
`static int`	`TAG_FVAR`	Font variation.
`static int`	`TAG_GASP`	Grid-fitting and scan conversion procedure.
`static int`	`TAG_GDEF`	Glyph definition.
`static int`	`TAG_GLYF`	Glyph data.
`static int`	`TAG_GPOS`	Glyph positioning.
`static int`	`TAG_GSUB`	Glyph substitution.
`static int`	`TAG_GVAR`	Glyph variation.
`static int`	`TAG_HDMX`	Horizontal device metrics.
`static int`	`TAG_HEAD`	Font header.
`static int`	`TAG_HHEA`	Horizontal metrics header.
`static int`	`TAG_HMTX`	Horizontal metrics.
`static int`	`TAG_JSTF`	Justification.
`static int`	`TAG_JUST`	Justification.
`static int`	`TAG_KERN`	Kerning.
`static int`	`TAG_LCAR`	Ligature caret.
`static int`	`TAG_LOCA`	Index to location.
`static int`	`TAG_LTSH`	Linear threshold.
`static int`	`TAG_MAXP`	Maximum profile.
`static int`	`TAG_MMFX`	Multiple master font metrics.
`static int`	`TAG_MMSD`	Multiple master supplementary data.
`static int`	`TAG_MORT`	Glyph metamorphosis.
`static int`	`TAG_NAME`	Naming table.
`static int`	`TAG_OPBD`	Optical bounds.
`static int`	`TAG_OS2`	OS/2 and Windows specific metrics.
`static int`	`TAG_PCLT`	PCL 5 data.
`static int`	`TAG_POST`	PostScript Information.
`static int`	`TAG_PREP`	CVT preprogram.
`static int`	`TAG_PROP`	Glyph properties.
`static int`	`TAG_TRAK`	Tracking.
`static int`	`TAG_TYP1`	Adobe Type 1 font data.
`static int`	`TAG_VDMX`	Vertical device metrics.
`static int`	`TAG_VHEA`	Vertical metrics header.
`static int`	`TAG_VMTX`	Vertical metrics.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`byte[]`	`getFontTable(int sfntTag)`	Returns the table as an array of bytes for a specified tag.
`byte[]`	`getFontTable(int sfntTag, int offset, int count)`	Returns a subset of the table as an array of bytes for a specified tag.
`byte[]`	`getFontTable(String strSfntTag)`	Returns the table as an array of bytes for a specified tag.
`byte[]`	`getFontTable(String strSfntTag, int offset, int count)`	Returns a subset of the table as an array of bytes for a specified tag.
`int`	`getFontTableSize(int sfntTag)`	Returns the size of the table for a specified tag.
`int`	`getFontTableSize(String strSfntTag)`	Returns the size of the table for a specified tag.
`int`	`getVersion()`	Returns the version of the `OpenType` font.

- Field Detail
  - TAG_CMAP
```
static final int TAG_CMAP
```
    Character to glyph mapping. Table tag "cmap" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_HEAD
```
static final int TAG_HEAD
```
    Font header. Table tag "head" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_NAME
```
static final int TAG_NAME
```
    Naming table. Table tag "name" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_GLYF
```
static final int TAG_GLYF
```
    Glyph data. Table tag "glyf" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_MAXP
```
static final int TAG_MAXP
```
    Maximum profile. Table tag "maxp" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_PREP
```
static final int TAG_PREP
```
    CVT preprogram. Table tag "prep" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_HMTX
```
static final int TAG_HMTX
```
    Horizontal metrics. Table tag "hmtx" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_KERN
```
static final int TAG_KERN
```
    Kerning. Table tag "kern" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_HDMX
```
static final int TAG_HDMX
```
    Horizontal device metrics. Table tag "hdmx" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_LOCA
```
static final int TAG_LOCA
```
    Index to location. Table tag "loca" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_POST
```
static final int TAG_POST
```
    PostScript Information. Table tag "post" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_OS2
```
static final int TAG_OS2
```
    OS/2 and Windows specific metrics. Table tag "OS/2" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_CVT
```
static final int TAG_CVT
```
    Control value table. Table tag "cvt " in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_GASP
```
static final int TAG_GASP
```
    Grid-fitting and scan conversion procedure. Table tag "gasp" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_VDMX
```
static final int TAG_VDMX
```
    Vertical device metrics. Table tag "VDMX" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_VMTX
```
static final int TAG_VMTX
```
    Vertical metrics. Table tag "vmtx" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_VHEA
```
static final int TAG_VHEA
```
    Vertical metrics header. Table tag "vhea" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_HHEA
```
static final int TAG_HHEA
```
    Horizontal metrics header. Table tag "hhea" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_TYP1
```
static final int TAG_TYP1
```
    Adobe Type 1 font data. Table tag "typ1" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_BSLN
```
static final int TAG_BSLN
```
    Baseline table. Table tag "bsln" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_GSUB
```
static final int TAG_GSUB
```
    Glyph substitution. Table tag "GSUB" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_DSIG
```
static final int TAG_DSIG
```
    Digital signature. Table tag "DSIG" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_FPGM
```
static final int TAG_FPGM
```
    Font program. Table tag "fpgm" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_FVAR
```
static final int TAG_FVAR
```
    Font variation. Table tag "fvar" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_GVAR
```
static final int TAG_GVAR
```
    Glyph variation. Table tag "gvar" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_CFF
```
static final int TAG_CFF
```
    Compact font format (Type1 font). Table tag "CFF " in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_MMSD
```
static final int TAG_MMSD
```
    Multiple master supplementary data. Table tag "MMSD" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_MMFX
```
static final int TAG_MMFX
```
    Multiple master font metrics. Table tag "MMFX" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_BASE
```
static final int TAG_BASE
```
    Baseline data. Table tag "BASE" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_GDEF
```
static final int TAG_GDEF
```
    Glyph definition. Table tag "GDEF" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_GPOS
```
static final int TAG_GPOS
```
    Glyph positioning. Table tag "GPOS" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_JSTF
```
static final int TAG_JSTF
```
    Justification. Table tag "JSTF" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_EBDT
```
static final int TAG_EBDT
```
    Embedded bitmap data. Table tag "EBDT" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_EBLC
```
static final int TAG_EBLC
```
    Embedded bitmap location. Table tag "EBLC" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_EBSC
```
static final int TAG_EBSC
```
    Embedded bitmap scaling. Table tag "EBSC" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_LTSH
```
static final int TAG_LTSH
```
    Linear threshold. Table tag "LTSH" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_PCLT
```
static final int TAG_PCLT
```
    PCL 5 data. Table tag "PCLT" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_ACNT
```
static final int TAG_ACNT
```
    Accent attachment. Table tag "acnt" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_AVAR
```
static final int TAG_AVAR
```
    Axis variation. Table tag "avar" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_BDAT
```
static final int TAG_BDAT
```
    Bitmap data. Table tag "bdat" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_BLOC
```
static final int TAG_BLOC
```
    Bitmap location. Table tag "bloc" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_CVAR
```
static final int TAG_CVAR
```
    CVT variation. Table tag "cvar" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_FEAT
```
static final int TAG_FEAT
```
    Feature name. Table tag "feat" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_FDSC
```
static final int TAG_FDSC
```
    Font descriptors. Table tag "fdsc" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_FMTX
```
static final int TAG_FMTX
```
    Font metrics. Table tag "fmtx" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_JUST
```
static final int TAG_JUST
```
    Justification. Table tag "just" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_LCAR
```
static final int TAG_LCAR
```
    Ligature caret. Table tag "lcar" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_MORT
```
static final int TAG_MORT
```
    Glyph metamorphosis. Table tag "mort" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_OPBD
```
static final int TAG_OPBD
```
    Optical bounds. Table tag "opbd" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_PROP
```
static final int TAG_PROP
```
    Glyph properties. Table tag "prop" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
  - TAG_TRAK
```
static final int TAG_TRAK
```
    Tracking. Table tag "trak" in the Open Type Specification.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - getVersion
```
int getVersion()
```
    Returns the version of the OpenType font. 1.0 is represented as 0x00010000.
    
    Returns:
    
    the version of the OpenType font.
  - getFontTable
```
byte[] getFontTable(int sfntTag)
```
    Returns the table as an array of bytes for a specified tag. Tags for sfnt tables include items like cmap, name and head. The byte array returned is a copy of the font data in memory.
    
    Parameters:
    
    sfntTag - a four-character code as a 32-bit integer
    
    Returns:
    
    a byte array that is the table that contains the font data corresponding to the specified tag.
  - getFontTable
```
byte[] getFontTable(String strSfntTag)
```
    Returns the table as an array of bytes for a specified tag. Tags for sfnt tables include items like cmap, name and head. The byte array returned is a copy of the font data in memory.
    
    Parameters:
    
    strSfntTag - a four-character code as a String
    
    Returns:
    
    a byte array that is the table that contains the font data corresponding to the specified tag.
  - getFontTable
```
byte[] getFontTable(int sfntTag,
                    int offset,
                    int count)
```
    Returns a subset of the table as an array of bytes for a specified tag. Tags for sfnt tables include items like cmap, name and head. The byte array returned is a copy of the font data in memory.
    
    Parameters:
    
    sfntTag - a four-character code as a 32-bit integer
    
    offset - index of first byte to return from table
    
    count - number of bytes to return from table
    
    Returns:
    
    a subset of the table corresponding to sfntTag and containing the bytes starting at offset byte and including count bytes.
  - getFontTable
```
byte[] getFontTable(String strSfntTag,
                    int offset,
                    int count)
```
    Returns a subset of the table as an array of bytes for a specified tag. Tags for sfnt tables include items like cmap, name and head. The byte array returned is a copy of the font data in memory.
    
    Parameters:
    
    strSfntTag - a four-character code as a String
    
    offset - index of first byte to return from table
    
    count - number of bytes to return from table
    
    Returns:
    
    a subset of the table corresponding to strSfntTag and containing the bytes starting at offset byte and including count bytes.
  - getFontTableSize
```
int getFontTableSize(int sfntTag)
```
    Returns the size of the table for a specified tag. Tags for sfnt tables include items like cmap, name and head.
    
    Parameters:
    
    sfntTag - a four-character code as a 32-bit integer
    
    Returns:
    
    the size of the table corresponding to the specified tag.
  - getFontTableSize
```
int getFontTableSize(String strSfntTag)
```
    Returns the size of the table for a specified tag. Tags for sfnt tables include items like cmap, name and head.
    
    Parameters:
    
    strSfntTag - a four-character code as a String
    
    Returns:
    
    the size of the table corresponding to the specified tag.

Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2025, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.

Interface OpenType

Field Summary

Method Summary

Field Detail

TAG_CMAP

TAG_HEAD

TAG_NAME

TAG_GLYF

TAG_MAXP

TAG_PREP

TAG_HMTX

TAG_KERN

TAG_HDMX

TAG_LOCA

TAG_POST

TAG_OS2

TAG_CVT

TAG_GASP

TAG_VDMX

TAG_VMTX

TAG_VHEA

TAG_HHEA

TAG_TYP1

TAG_BSLN

TAG_GSUB

TAG_DSIG

TAG_FPGM

TAG_FVAR

TAG_GVAR

TAG_CFF

TAG_MMSD

TAG_MMFX

TAG_BASE

TAG_GDEF

TAG_GPOS

TAG_JSTF

TAG_EBDT

TAG_EBLC

TAG_EBSC

TAG_LTSH

TAG_PCLT

TAG_ACNT

TAG_AVAR

TAG_BDAT

TAG_BLOC

TAG_CVAR

TAG_FEAT

TAG_FDSC

TAG_FMTX

TAG_JUST

TAG_LCAR

TAG_MORT

TAG_OPBD

TAG_PROP

TAG_TRAK

Method Detail

getVersion

getFontTable

getFontTable

getFontTable

getFontTable

getFontTableSize

getFontTableSize