Barcode39

java.lang.Object
- com.itextpdf.barcodes.Barcode1D
- - com.itextpdf.barcodes.Barcode39

```
public class Barcode39
extends Barcode1D
```
This class represents the barcode Code 39.
Code 39 is a variable length, discrete barcode symbology defined in ISO/IEC 16388:2007.
The Code 39 specification defines 43 characters, consisting of uppercase letters (A through Z), numeric digits (0 through 9) and a number of special characters (-, ., $, /, +, %, and space). An additional character (denoted '*') is used for both start and stop delimiters. Each character is composed of nine elements: five bars and four spaces.

Field Summary

Fields
Modifier and Type	Field	Description
`private static byte[][]`	`BARS`	The bars to generate the code.
`private static java.lang.String`	`CHARS`	The index chars to `BARS`, symbol * use only start and stop characters, the * character will not appear in the input data.
`private static java.lang.String`	`EXTENDED`	The character combinations to make the code 39 extended.

Fields inherited from class com.itextpdf.barcodes.Barcode1D
ALIGN_CENTER, ALIGN_LEFT, ALIGN_RIGHT, altText, barHeight, baseline, checksumText, code, codeType, DEFAULT_BAR_BACKGROUND_COLOR, DEFAULT_BAR_FOREGROUND_COLOR, document, extended, font, generateChecksum, guardBars, inkSpreading, n, size, startStopText, textAlignment, x

Constructor Summary

Constructors
Constructor Description

Barcode39(PdfDocument document)
Creates a new Barcode39.

Barcode39(PdfDocument document, PdfFont font)
Creates a new Barcode39.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.awt.Image`	`createAwtImage(java.awt.Color foreground, java.awt.Color background)`	Creates a `java.awt.Image`.
`Rectangle`	`getBarcodeSize()`	Gets the maximum area that the barcode and the text, if any, will occupy.
`static byte[]`	`getBarsCode39(java.lang.String text)`	Creates the bars.
`(package private) static char`	`getChecksum(java.lang.String text)`	Calculates the checksum.
`static java.lang.String`	`getCode39Ex(java.lang.String text)`	Converts the extended text into a normal, escaped text, ready to generate bars.
`Rectangle`	`placeBarcode(PdfCanvas canvas, Color barColor, Color textColor)`	Places the barcode in a `PdfCanvas`.

Methods inherited from class com.itextpdf.barcodes.Barcode1D
createFormXObject, createFormXObject, fitWidth, getAltText, getBarHeight, getBaseline, getCode, getCodeType, getDescender, getFont, getInkSpreading, getN, getSize, getTextAlignment, getX, isChecksumText, isExtended, isGenerateChecksum, isGuardBars, isStartStopText, setAltText, setBarHeight, setBaseline, setChecksumText, setCode, setCodeType, setExtended, setFont, setGenerateChecksum, setGuardBars, setInkSpreading, setN, setSize, setStartStopText, setTextAlignment, setX

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

Field Detail
- BARS
```
private static final byte[][] BARS
```
  The bars to generate the code.
- CHARS
```
private static final java.lang.String CHARS
```
  The index chars to BARS, symbol * use only start and stop characters, the * character will not appear in the input data.
  
  See Also:
  
  Constant Field Values
- EXTENDED
```
private static final java.lang.String EXTENDED
```
  The character combinations to make the code 39 extended.
  
  See Also:
  
  Constant Field Values

Constructor Detail
- Barcode39
```
public Barcode39(PdfDocument document)
```
  Creates a new Barcode39. To generate the font the PdfDocument.getDefaultFont() will be implicitly called. If you want to use this barcode in PDF/A documents, please consider using Barcode39(PdfDocument, PdfFont).
  
  Parameters:
  
  document - The document to which the barcode will be added
- Barcode39
```
public Barcode39(PdfDocument document,
                 PdfFont font)
```
  Creates a new Barcode39.
  
  Parameters:
  
  document - The document to which the barcode will be added
  
  font - The font to use

Method Detail

getBarsCode39
```
public static byte[] getBarsCode39(java.lang.String text)
```
Creates the bars.

Parameters:

text - the text to create the bars. This text does not include the start and stop characters

Returns:

the bars

getCode39Ex
```
public static java.lang.String getCode39Ex(java.lang.String text)
```
Converts the extended text into a normal, escaped text, ready to generate bars.

Parameters:

text - the extended text

Returns:

the escaped text

getChecksum
```
static char getChecksum(java.lang.String text)
```
Calculates the checksum.

Parameters:

text - the text

Returns:

the checksum

getBarcodeSize
```
public Rectangle getBarcodeSize()
```
Gets the maximum area that the barcode and the text, if any, will occupy. The lower left corner is always (0, 0).

Specified by:

getBarcodeSize in class Barcode1D

Returns:

the size the barcode occupies.

placeBarcode

public Rectangle placeBarcode(PdfCanvas canvas,
                              Color barColor,
                              Color textColor)

Places the barcode in a PdfCanvas. The barcode is always placed at coordinates (0, 0). Use the translation matrix to move it elsewhere.

The bars and text are written in the following colors:

`barColor`	`textColor`	Result
`null`	`null`	bars and text painted with current fill color
`barColor`	`null`	bars and text painted with `barColor`
`null`	`textColor`	bars painted with current color text painted with `textColor`
`barColor`	`textColor`	bars painted with `barColor` text painted with `textColor`

Specified by:: placeBarcode in class Barcode1D
Parameters:: canvas - the PdfCanvas where the barcode will be placed; barColor - the color of the bars. It can be null; textColor - the color of the text. It can be null
Returns:: the dimensions the barcode occupies

createAwtImage
```
public java.awt.Image createAwtImage(java.awt.Color foreground,
                                     java.awt.Color background)
```
Creates a java.awt.Image. This image only contains the bars without any text.

Specified by:

createAwtImage in class Barcode1D

Parameters:

foreground - the color of the bars

background - the color of the background

Returns:

the image