uk.org.okapibarcode:okapibarcode
Advanced tools
An open-source barcode generator written entirely in Java, supporting over 50 encoding standards including all ISO standards.
Okapi Barcode is an open-source barcode generator written entirely in Java, supporting over 50 encoding standards, including all ISO standards. Okapi Barcode is based on Zint, an open-source barcode encoding library developed in C, and builds on the years of work that have been invested in that project.
Okapi Barcode JARs are available for download from Maven Central.
To generate barcode images in your own code using the Okapi Barcode library, use one of the symbology classes linked above:
setContent(String), and thenCode128 barcode = new Code128();
barcode.setFontName("Monospaced");
barcode.setFontSize(16);
barcode.setModuleWidth(2);
barcode.setBarHeight(50);
barcode.setHumanReadableLocation(HumanReadableLocation.BOTTOM);
barcode.setContent("123456789");
int width = barcode.getWidth();
int height = barcode.getHeight();
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_GRAY);
Graphics2D g2d = image.createGraphics();
Java2DRenderer renderer = new Java2DRenderer(g2d, 1, Color.WHITE, Color.BLACK);
renderer.render(barcode);
ImageIO.write(image, "png", new File("code128.png"));
If you'd like to use Okapi Barcode on the Android platform, the easiest approach is to use the
SVG renderer to render your barcode
to SVG, and then use a library like AndroidSVG to
draw the resultant SVG image on an Android Bitmap or Canvas:
Code128 barcode = new Code128();
barcode.setFontName("Monospaced");
barcode.setFontSize(16);
barcode.setModuleWidth(2);
barcode.setBarHeight(50);
barcode.setHumanReadableLocation(HumanReadableLocation.BOTTOM);
barcode.setContent("123456789");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
SvgRenderer renderer = new SvgRenderer(stream, 1, Color.WHITE, Color.BLACK, true);
renderer.render(barcode);
String content = new String(stream.toByteArray(), StandardCharsets.UTF_8);
SVG svg = SVG.getFromString(content);
svg.renderToCanvas(canvas);
To use the Swing GUI, just run the OkapiUI class. The GUI allows you to explore the supported barcode symbologies and test them with different configurations and data.
gradlew check: Compiles and runs all quality checks, including the unit tests.
gradlew fuzz: Runs barcode encoding fuzz tests using Jazzer.
gradlew jar: Builds the JAR file.
gradlew publish: Deploys to Maven Central (requires a modified gradle.properties file).
OkapiInputException and OkapiInternalException, to distinguish user vs. library errorsNullPointerException when channel count not specifiedJava2DRendererHumanReadableAlignment to TextAlignment, move it to graphics package (for Android users)setContent(byte[]) method for binary dataFAQs
An open-source barcode generator written entirely in Java, supporting over 50 encoding standards including all ISO standards.
We found that uk.org.okapibarcode:okapibarcode demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
In this segment of the Risky Business podcast, Feross Aboukhadijeh and Patrick Gray discuss the challenges of tracking malware discovered in open source softare.
Research
Security News
A threat actor's playbook for exploiting the npm ecosystem was exposed on the dark web, detailing how to build a blockchain-powered botnet.
Security News
NVD’s backlog surpasses 20,000 CVEs as analysis slows and NIST announces new system updates to address ongoing delays.