Java Code 39 Generator Library SDK Integration & Developer Guide

Generate barcode Code 39 images in Java class, Servlet, JSP, J2EE with complete sample Java source code

• Generate, create Code 39 in Java applications
• Easy to install & integrate barcode Code 39 generation library SDK into Java developments
• Generate over 30 linear, 2d barcode images in Java including Java QR Code, Java Data Matrix, Java PDF-417, Java ITF14, Java Code 128, Java UPC-A
• Generate Code 39 images in Java class, Java Bean, Swing, Applet, J2SE
• Create barcode Code 39 in Java web application, including Servlet, JSP, EJB, Tomcat, JBoss, J2EE
• Create & Print Code 39 barcode in BIRT reports designer and BIRT report runtime
• Generate & Draw Code 39 in Jasper Reports, iReport
• Encode Code 39 images to jpeg, eps, gif, png, tiff, bitmap files in Java program

Code 39, also known as Alpha39, Code 3 of 9, Code 3/9, Type 39, USS Code 39, or USD-3, is the first alpha-numeric linear barcode symbology used world-wide.

Generate and create Code 39 barcode using Java is one of the functions in OnBarcode's Barcode for Java Generating Java library (jar file), which supports generating & printing Code 39 and 20+ other linear & 2D bar codes in Java application and software.

Code 39 Generator and Reader library, SDK & application
Code 39 Generator components and software include Code 39 in .NET, Code 39 in C#, Code 39 in VB.NET, Code 39 in ASP.NET, Code 39 Generator.

This document is providing a detailed Java sample source code about generating Code 39 barcodes in Java class using Java Barcode generation component. Complete Code 39 custmoization settings is included in Java Code 39 generating guide.

Generating Code 39 barcode in Java class example:

	Code39 barcode = new Code39();
	
	/*
	   Code 39 Valid data char set:
	        0, 1, 2, 3, 4, 5, 6, 7, 8, 9 (Digits)
	        A - Z (Uppercase letters)
	        - (Dash), $ (Dollar), % (Percentage), (Space), . (Point), / (Slash), + (Plus)
	
	   Code 39 extension Valid data char set:
	        All ASCII 128 characters
	*/
	// Code 39 encodes upper case chars only, for lower case chars, use Code 39 extension
	barcode.setData("123456789012");
	
	barcode.setExtension(false);
	
	barcode.setAddCheckSum(true);
	
	// Code 39 Wide Narrow bar Ratio
	// Valid value is from 2.0 to 3.0 inclusive.
	barcode.setN(3.0f);
	// The space between 2 characters in code 39; This a multiple of X; The default is 1.;
	// Valid value is from 1.0 (inclusive) to 5.3 (exclusive)
	barcode.setI(1.0f);
	barcode.setShowStartStopInText(true);
	
	// Code 39 Unit of Measure, pixel, cm, or inch
	barcode.setUom(IBarcode.UOM_PIXEL);
	// Code 39 barcode bar module width (X) in pixel
	barcode.setX(1f);
	// Code 39 barcode bar module height (Y) in pixel
	barcode.setY(75f);
	
	// Code 39 image margins
	barcode.setLeftMargin(0f);
	barcode.setRightMargin(0f);
	barcode.setTopMargin(0f);
	barcode.setBottomMargin(0f);
	
	// barcode image resolution in dpi
	barcode.setResolution(72);
	
	// disply barcode encoding data below the barcode
	barcode.setShowText(true);
	// barcode encoding data font style
	barcode.setTextFont(new Font("Arial", 0, 12));
	// space between barcode and barcode encoding data
	barcode.setTextMargin(6);
	
	//  barcode displaying angle
	barcode.setRotate(IBarcode.ROTATE_0);
	
	barcode.drawBarcode("C:\\code39.gif");

Java Barcode Generation Demo Source Codes: