Java Code 39 Generator Tutorial

Generate, create barcode Code 39 images in Java Class, JSP Pages, Jasper Report, Eclipse BIRT

Generate, Create, Print, Draw Code 39 barcode in Java projects

• Easy to Generate Code 39 in Java class, Java Bean, Applet, Swing applications
• Create Code 39 in JSP, Java Servlet, EJB, Tomcat, JBoss server side projects
• Print, draw Code 39 barcode images in Jasper Reports, iReport & Eclipse BIRT Java reporting software
• Generating & encoding high quality Code-39 Bar Code images in GIF, JPEG, & EPS formats formats
• Compatible with ISO / IEC 16388 (2nd edition 2007-05-15)
• Completely written in Java source code
• Simple to redistribute Java Code 39 barcode library. No registration key. No activation code
• Mature Code-39 barcode generation Java library

Java Barcode Code 39 Generator Introduction

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• How to Encode Data for Code 39 in Java
• How to Size Code 39 in Java
• How to Adjust Code 39 Image in Java

Java Code 39 Generator - Barcode Code 39 Introduction

Java Code 39 Generator - Barcode Code 39 Introduction

• 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
• Uppercase letters (A - Z)
• - (Dash), $ (Dollar), % (Percentage), (Space), . (Point), / (Slash), + (Plus)
• Code 39 Extension can encodes all 128 ASCII characters

How to Generate Code 39 in Java Class?

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// Build Java Code39 barcode object 
Code39 barcode = new Code39(); 

// Encode Code39 data
barcode.setData("CODE39-IN-JAVA"); 

// Generate Code39 barcode & print into Graphics2D object
barcode.drawBarcode("Java Graphics2D object"); 

// Generate Code39 barcode & encode into GIF format
barcode.drawBarcode("C://barcode-code39.gif"); 

// Generate Code39 barcode & render into JPEG format
barcode.drawBarcode("C://barcode-code39.jpg"); 

// Draw Code39 barcode & paint into EPS image format
barcode.drawBarcode2EPS("C://barcode-Code39.eps"); 

How to Create Code 39 image in HTML or JSP pages?

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1. Under demo package, copy barcode folder and its contents to your tomcat.
2. Start tomcat, navigate to http://YourDomain:Port/barcode/barcode?DATA=0123456789&TYPE=CODE39
3. To create bar code images in html or jsp pages, you can insert an image tag (img) into your page.
4. For example, <img src="http://YourDomain:Port/barcode/barcode?DATA=0123456789&TYPE=CODE39"/>
5. The above Java codes will not produce any Code 39 image files in your server system, using the above methods to draw Code 39 in JSP, html pages.

How to Generate Code 39 Image in Java Servlet Class?

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import com.onbarcode.barcode.AbstractBarcode; 
import com.onbarcode.barcode.Code39; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import javax.servlet.ServletException; 
import javax.servlet.ServletOutputStream; 
   
public class BarcodeServlet extends HttpServlet 
{ 
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException 
    { 
        try { 
            Code39 barcode = new Code39(); 
            barcode.setData("0123456789"); 
                 
            ServletOutputStream servletoutputstream = response.getOutputStream(); 
              
            response.setContentType("image/jpeg"); 
            response.setHeader("Pragma", "no-cache"); 
            response.setHeader("Cache-Control", "no-cache"); 
            response.setDateHeader("Expires", 0); 
           
            // Generate Code-39 barcode & output to ServletOutputStream
            barcode.drawBarcode(servletoutputstream); 
      
        } catch (Exception e) { 
            throw new ServletException(e); 
        } 
    } 
} 

How to Generate & Print Barcode Code 39 Image in Jasper Reports?

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How to Generate & Print Barcode Code 39 Image in iReport?

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How to Generate & Print Barcode Code 39 Image in Eclipse BIRT

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How to Set Generated Barcode Code 39 Image Width and Height?

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1. You can set barcode image width and height through properties barcodeWidth and barcodeHeight values.
2. Or you can set X (bar module width) and Y (bar module height) values

Java Code 39 Generator - Property Settings

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// generate barcode and output to OutputStream object
public boolean drawBarcode(OutputStream outputStream) throws Exception

// generate barcode into a new BufferedImage object
public BufferedImage drawBarcode() throws Exception

/*
    Use this method to generate barcode, and save into gif or jpeg files
    1. to save into gif file, filename ends with ".gif", like "c:\\barcode.gif"
    2. to save into jpeg file, filename ends with ".jpg", like "c:\\barcode.jpg"
    3. to save into png file, filename ends with ".png", like "c:\\barcode.png"
*/
public byte[] drawBarcodeToBytes() throws Exception

public boolean drawBarcode(String imageFile) throws Exception

// Generate barcode and save into EPS file, the filename must ends with ".eps"
public void drawBarcode2EPS(String filename) throws Exception

// Generate barcode on Graphics2D object within certain area
public void drawBarcode(Graphics2D g, Rectangle2D rectangle) throws Exception

Java Barcode Generator Supporting Barcode Symbology Types

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• 1D/ Linear Barcodes:

Codabar	Code 11	Code 2 of 5	Code 39	Code 93
Code 128	EAN 8	EAN 13	GS1 128 (UCC/EAN128)	Identcode
Intelligent Mail(OneCode)	Interleaved 2 of 5	ISBN	ISSN	ITF-14
Leitcode	MSI Plessey	PLANET	POSTNET	RM4SCC
UPC-A	UPC-E

• 2D / Matrix Barcodes: Data Matrix, PDF417, QR Code