Generate Barcodes Dynamically Using JAVA

1. package BARCODE;
   import java.awt.image.BufferedImage;
   import java.io.ByteArrayOutputStream;
   import java.io.FileOutputStream;
   import org.krysalis.barcode4j.impl.code128.Code128Bean;
   import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
   public class Barcode_Image {
   	public static void main(String[] args) {
   		Barcode_Image.createImage("chillyfacts.png", "999999999");
   		System.out.println("finished");
   	}
   	public static void createImage(String image_name,String myString)  {
   		try {
   		Code128Bean code128 = new Code128Bean();
   		code128.setHeight(15f);
   		code128.setModuleWidth(0.3);
   		code128.setQuietZone(10);
   		code128.doQuietZone(true);
   		ByteArrayOutputStream baos = new ByteArrayOutputStream();
   		BitmapCanvasProvider canvas = new BitmapCanvasProvider(baos, "image/x-png", 300, BufferedImage.TYPE_BYTE_BINARY, false, 0);
   		code128.generateBarcode(canvas, myString);
   		canvas.finish();
   		//write to png file
   		FileOutputStream fos = new FileOutputStream("C:\\Users\\MIRITPC\\Desktop\\jas\\New folder\\"+image_name);
   		fos.write(baos.toByteArray());
   		fos.flush();
   		fos.close();
   		} catch (Exception e) {
   			// TODO: handle exception
   		}
   	}
   }
   
   
   

2. Barcode_PDF.java

   
   package BARCODE;
   import java.io.FileOutputStream;
   import com.itextpdf.text.Document;
   import com.itextpdf.text.DocumentException;
   import com.itextpdf.text.Image;
   import com.itextpdf.text.PageSize;
   import com.itextpdf.text.pdf.Barcode128;
   import com.itextpdf.text.pdf.BarcodeEAN;
   import com.itextpdf.text.pdf.PdfContentByte;
   import com.itextpdf.text.pdf.PdfWriter;
   public class Barcode_PDF {
   	public static void main(String[] args) {
   		Barcode_PDF.createPDF("honeyvig.pdf","honeyvig");
   	}
   	public static void createPDF(String pdfFilename,String myString) {
   	    Document doc = new Document();
   	    PdfWriter docWriter = null;
   	    try {
   	        docWriter = PdfWriter.getInstance(doc, new FileOutputStream("C:\\Users\\MIRITPC\\Desktop\\jas\\New folder\\"+pdfFilename));
   	        doc.addAuthor("honeyvig");
   	        doc.addCreationDate();
   	        doc.addProducer();
   	        doc.addCreator("honeyvig.com");
   	        doc.addTitle("honeyvig Barcode test");
   	        doc.setPageSize(PageSize.LETTER);
   	        doc.open();
   	        PdfContentByte cb = docWriter.getDirectContent();
   
   	        Barcode128 code128 = new Barcode128();
   	        code128.setCode(myString.trim());
   	        code128.setCodeType(Barcode128.CODE128);
   	        Image code128Image = code128.createImageWithBarcode(cb, null, null);
   	        code128Image.setAbsolutePosition(10, 700);
   	        code128Image.scalePercent(125);
   	        doc.add(code128Image);
   
   	        BarcodeEAN codeEAN = new BarcodeEAN();
   	        codeEAN.setCode(myString.trim());
   	        codeEAN.setCodeType(BarcodeEAN.EAN13);      
   	        Image codeEANImage = code128.createImageWithBarcode(cb, null, null);
   	        codeEANImage.setAbsolutePosition(10, 600);
   	        codeEANImage.scalePercent(125);
   	        doc.add(codeEANImage);
   	    } catch (DocumentException dex) {
   	        dex.printStackTrace();
   	    } catch (Exception ex) {
   	        ex.printStackTrace();
   	    } finally {
   	        if (doc != null) {
   	            doc.close();
   	        }
   	        if (docWriter != null) {
   	            docWriter.close();
   	        }
   	    }
   	}
   }
   
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3. The above code will generate .png as below,

4. To create the Barcodes dynamically from MySQL database you can use below class,
   DBConnection.java

   
   package com.chillyfacts.com;
   import java.sql.Connection;
   import java.sql.DriverManager; 
   public class DBConnection {        
   	public Connection getConnection(){          
   		Connection connection=null;                      
   		System.out.println("Connection called");                  
   		try {                                                                  
   			Class.forName("com.mysql.jdbc.Driver");              
   		connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/jsp_crud","root", "root");
   		} catch (ClassNotFoundException e) {
   			e.printStackTrace();
   		} catch (Exception e) {
   			e.printStackTrace();
   		}
   		return connection;
   	}
   }
   
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   Generate_Dynamic_Bar_Code.java

   
   package com.chillyfacts.com;
   import java.sql.Connection;
   import java.sql.PreparedStatement;
   import java.sql.ResultSet;
   import BARCODE.Barcode_Image;
   import BARCODE.Barcode_PDF;
   public class Generate_Dynamic_Bar_Code {
   	public static void main(String[] args) {
   		 	PreparedStatement ps=null;
   			Connection connection=null;
   			DBConnection obj_DBConnection=new DBConnection();
   			connection=obj_DBConnection.getConnection();
   			ResultSet rs=null;
   		try { 
   			String query="select * from user";
   			ps = connection.prepareStatement(query);
   			rs=ps.executeQuery();
   			while(rs.next()){
   				Barcode_Image.createImage(rs.getString("mobile")+".png", rs.getString("mobile"));
   				Barcode_PDF.createPDF(rs.getString("mobile")+".pdf", rs.getString("mobile"));
   				System.out.println("Creating Barcode for "+rs.getString("mobile"));
   			}
   		}catch(Exception e){
   			e.printStackTrace();
   		}finally{
   			if(connection!=null){
   				try {
   						connection.close();
   					}
   				 catch (Exception e2) {
   					e2.printStackTrace();
   				}
   			}
   			if(ps!=null){
   				try {
   					ps.close();
   					}
   				 catch (Exception e2) {
   					 e2.printStackTrace();
   				}
   			}
   		}
   		}	
   }