Spire.PDF for Java支持在PDF中创建Codebar、Code11、Code128A、Code128B、Code32、Code39、Code39 Extended 、Code93和Code93 Extended条形码，本教程选择了其中的Codebar、Code128A和Code39进行展示。

import com.spire.pdf.barcode.*;
import com.spire.pdf.graphics.*;
import static com.spire.pdf.graphics.PdfFontStyle.Bold;

import java.awt.*;
import java.awt.geom.Point2D;
import java.util.EnumSet;

public class DrawBarcode {

    public static void main(String[] args) {

        //创建PdfDocument对象
        PdfDocument doc = new PdfDocument();

        //添加一页
        PdfPageBase page = doc.getPages().add();

        //初始化y变量
        double y = 15;

        //创建字体
        PdfFont font= new PdfFont(PdfFontFamily.Helvetica, 12, EnumSet.of(Bold));

        // 绘制文本“Codebar:”到PDF
        PdfTextWidget text = new PdfTextWidget();
        text.setFont(font);
        text.setText("Codebar:");
        PdfLayoutResult result = text.draw(page, 0, y);
        y =(float)(result.getBounds().getY()+ result.getBounds().getHeight() + 2);

        //绘制Codebar条码到PDF
        PdfCodabarBarcode codebar= new PdfCodabarBarcode("00:12-3456/7890");
        codebar.setBarcodeToTextGapHeight(1f);
        codebar.setBarHeight(50f);
        codebar.setEnableCheckDigit(true);
        codebar.setShowCheckDigit(true);
        codebar.setTextDisplayLocation(TextLocation.Bottom);
        PdfRGBColor blue = new PdfRGBColor(Color.blue);
        codebar.setTextColor(blue);
        Point2D.Float point = new Point2D.Float();
        point.setLocation(0,y);
        codebar.draw(page,point);
        y = codebar.getBounds().getY()+ codebar.getBounds().getHeight() + 5;

        //绘制文本“Code128-A:”到PDF
        text.setText("Code128-A:");
        result = text.draw(page, 0, y);
        page = result.getPage();
        y =result.getBounds().getY()+ result.getBounds().getHeight() + 2;

        //绘制Code128A条码到PDF
        PdfCode128ABarcode code128 = new PdfCode128ABarcode("HELLO 00-123");
        code128.setBarcodeToTextGapHeight(1f);
        code128.setBarHeight(50f);
        code128.setTextDisplayLocation(TextLocation.Bottom);
        code128.setTextColor(blue);
        point.setLocation(point.x,y);
        code128.draw(page, point);
        y =code128.getBounds().getY()+ code128.getBounds().getHeight() + 5;

        //绘制文本“Code39”到PDF
        text.setText("Code39:");
        result = text.draw(page, 0, y);
        page = result.getPage();
        y =result.getBounds().getY()+ result.getBounds().getHeight() + 2;

        //绘制Code39条形码到PDF
        PdfCode39Barcode code39 = new PdfCode39Barcode("16-273849");
        code39.setBarcodeToTextGapHeight(1f);
        code39.setBarHeight(50f);
        code39.setTextDisplayLocation(TextLocation.Bottom);
        code39.setTextColor(blue);
        point.setLocation(point.x,y);
        code39.draw(page, point);

        //保存PDF文档
        doc.saveToFile("DrawBarcode.pdf");
    }
}