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In this iText tutorial, I am writing various code examples read a pdf file and generate PDF file. IText library helps to generate pdf files from java applications dynamically. These code examples are categorized into multiple sections based on the work they do OR functionality they achieve. Converting HTML to PDF. When converting HTML with css to pdf people often encounter to a problems, wether is the font rendering, css-float, positioning elements to problems with memory on server side. How to create PDF file on C# or may be you know some. Creating pdf file in C# PDF File Writer C# Class Library Create Simple PDF File using C# How to create PDF document in ASP.NET with C#. 3 Steps for Generating HTML to PDF PDFelement is a professional and efficient tool to convert HTML pages to PDF file format. After conversion from HTML to PDF, users could edit the generated PDF file by changing its font size, font, and colour.
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By Lokesh Gupta | Filed Under: Java LibrariesIn this iText tutorial, I am writing various code examples read a pdf file and generate PDF file. iText library helps to generate pdf files from java applications dynamically.
These code examples are categorized into multiple sections based on the work they do OR functionality they achieve. With each java pdf example, I have attached a snapshot of PDF file so that you can visualize what exactly code is writing in PDF file. You may extend these examples to get text from database or some API response in json and write to pdf.
I have tried to put as many examples as I found useful to put here to help you all while you work on pdf files in Java. Through given examples use simple java programs, you can reuse this code in web applications.
Download Sourcecode of iText ExamplesLet’s start the tutorial with an introduction to iText library.
1. Overview of iText library
On brighter side, iText is an open source API. Note that though iText is open source, you still need to purchase a commercial license if you want to use it for commercial purposes. iText is a freely available Java library from http://itextpdf.com. The iText library is powerful and supports the generation of HTML, RTF, and XML documents, in addition to generating PDFs. You can choose from a variety of fonts to be used in the document. Also, the structure of iText allows you to generate any of the above-mentioned types of documents with the same code. Isn’t it great feature, right?
The iText library contains classes to generate PDF text in various fonts, generate tables in PDF document, add watermarks to pages, and so on. There are many more features available with iText which I will leave on you to explore.
To add iText into your application, include following maven repository into your pom.xml file.
Or you can download the latest jar files from maven repository.
2. Commonly used iText classes
Let’s list down and get familiar with important classes which we are going to use in this application.
- com.itextpdf.text.Document : This is the most important class in iText library and represent PDF document instance. If you need to generate a PDF document from scratch, you will use the Document class. First you must create a Document instance. Then you must open it. After that you add content to the document. Finally you close the Document instance.
- com.itextpdf.text.Paragraph : This class represents a indented “paragraph” of text. In a paragraph you can set the paragraph alignment, indentation and spacing before and after the paragraph.
- com.itextpdf.text.Chapter : This class represents a chapter in the PDF document. It is created using a Paragraph as title and an int as chapter number.
- com.itextpdf.text.Font : This class contains all specifications of a font, such as family of font, size, style, and color. Various fonts are declared as static constants in this class.
- com.itextpdf.text.List : This class represents a list, which, in turn, contains a number of ListItems.
- com.itextpdf.text.pdf.PDFPTable : This is a table that can be put at an absolute position but can also be added to the document as the class Table.
- com.itextpdf.text.Anchor : An Anchor can be a reference or a destination of a reference. A link like we have in HTML pages.
- com.itextpdf.text.pdf.PdfWriter : When this PdfWriter is added to a certain PdfDocument, the PDF representation of every Element added to this Document will be written to the outputstream attached to writer (file or network).
- com.itextpdf.text.pdf.PdfReader : Used to read a PDF document. Simple and clear.
2. iText hello world example
Let’s start writing our example codes with customary Hello World application. In this application, I will create a PDF file with a single statement in content.
4. Set file attributes to PDF file
This example shows how to set various attributes like author name, created date, creator name or simply title of the pdf file.
5. Add images to PDF file
An example to show how images can be added to PDF files. Example contain adding images from file system as well as URLs. Also, I have added code to position the images within document.
6. Generate tables in PDFs
Below example shows how to add tables in a pdf document.
7. Create list items in PDF file
Below example will help you in understanding that how to write lists in pdf files using iText library.
8. Generate PDF and style / format PDF file content
Let’s see some examples of styling the content of PDF file. Example contains the usage of Fonts as well as chapter and sections as well.
9. Generate password protected PDF file
Let’s see an example of creating password protected pdf file. Here
We need to add bouncy castle jars generating for password protected PDFs. I have added these jars in sourcecode of examples for this post.writer.setEncryption()
is used to set password to generated PDF.10. Create PDF with limited permissions
In this example, I am setting few file permissions for a pdf file to limit access for other users. Following are several permission values:
You can provide multiple permissions by ORing different values. For example PdfWriter.ALLOW_PRINTING | PdfWriter.ALLOW_COPY.
11. Read and modify an existing PDF file
To complete this tutorial, let’s see an example of reading and modifying a PDF file using PDFReader class provided by iText library itself. In this example, I will read content from PDF file and add some random content to it’s all pages.
12. Write PDF as Output Stream in HTTP response
This is the last example in list and in this example, I am writing the content of created PDF file into output stream attached to HttpServletResponse object. This will be needed when you want to stream the PDF file in a client-server environment.
That’s all for this big list of iText example codes. Leave a comment if something is not clear to you OR you would like to add any other example into this list.
Download Sourcecode of iText ExamplesHappy Learning !!
Learn how to generate PDF output in RoboHelp. PDFs are great for printing and saving locally for offline use.
Generating PDF output helps you distribute your project output to millions of users. Adobe PDF or Portable Document Format is a universal file format for viewing, sharing, and printing content. PDFs preserve fonts, images, and layout of content created with different applications and platforms. They are compact, easy to navigate with links, and effective in printing workflows.
Note:
You require Adobe Reader software to view PDF files.
The first step in generating the output of a RoboHelp project is to create an output preset and then configure the various settings of the output preset. You can use the following settings to configure a PDF output preset:
Use the following options to specify basic output settings, such as title, output path, language of UI strings, and more.
Title Specify the title for the generated output. This is part of the metadata.
You can use variables in the title. To do so, type { and select a variable from the drop-down list, and then press Enter. Note that if you have provided a variable set in the Content tab > Variable Set field, during output generation, the value of the selected variable is picked from the variable set.
The title, along with the variables if used, appears on the browser tab of the output.
Output Path Specify a location for the output. To select a location, click .
Ensure that the output path is NOT located inside the project folder. If the output path is inside the project folder, the output generation fails. Also the folder you select should NOT have any content that you need. RoboHelp deletes the contents of the folder before generating the output.
PDF File Specify the name and extension (.pdf) of the output file to be generated. For example, specify Printed_Documentation.pdf.
Language Use the drop-down list to specify a language for the titles of Index, Glossary, and Table of Contents in your output. Specify this setting if you want to change the language specified in project settings.
Post Generation Script To run your custom script after output generation, select the script .js file from the drop-down list. The .js files displayed in the list are from the Scripting folder of your RoboHelp app data.
Use the following options to specify content-related output settings, such as the settings for Table of Contents, index, glossary, and condition expression.
Table Of Contents Use the drop-down list to select the required Table of Contents in your project. Only the topics that are in the selected Table of Contents are displayed in the output.
Show Table Of Contents Includes the Table of Contents page in your PDF output. Deselect this field to exclude the Table of Contents page from your output.
Include All Referenced Topics Includes topics that are not part of the Table of Contents but are referenced from topics in the Table of Contents. Select this field to exclude referenced topics from the PDF. In both cases, RoboHelp removes the hyperlinks to referenced topics from the PDF output.
Cover Page Click to select the file that first appears when you view the output.
Include Index Select this setting to include the index in the output.
Glossary Use the drop-down list to select the glossary to be included in the output. The glossary helps your users to easily access relevant terms in your project, with the corresponding definitions.
Condition Expression Use the drop-down list to specify the condition expression for your output. This setting allows you to easily include or exclude content depending on the desired type of output or userbase. Click to edit the selected condition expression. You can also select None in the drop-down list to not specify a condition expression.
Variable Set Use the drop-down list to specify the variable set to use in this output. In the drop-down list, you can select <Default Variable Set> to use the project's default variable set. Variable sets allow you to implement output-specific use of variables. For example, you can have different variable sets for generating output for customers and internal users.
Use the following options to specify details of appearance in your output.
Master Page Use the drop-down list to select the master page for the output you are generating.
Specify separate headers and footers Select this option to specify master pages to assign different headers and footers for Topics, TOC, Index, and Glossary page types in your output.
Each of the Topics, TOC, Index, and Glossary page types can have the following header and footer settings:
- First Page Specify a master page for the first page.
- Apply to all <component> pages Select this option to apply the master page chosen for the first page to even and odd pages.
- Even Pages Specify a master page for the even pages.
- Odd Pages Specify a master page for the odd pages.
- Apply to all sections (Available only in Topics drop-down section) Click to apply the settings in the Topics drop-down section to all drop-down sections in the output--TOC, Index, and Glossary.
Programme paint windows xp. Note:
If you do not select the Specify separate headers and footers field, common header and footer settings from the master page selected in the Master Page field are applied to all pages (Topics, TOC, Index, and Glossary) in your output.
Use the following options to specify the page size, TOC depth, and page margin settings.
Page Size Use the drop-down list to select a desired page size for your output. You can choose from options such as A4, A3, Letter, and more. You can also select Custom to specify your own page width (in mm) and page height (in mm).
Page Margin Specify the desired page margin in mm. You can specify the page margin for specific sides using the following icons:
Specify the top page margin.
Specify the bottom page margin.
Specify the left page margin.
Specify the right page margin.
To have equal page margins on all sides of the page, click .
Header Bottom Margin Specify margins (in milimeters) to control the spacing between the header and the body content in the output.
Footer Top Margin Specify margins (in milimeters) to control the spacing between the body content and the footer in the output.
Test Pdf Document
You can publish your output to RoboHelp Server, SharePoint Online, FTP, SFTP, or File System. To be able to publish your output, first configure a publish profile for the appropriate server type. For more information, see the following sections:
- Configure a publish profile for RoboHelp Server and SharePoint Online (Applies only to Responsive HTML5 and Frameless output presets)
After you save the publish profile, RoboHelp displays the profile in the Publish tab. To publish your output, select the appropriate publish profiles and click .
By default, only modified files are published using the chosen publish profiles since the last publish.
To publish all files, select Republish All and click . To view the publish log, in the Output Presets panel, against the appropriate output preset, choose > View Publish Log.
- In the authoring window of your project, click the Quick Generate icon in the upper-right corner of the standard toolbar.
- Select a PDF output preset in the Quick Generate dialog box.Has been since Visual Basic (YUCK! Microsoft qbasic 4.5 free download for windows 7. I'm more of a C#/C/C/Java programmer) came out.You CAN download QBasic for DOS V1.1 from Microsoft at:Just extract it into a directory and then CD into it and type QBasic and there's the old QBasic IDE in all it's glory.Now, you CAN get free versions of the.NET developer tools. QBasic is dead.
- To configure the settings, do one of the following:
- Click the Edit Settings icon in the Quick Generate dialog box.
- Click the Output tab at the left side of the Standard toolbar.
The Output view opens. - In the Output toolbar, click Output Presets. In the Output Presets panel, do one of the following:
- Double-click the desired PDF output preset.
- Click the icon next to the desired output preset and select Edit.
- See Configure a PDF output preset to configure the output settings.
- To save your settings, click the Save icon in the upper-left corner of the standard toolbar in the Output view.
- Click the Generate Preset icon in the Output Presets panel.You can then view a progress bar next to the selected output preset in the Output Presets panel. Once the output generation is complete, a Success dialog box is visible at the lower-right corner of the screen.After the output generation is complete, click in the Output Presets panel to view the output.Note:Alternatively, you can generate the output in the authoring window. Click Quick Generate on the toolbar, select the desired output preset, and click Generate.You can then view a progress bar in the Quick Generate dialog box. After the output generation is complete, click next to the output preset to view the output. In case the output generation failed, click next to the selected output preset to view the error log.
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Edge, however, does not, and users must manually load the page in another browser.System administrators and website owners can to help with prompts to supported browsers. Select the More Actions option located at the top of the Edge browser and click on Open with Internet Explorer.Why am I not seeing any indication of Applet content in Edge as I do in other browsers?Even when Java is disabled, other browsers provide a visual cue to users if Applet content is available on a page. Alternatively, it can be found by clicking on the Start button on the taskbar, then All Apps, where Java will be listed, if it is installed.From the Edge browser, how do I open a URL in Internet Explorer?The Edge browser allows you to open the same URL in Internet Explorer.
The Java Control Panel will appear.
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