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Create an instance of Document (lines 7-10).To achieve this, we need to follow these steps: With that, we can define the specific features of every defined Text instance. When we want to style some text, we need to add an instance of Textclass into the instance of Paragraphclass (to use the overloaded addmethod). Styling of paragraph: paragraphs inside the document (on the page).Styling of text: block elements inside a single paragraph.

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Since we know how to generate a PDF, we can move on to investigate the possibilities of styling a text (more "advanced" objects like tables or QR codes are not within this scope). IDE result from executing generateSimplePdf test

Of course, we can add more content, but it's sufficient for now.

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Define the text to be added into the PDF and add it wrapped as a Paragraph element into the Document instance (line 17).

It serves as the root element where we can add all the desired elements representing our content (line 15).

Create an instance of Document class as the main point to work with the PDF.

Create an instance of PdfDocument class to handle the writing of the added content according to the PDF specification (line 14).

The generated PDF will be saved into the file specified in the variable file simplePdf (line 10).

Create an instance of PdfWriter class (line 13) to specify the target file name and path and optionally (as is our case) create an instance of WritterProperties class to specify the desired PDF version (the version is 2.0 in our case) for the generated PDF (lines 11-12).

The block elements can contain more specific objects (e.g. The library uses a concept quite similar to DOM where the root element is represented by the instance of Document class. Our goal is to prepare an instance of class and add some content there. To generate our first PDF with the library we need to prepare several instances to be able to add the content.

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The code should work fine with JDK8 as well. Note: this example uses JDK15, but it's not a hard constraint. To start with the iText 7 library, we should learn first how to generate a PDF containing simple text. Therefore, the code has changed only minimally, although there are some notable differences. The library in version 7 is not so different from the previous versions. You can see the evolution of the library (the collection of components) in the image below. Besides that, the library is constantly adding new features. The iText 7 is quite a matured library in its 4th edition (see versions 1, 2, 5, and 7). Note: I have to admit their support is excellent and they never let me down. However, a commercial license is needed for usage in any commercial project. That means the library is free to use in open source projects.

The library has been using the AGPL license model since iText 5.

In addition to this, they can benefit from our rich and up-to-date technical documentation in the Resource Center.

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At the same time your development team has full access to all internal PDF structures, offering them the possibility to read, insert, update and delete any PDF object they want. With iText 7 Core you don't have to worry about PDF technologies and standards, you can just focus on your business needs and document content. IText 7 Core is a straightforward, performant and extensible library that is ready to handle the challenges of today's digital document workflows. See some definitions from the iText site. The library is a collection of several components, but the primary concern of this article is the IText Core component. It can be used to create static or dynamic PDFs and manipulate already existing PDFs with minimum concern for the PDF standards. The iText library can be used to manipulate almost any PDF. To start, I'll begin with a short overview of the library to provide readers with a better understanding of the concept. This will be followed by examples of styling texts or paragraphs. I will provide an example of how to generate a PDF using the library and some methods for testing PDF content. In this article, I will introduce the latest version of the iText 7 library.