How to Convert an InputStream to a PDF File in Java

Learn how to convert an InputStream to a PDF file in Java using popular libraries like Apache PDFBox and iText. This guide provides a step-by-step approach with example code to help you implement the conversion easily and efficiently.
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Converting an InputStream to a PDF file in Java can be a common requirement for many applications, especially those dealing with document processing, content generation, or file conversions. This guide will guide you through the process using two popular libraries: Apache PDFBox and iText.

Prerequisites
To follow along with this guide, you should have:

Basic knowledge of Java programming

Java Development Kit (JDK) installed

Maven or Gradle for dependency management

Using Apache PDFBox

Apache PDFBox is a powerful library that allows you to create and manipulate PDF documents in Java. Here's how to convert an InputStream to a PDF file using PDFBox:

Add PDFBox Dependency

[[See Video to Reveal this Text or Code Snippet]]

Convert InputStream to PDF

Next, write the Java code to read from an InputStream and create a PDF file:

[[See Video to Reveal this Text or Code Snippet]]

Using iText

iText is another popular library for creating and manipulating PDF documents in Java. Below are the steps to convert an InputStream to a PDF using iText:

Add iText Dependency

[[See Video to Reveal this Text or Code Snippet]]

Convert InputStream to PDF

Now, write the Java code to perform the conversion:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Converting an InputStream to a PDF file in Java is straightforward with the help of libraries like Apache PDFBox and iText. Each library has its own strengths, and the choice between them depends on your specific use case and requirements. This guide provided example code for both libraries to help you get started quickly and efficiently.