This basic tutorial elaborates how to merge PDF files in Java. By following the mentioned steps and the Java code to merge PDF files, you can embed this feature in your applications. Moreover, for working with this feature you do not need to install any UI application like Adobe Acrobat, etc.

Steps to Merge PDF Files in Java

1. Add the reference to Aspose.PDF for Java to concatenate PDF files
2. Initialize PdfFileEditor class object for merging PDF documents
3. Initialize a string array with input PDF file paths and names
4. Merge the PDF documents into one file with the concatenate function

These steps elaborate on how using Java merge PDF files feature can be achieved. Just configure the API and use a string array to load source documents names. In the last step, merge the files by appending all of the pages together into one file using a single function.

Code to Merge PDF Files in Java

The PdfFileEditor is quite a comprehensive class containing a lot of functions and properties like you can get a list of corrupted items that were met during concatenation, set page breaks at your desired locations, add special margins, append selected pages instead of the complete documents, multiple overloads for delete, extract contents, and many others. The concatenate function also contains multiple overloads that can be used to concatenate streams and files into a single PDF file.

In this article, we have observed how using Java concatenate PDF files in any operating system where Java is installed. If you are interested to learn PDF to Text file conversion then refer to the article on how to convert PDF to Text using Java.