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This article provides an in-depth guide to merging multiple PDF files in Java using the Apache PDFBox library. By analyzing common errors such as COSVisitorException, we focus on the proper use of the PDFMergerUtility class, which offers a more stable and efficient solution than manual page copying. Starting from basic concepts, the article explains core PDFBox components including PDDocument, PDPage, and PDFMergerUtility, with code examples demonstrating how to avoid resource leaks and file descriptor issues. Additionally, we discuss error handling strategies, performance optimization techniques, and new features in PDFBox 2.x, helping developers build robust PDF processing applications.

This article provides a comprehensive guide to extracting text from PDF files using Apache PDFBox in Java. Through complete code examples and in-depth analysis, it demonstrates basic usage, page range control techniques, and comparisons with other libraries. The article also discusses limitations of PDF text extraction and offers best practice recommendations for efficient PDF document processing.

This article explores a robust method for generating PDF files in Java by leveraging XML data transformation through XSLT and XSL-FO, rendered using Apache FOP. It covers the workflow from data serialization to PDF output, highlighting flexibility for documents like invoices and manuals. Alternative libraries such as iText and PDFBox are briefly discussed for comparison.

This paper examines the critical issue of text handling in PDF to SVG conversion, focusing on the advantages of Inkscape in preserving editable text elements. By comparing multiple conversion approaches, it details the command-line implementation of Inkscape and discusses core technologies including font mapping and path optimization. The article also provides best practice recommendations for real-world applications, helping developers maintain SVG quality while ensuring text maintainability.