Java is a general-purpose, concurrent, class-based, object-oriented computer programming language that is specifically designed to have as few implementation dependencies as possible.
Developers can “write once, run anywhere” (WORA), meaning that code that runs on one platform does not need to be recompiled to run on another. Java applications are typically compiled to bytecode (class file) that can run on any Java virtual machine (JVM) regardless of computer architecture.

Java

How to remove text from a PDF in Java…

TL;DR True PDF redaction in Java requires two things: hiding the text visually and removing it from the content stream. This tutorial shows how...
Jacob Collins
2 min read

How to redact PDF text with the JPedal Viewer

TL;DR The JPedal PDF Viewer can be used to redact text in PDF documents. Select ‘Redact’ from the tools menu and draw a rectangle...
Jacob Collins
1 min read

How to remove unused objects from PDF file (Tutorial)

PDF files sometimes contain objects which are never used. This increases the file size and is wasteful. This tutorial shows you how to reduce...
Jacob Collins
44 sec read

How to extract text from a PDF as JSON

Some PDF files can be “tagged” which means they contain information about the structure of the file. This structure is embedded as metadata within...
Jacob Collins
1 min read

How to add a CMYK image to a PDF…

TL;DR Printers operate in CMYK colour space rather than RGB, so adding a CMYK image to a PDF will ensure printing accuracy. The JPedal...
Jacob Collins
1 min read

How to convert PDF files to ePUB

Not all PDFs are created equally. Some go beyond simple visual layouts and include internal tags that describe the document’s structure. These are known...
Jacob Collins
1 min read