Digital signatures offer a way to authenticate the sender and ensure the integrity of the document. They make PDF files tamper-evident, meaning that any alteration after signing will be easily detectable. This article explains how to add digital signatures to PDF files in Java, using the Cloud Java SDK, and effortlessly secure your business and legal PDF documents and personal communications.

Steps to Sign PDF with Digital Signatures using Java REST API

1. Sign up and get your API credentials from the GroupDocs Cloud Dashboard
2. Download the GroupDocs.Signature Cloud Java SDK and create a Java project
3. Using the Configuration class, configure your API credentials
4. For digitally signing the PDF, create an instance of the SignApi class
5. Define the source file using the FileInfo class
6. Configure the digital signature properties using SignDigitalOptions
7. Set up the output file, and e-sign settings, and process the request

These steps equip Java developers to digitally sign PDF documents with the Java REST API. All you need are a few simple API calls while leaving the heavy lifting to the cloud API. Digital signatures offer unmatched security and legal compliance as they are accepted by courts, governments, and businesses worldwide as proof of authenticity. With the help of our REST API, developers can automate the signing workflow and afford their end users highly efficient processing on the go.

Code to Sign PDF with Digital Signatures using Java REST API

With the cloud API, adding digital signatures to PDFs in Java applications is more convenient than ever before. Integrating this functionality into your apps enables elevating document security and makes your document signing procedures more efficient. For your enterprise-level document management systems and standalone e-signing solutions, the Java REST API offers a robust and reliable option.

Check out our tutorial on how to Sign Excel Spreadsheets with Text Signatures using Java REST API and expand your e-signature app capabilities.