This brief tutorial guides on how to remove restrictions on PDF document in Java. It has different types of information like setting the IDE for using the required libraries and a list of necessary tasks to be performed while developing a PDF file restriction remover in Java. This code can be executed in any of the platforms supporting the Java environment and can be improvised by setting selected privileges instead of setting all of them.

Steps to Remove All Restrictions From PDF in Java

1. Set the IDE to use Aspose.PDF for Java to remove restrictions
2. Create an object of PdfFileSecurity class to load the PDF and unlock the restrictions
3. Call the bindPdf() method to load the PDF
4. Declare an object of DocumentPrivilege class and instantiate it with AllowAll privilege
5. Set the configured privilege into the PdfFileSecurity object
6. Save the resultant PDF file with all the privileges

These steps assist in developing a PDF restriction remover in Java. The process is commenced by creating a PdfFileSecurity class object and binding it with the target PDF file whose restrictions are to be removed. In the next steps, the DocumentPrivilege.getAllowAll() option is used to allow all the privileges or remove all the restrictions in the PdfFileSecurity object before saving the resultant PDF file.

Code to Unlock PDF Restrictions in Java

This code demonstrates the process to develop a basic PDF restriction remover tool in Java. If you want to remove a particular restriction say you want to allow copying the contents from the PDF file, you may set the setAllowCopy(true) using the DocumentPrivilege class and set setAllowModifyContents(true) to remove restrictions on modifying the PDF file. There are a number of other options that can be set alone or in conjunction with other options like allowing printing, annotations modification, and screen readers to list a few.

This article has taught us how to change document restrictions in PDF in Java. If you want to learn working with digital signatures, refer to the article on how to add digital signature to PDF in Java.