Office Dev Blogs

  At some point, you may want to encrypt a PowerPoint file. In this article, I will introduce how to encrypt and decrypt a PowerPoint document in Java application by using Free Spire.Presentation for Java library. Add dependencies First of all, you need to add needed dependencies for including Free Spire.Presentation for Java into your Java project. There are two ways to do that. If you use maven, you need to add the following code to your project’s pom.xml file.     <repositories>               <repository>                   <id>com.e-iceblue</id>                   <name>e-iceblue</name>                   <url>http://re...