This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Yes, this is 'standard case in java'.
I'll skip details, I'm sure you will explore it some day, if you will make more java.
If you are sure which classes are required by your project, and if these classes are not using any other classes from mentioned jar file - you can copy them to your project, change the package (or not) and use them.
Of course only if the used library licence allows you to do that!
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com