*[Open Data Structures (in Java)](http://opendatastructures.org/ods-java.pdf) - Pat Morin (PDF)
*[Open Data Structures (in Java)](http://opendatastructures.org/ods-java.pdf) - Pat Morin (PDF)
*[Playing with Java Microservices on Kubernetes and OpenShift](https://leanpub.com/playing-with-java-microservices-on-k8s-and-ocp) - Nebrass Lamouchi *(Leanpub account or valid email requested)*
*[Processing XML with Java (A Guide to SAX, DOM, JDOM, JAXP, and TrAX) (2002)](http://www.cafeconleche.org/books/xmljava/) - Elliotte Rusty Harold
*[Processing XML with Java (A Guide to SAX, DOM, JDOM, JAXP, and TrAX) (2002)](http://www.cafeconleche.org/books/xmljava/) - Elliotte Rusty Harold
*[The ABC of PDF with iText: PDF Syntax essentials](https://leanpub.com/itext_pdfabc) - Bruno Lowagie *(Leanpub account or valid email requested)*
*[The ABC of PDF with iText: PDF Syntax essentials](https://leanpub.com/itext_pdfabc) - Bruno Lowagie *(Leanpub account or valid email requested)*