Theory is when you know something, but it doesn’t work. Practice is when something works, but you don’t know why. Programmers combine theory and practice: Nothing works and they don’t know why.
This chapter covers
So far, we’ve been testing everything from the Java EE spec. All the Java EE components that we’ve dealt with (JSPs, tag libraries, servlets, filters, EJBs, and so on) have been available for a long time. In this chapter we discuss a technology that became popular relatively recently and is getting more popular every day: OSGi.
We start the chapter by introducing OSGi We then walk ...