Top programmer describes Android’s nuts and bolts in Oracle v. Google

The Oracle v. Google trial rolled into its fifth day on Friday, beginning with videotaped deposition testimony from Oracle founder Larry Ellison. Later in the day, a former Sun scientist in charge of open source testified, as well as a key Android programmer.

The two software giants are in court to resolve a lawsuit that Oracle filed in 2010, accusing Google of infringing copyrights related to 37 Java APIs. An initial ruling was a clean sweep for Google, finding that APIs couldn’t be copyrighted at all, but that result was overturned on appeal. Now Google’s facing a second jury trial, and its only available defense is that its use of Java APIs is “fair use.” Oracle acquired the Java copyrights after buying Sun Microsystems in 2009.