Programmer Dan Bornstein, who testified in the Oracle v. Google trial on Friday, named Android’s “virtual machine” after Dalvik, a small Icelandic fishing village. (credit: Dan Bornstein)

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.

In the tape shown to the jury yesterday morning, Google lawyers highlighted how Ellison’s earlier statements about Android described the new program in glowing terms—a sharp contrast from his later view that Android infringes Oracle’s copyrights.