Jacobs cited several emails to and from Google executives that he said would show that Google knew it needed a license for Java and that, having failed to negotiate one, it developed Android with Java anyway.

Google's use of Oracle's intellectual property wasn't a mistake or the result of any confusion, Jacobs told the jury.

"The decision to use Oracle's intellectual property in Android was taken at the highest levels, with a lot of comprehension and awareness about what was going on," he said.

Google made most of its money from desktop advertising, he said, and the popularity of smartphones made Google realize around 2005 that it needed a mobile software platform to stay competitive.

Google had to develop Android quickly, and it had to attract developers to be successful, he said. "How did they meet those requirements? The answer is with components of Java."