McNealy's testimony contrasted with that of Jonathan Schwartz, who became Sun's CEO after McNealy and was also on the stand Thursday. Schwartz emphasized Java's openness and testified that Sun never felt it had grounds to bring a lawsuit against Google.

The two were testifying in the second week of Oracle's , in which it accuses the company of infringing Oracle's Java patents and copyrights in the Android OS. Oracle acquired the rights to Java when it bought Sun in early 2010.

McNealy co-founded Sun in 1982 and was its chairman and CEO until 2006, when he handed the CEO title to Schwartz. He remained chairman until Oracle bought Sun.

The former Sun chiefs disagreed with each other on several issues, and the jurors will have to choose who to believe.

For example, Schwartz suggested his blog at Sun reflected the company's corporate policy and that his blog posts were "the equivalent of holding a press conference." A 2007 post from Schwartz congratulating Google on Android's release has become at trial.