Oracle and Google both rested their cases in the first of three trial phases for Oracle's lawsuit against Google over Android. The two sides shied away from the larger revelations and accusations, with Google mostly relying on expert testimony from Duke University's Dr. Owen Astrachan that portrayed the Java programming interfaces as basic fundamentals for programming rather than a copyrightable form. While Google could have reordered the structure of its custom code for Android, using a structure like Sun's and making the actual implementation different helped ease d