itwbennett writes "Lawyers for Oracle and Google gave Judge William Alsup of the U.S. District Court in San Francisco an overview of Java and why it was invented, and an explanation of terms such as bytecode, compiler, class library and machine-readable code. The tutorial was to prepare him for a claim construction conference in two weeks, where he'll have to sort out disputes between the two sides about how language in Oracle's Java patents should be interpreted. At one point an attorney for Google, Scott Weingaertner, described how a typical computer is made up of applications, an OS and the hardware underneath. 'I understand that much,' Alsup said, asking him to move on. But he had to ask several questions to grasp some aspects of Java, including the concept of Java class libraries. 'Coming into today's hearing, I couldn't understand what was meant by a class,' he admitted."