Google Inc.’s Android operating system has generated revenue of $31 billion and $22 billion in profit, a lawyer for Oracle Corp. said in court while disclosing figures Google says shouldn’t have been made public, Bloomberg reports.

An analysis of the search engine giant’s tightly held financial information was disclosed January 14 by an Oracle attorney in the database maker’s lawsuit accusing Google of using its Java software without paying for it to develop Android.

Google said in a court filing that the lawyer based her statement on information derived from its confidential internal financial documents.

Android, which was launched in 2008, makes money for Google in two ways: advertisements supplied by Google shown on Android phones, and revenue Google takes from its mobile app store, Google Play.

The figure is based on a methodology not outlined by Oracle, said a person familiar with the matter who was not authorized to speak publicly.