code: public Stmt prepare( String sql ) throws jsqlite.Exception {
          synchronized (this) {
              Stmt stmt = new Stmt();
              stmt_prepare(sql, stmt);
              return stmt;
          }
      }
docs: Prepare and return SQLite3 statement for SQL. Only available
  in SQLite 3.0 and above, otherwise a no-op.
  
  @param sql SQL statement to be prepared
  @return a Stmt object