When an application uses many components, rather than deriving just one class from the JFrame lass, t is often better to encapsulate smaller groups of related components and their event listeners into their own class. A commonly used technique to do this is To extend a class from the JComponent lass to contain other components and their related code O To extend a class from the JFrame class to contain other components and their related code O To extend a class from the JAbstract Button class to contain other components and their related code ? To extend a class from the JPanel class to contan other components and their related code QUESTION 8 To convert the string, str - "285.74 to a double, use the following statement O double x-str O double -str,Double.parseDouble O double x- Double.parseDouble (str) O doublex-Double.Double(str) QUESTION9 What will be the result of executing the following statement? panel. sethorder (BordexFactory.createlinehorder (color.B O The JPane1 referenced by pane1 will have a blue line bonder that is 5 inches thick The JPane1 referenced by pane1 wil have a blue line border that is 5 pixels thick OThe JPanei referenced by panel will have a biue lino bordor that is 6 millimetors thick O The JPane1 referenced by panel wil ave a blue line border that s 5 characters thick QUESTION 10 To return an array of 1ong values from a method, use this as the return type for the method long Olongt1 long LARRAY SE liong