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Assume that Simplelnput is a class whose JavaDoc contains information about the following method: public static double readDouble() This method will display a graphical input box and prompt the user for a valid numeric value, which is returned. Which of the following code segments correctly invokes readDouble from a main method that is not part of the Simplelnput class? O readDouble(Simplelnput); O (static) Simplelnput.readDouble() Simplelnput.readDouble(); input.readDouble(); // where input is an instance of Simplelnput Which of the following are true about a datatype? (Check all that apply) Classes in Java are datatypes. To avoid compiler errors, values of a type must only be used in ways that are defined by the datatype. The 8 primitive types are the only datatypes provided by Java. A datatype defines the set of allowable values that can be stored. Assume that Robot is a class that defines: a constructor which takes a single String value corresponding to the Robot's name. a setName method which takes a single String value that can be used to update a Robot's name Consider the code below: Robot r1 = new Robot("Hal"); Robot r2 = new Robot("Hal"); Robot r3 = r1; r3.setName("Winston"); True or false: The name of the robot referred to by the variable r1 would be affected by the call to setName on line 4. O True O False Given the partial UML class diagram below, which of the following would be considered a private instance variable? (Select all that apply) Dog |-breed: String - chipId: long +has Spots: boolean |-name: String +Dog (nameIn:String,chipIn:long) +getChipId(): long +getName (): String - verifychipId() +speak () breed O hasSpots V verifyChipld O getName