If a programmer implements the java.lang.Runnable interface on a class named Switch when writing code for a multithreaded application, which method must be defined by the Switch class and will be the passage of execution for all threads? thread() init() runnable() O call() None of the answers are correct run() execute() O handle() start() If you are writing a Java program and you would like to write data, such as text into a text file, which of the following classes could you use? None of the answers are correct Scanner TextWriter Print Writer System File File Reader If you are writing Java code and you are given a list defined as the following: List list = new ArrayList(); Which of the following operations are correct? O list.add(blue); O list.add(new Integer(100)); list.add(new java.util.Date()); list.add("Red"); None of the answers are correct O list.add(new ArrayList()); Which keyword can protect a class in a package from accessibility by classes outside the package but will still allow other classes to access the member? abstract final None of the answers are correct O protected don't use any keyword at all to make it the default modifier O public When programming in Java, every class is implicitly a subclass of following methods is available on every object instance in Java Therefore, which of the _? Note: Select all that apply. Java, clonel) Object, start() None of the answers are correct System, println() Package, getPackage() Object, equals() Object, toString() Runnable, thread()