write a static method called toString that takes an array of String as a parameter and returns a string that is the concatenation of all the elements in the array separated by a blank space. So if the array was String [] example ={ "apple", "boat", "cat"}; then a call to toString(example) returns "apple boat cat"; Your method should throw a NullPointerException if the input array is null or if any of the elements is uninitialized ie null. Use a try catch statement. Edit View Insert Format Format Tools Table 12pt v er Paragraph V B I U Tv : You are given the following class and main (client) driver program public class Movie private String title; private String director; public Book( String title, String director){ this.title = title; this.director-director; } // write a getter method for the director // write a setter method for the title } public class MovieMain{ public static void main(String [] args) { // create a variable called newMovie of type Book that has this.title = title; this.director director; ) // write a getter method for the director // write a setter method for the title } public class MovieMain? public static void main(String [] args) { // create a variable called newMovie of type Book that has 17 title as "The Era of the Online Student" // director "Peabody Simpson" } } Given the following definition: String 5 = "Welcome to CSC20! This is a great CSC20 Class" What is the value of the variable position where int position = s.indexOf("CSC20"); O 11 34 OO 015 Given the following definition: String s = "Welcome to CSC20!" What is the output of the following statement? System.out.println(s.charAt(18)); StringOutOfBoundsException O! NullPointerException 00