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Question 3 (20 marks): Polymorphism, Using Java APIs Consider the class signature of the String class in Java: public final class String extends Object implements

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Question 3 (20 marks): Polymorphism, Using Java APIs Consider the class signature of the String class in Java: public final class String extends Object implements Serializable, Comparable, CharSequence{ } Determine whether the following statements will compile and/or run. Explain completely in your own words why the statements will compile and/or run, referencing the appropriate subclasses, superclasses, subtypes or supertypes involved. Identify the output or errors produced and clearly describe the full reason(s) for any output produced. (i) String one = new String(1); System.out.println (one); (ii) Object two = new String("two"); System.out.println(two); (iii) String three = new Comparable(); System.out.println(three); (iv) Object four = (Object)"four", length(); System.out.println(four); (v) String five = new String(3+25+"5"); System.out.println(five); (vi) char[] seq = {'s', 'i','x','t', 'y'}; CharSequence six = new String (seq, 0, 3); System.out.println(six); (vii) java.io.Serializable seven = String.valueOf("7.0"); System.out.println(seven); (viii) Object eight = new Object(); System.out.println(eight); (ix) java.lang.Comparable nine = new String("9"); System.out.println(nine); (x) String ten = "concatenate".substring(5,8); System.out.println(ten)

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