L09b

Due by the end of this meeting

Starter Files:

• Person.java
• Student.java
• Weird.java

Restricted Generic Types

Activity 1

Make a program called Activity1 with a method to check whether a List<String> is sorted. Test it with the following code:

List<String> one = Arrays.asList("1", "4", "4", "Elephant"); List<String> two = Arrays.asList("aardvark", "Banana"); List<String> three = Arrays.asList("Dumb", "Dumber"); System.out.println(isSorted(one)); System.out.println(isSorted(two)); System.out.println(isSorted(three));

Your output should be

true false true

Activity 2

Make a program called Activity2 with a method to check whether a List of any sortable type is sorted. Test it with the following code:

List<Person> people = Arrays.asList(new Person("1"), new Person("4"), new Person("4"), new Person("Elephant")); List<Student> students = Arrays.asList(new Student("aardvark"), new Student("Banana")); List<Weird> weirdos = Arrays.asList(new Weird("Dumb"), new Weird("Dumber")); System.out.println(isSorted(people)); System.out.println(isSorted(students)); // System.out.println(isSorted(weirdos));

Make sure that the last line does not compile. (If you remove the // at the beginning, it should object that method isSorted cannot be applied to the given types (sic).

Your output should be

true false

• 0 points: code does not compile; or does neither activity is complete and correct; or either activity uses methods or controls other than those required.
• 1 point: one of the two activities is complete and correct; or both activities are complete and correct but the program style is incorrect; or both activities are mostly correct and the style is fine.
• 2 points: both activities are complete and correct, and the program uses correct style.

Submit this/these files:

• Activity1.java
• Activity2.java