Computers and Technology, 17.04.2020 00:31 rajenkins79
Devise another class, Billfold, which contains slots for two cards, card1 and card2, a method void addCard(Card) and a method String formatCards(). The addCard method checks whether card1 is null. If so, it sets card1 to the new card. If not, it checks card2. If both cards are set already, the method has no effect. Of course, formatCards invokes the format method on each non-null card and produces a string with the format [card1|card2] 5. Write a tester program that adds two objects of different subclasses of Card to a Billfold object. Test the results of the formatCards methods. 6. Explain why the output of your BillfoldTester program demonstrates polymorphism. 7. The Card superclass defines a method isExpired, which always returns false. This method is not appropriate for the driver license. Supply a method header and body for DriverLicense. isExpired() that checks whether the driver license is already expired (i. e., the expiration year is less than the current year). To work with dates, you can use the methods and constants supplied in abstract class Calendar which are inherited by the concrete class GregorianCalendar. You create a Calendar as follows: GregorianCalendar calendar
Answers: 3
Computers and Technology, 21.06.2019 22:20, ptrlvn01
This problem has been solved! see the answeran evil king has a cellar containing n bottles of expensive wine, and his guards have just caught a spy trying to poison the king’s wine. fortunately, the guards caught the spy after he succeeded in poisoning only one bottle. unfortunately, they don’t know which one. to make matters worse, the poison the spy used was very deadly; just one drop diluted even a billion to one will still kill someone. even so, the poison works slowly; it takes a full month for the person to die. design a scheme that allows the evil king to determine exactly which one of his wine bottles was poisoned in just one month’s time while expending at most o(logn) of his taste testers. you are not allowed to use n testers, one for each bottle, and see which one tester dies after 30 days.(no pseudocode needed. just answer in words, how many testers you use, how you use them and why you correctly identify the poisoned bottle in 30 days)
Answers: 2
Computers and Technology, 23.06.2019 22:30, ghari112345
Jamie has to enter the names, employee id’s, and income of a group of employees into a worksheet. which option will jamie use to describe the data
Answers: 3
Devise another class, Billfold, which contains slots for two cards, card1 and card2, a method void a...
Computers and Technology, 02.11.2020 17:00
English, 02.11.2020 17:00
Mathematics, 02.11.2020 17:00