Prentice.Hall.Introduction.to.Java.Programming,.Brief.Version.9th.(2014).[sharethefiles.com]

592 Chapter 15 Abstract Classes and Interfaces
*15.3 (Shuffle ArrayList) Write the following method that shuffles an ArrayList of
numbers:
public static void shuffle(ArrayList list)
*15.4 (Sort ArrayList) Write the following method that sorts an ArrayList of numbers.
public static void sort(ArrayList list)
**15.5 (Display a calendar) Write a program that displays the calendar for the current
month, as shown in Figure 15.10. Use labels, and set text on the labels to display
the calendar. Use the GregorianCalendar class to obtain the information for
the month, year, first day of the month, and number of days in the month.
JLabel
JPanel with
GridLayout
Each cell is
a JLabel
FIGURE 15.10
The program displays the calendar for the current month.
**15.6 (Display calendars) Rewrite the PrintCalendar class in Listing 5.12 to display
a calendar for a specified month using the Calendar and
GregorianCalendar classes. Your program receives the month and year
from the command line. For example:
java Exercise15_06 1 2012
This displays the calendar shown in Figure 15.11.
FIGURE 15.11 The program displays a calendar for January 2012.
You also can run the program without the year. In this case, the year is the current
year. If you run the program without specifying a month and a year, the
month is the current month.