Programming with Java, Swing and Squint phần 10 ppsx

... next methods addMessageListener, 104 , 107 close, 100 , 107 .out, 97, 106 .println, see println network event handling, 103 new, 20 next, 100 , 104 , 106 nextInt, 102 nextLine, 97 104 , 106 not, logical, 185 NullPointerException, ... nested NetConnection, 92 107 construction, 96–97, 106 .in, 97, 106 .hasNextLine, see hasNextLine .nextLine, see nextLine .nextInt, see nex...

Ngày tải lên: 12/08/2014, 23:22

... 1, 10, 11, 100 , 101 , and 110. The use of language in the connect-the-dots example is interesting from our point of view because the language used is quite simple. Human languages like English and ... this and contentPane are used to refer to elements of your program. The meanings associated with these names are built into Java and the libraries we are using. Names like WINDOW...

Ngày tải lên: 12/08/2014, 23:22

... to someone who didn’t fully understand what the createWindow method did. On the other hand, the purpose of the numbers 170 and 100 in this.createWindow( 170, 100 ); is not so obvious. 2.6.3 Declaring ... are used to share information between constructors and methods and local variables provide the means to associate a name with an object for use within a single constructor or method...

Ngày tải lên: 12/08/2014, 23:22

... for lunch and they showed up for lunch without sending you a response, you would not be terribly surprised. On the other hand, if you called someone to suggest lunch in the morning and they hung up without ... between web browsers and web servers, and SMTP, POP, and IMAP are all designed to support email. As a result, such protoc ols are known as application protocols. TCP, on the o...

Ngày tải lên: 12/08/2014, 23:22

... certain country. Within Java, curly braces indicate scope boundaries. The scopes we have already described, class and method bodies, are always enclosed in curly braces. In addition, within a method’s ... associated with the entire class. The constructor and the buttonClicked methods are surrounded with rectangles to indicate that their bodies are both parts of the scope of the enti...

Ngày tải lên: 12/08/2014, 23:22

... method within our ColorfulReminder class. Until now, we have only defined event-handling methods such as buttonClicked, and we have only invoked methods that were defined within the Squint or Swing ... ode of the Squint or Swing library there are statements that explicitly invoke textEntered and buttonClicked. There is really no fundamental difference between an event- handling metho...

Ngày tải lên: 12/08/2014, 23:22

... be used with a single operand. That is, if the value of total is 10, then executing the statement total = - total; will change the value to -10. 175 E-notation Standard Representation Standard ... between doubles and floats and between longs, ints, and shorts involve the range of values that are supported by these types. Java provides the operators +, -, *, and / for the standard...

Ngày tải lên: 12/08/2014, 23:22

... associated with the value 3 at the same time, then we think of them as all being associated with exactly the same thing rather than each with their own separate copy of 3. With objects, on the other hand, ... these menus with one entry for each of the 24 hours in a day. We can (and shortly will) fill this menu with entries including the suffixes “AM” and “PM” to distinguish betwe...

Ngày tải lên: 12/08/2014, 23:22

... -1 as the value to be associated with endOfAddress. Invoking substring with -1 as a parameter w ill cause a program error. 255 Figure 10. 10: A complete Journey and its parts to our class. If the ... associated with it. It will be null. With this addition, we can now do away with the cloud used to represent the last two steps of the Journey we described in the preceding section....

Ngày tải lên: 12/08/2014, 23:22

... in SImage stands for “Sharper” or “Self”. Actually, it stands for Squint. Like NetConnection, SImage is a part of the Squint library designed for use with this text. Within the standard Java ... needs, but it does not have any methods. Without methods, all we can do with Journeys is construct them and draw lovely diagrams to depict them like Figure 10. 10. To make the class more us...

Ngày tải lên: 12/08/2014, 23:22