光明正大 发表于 2025-3-30 11:57:25
An Object-Oriented Application, up of a relatively small number of parts. If these parts are fitted together in the right way you can build a complex piece of equipment very quickly. If you want to build your own PC you can buy a few components such as the mother board, processor, memory, graphics card, and disk drive and plug th注意到 发表于 2025-3-30 15:41:33
Using Applets,(Hyper Text Markup Language) is the language used to describe the content and layout of Web pages. HTML is excellent for displaying information with links to other Web pages, but if you want to create interactive applications which will run on the Web, Java is the most flexible and widely used way o追踪 发表于 2025-3-30 18:06:19
The Graphics, Color and Font classes, applets. The Java Application Programming Interface (API) includes hundreds of classes. Since these classes have been thoroughly tested it is always better to use them rather than creating your own classes.生来 发表于 2025-3-30 22:40:53
Inheritance and Polymorphism,use them to build new applications without re-testing them. Since this approach reduces the amount of new untested code, applications can be created quickly and are likely to have fewer errors. Java 2 has an extensive class library, many Java classes are available from other companies, and of course侵略 发表于 2025-3-31 02:50:20
The Layout Managers,omponents may have been different. On looking more closely at these applets you will see that the components are added from left to right and when the first row is full the next component to be added is placed in the row below. This is the default layout for . objects and is called .. There are fivepredict 发表于 2025-3-31 06:27:19
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