The Java Tutorials have been written for JDK 8.Java教程是为JDK 8编写的。Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available.本页中描述的示例和实践没有利用后续版本中引入的改进,并且可能使用不再可用的技术。See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases.有关Java SE 9及其后续版本中更新的语言特性的摘要,请参阅Java语言更改。
See JDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases.有关所有JDK版本的新功能、增强功能以及已删除或不推荐的选项的信息,请参阅JDK发行说明。
Suppose that you've written a program that displays three messages, as follows:
public class NotI18N { static public void main(String[] args) { System.out.println("Hello."); System.out.println("How are you?"); System.out.println("Goodbye."); } }
You've decided that this program needs to display these same messages for people living in France and Germany. Unfortunately your programming staff is not multilingual, so you'll need help translating the messages into French and German. Since the translators aren't programmers, you'll have to move the messages out of the source code and into text files that the translators can edit. Also, the program must be flexible enough so that it can display the messages in other languages, but right now no one knows what those languages will be.
It looks like the program needs to be internationalized.