ResourceBundle in Java: Usage Guide

ResourceBundle is a class provided by Java for loading internationalization resource files. It helps programs load the corresponding resource files in different language environments, thereby achieving internationalization effects.

ResourceBundle is typically used to load properties files containing text, images, sounds, and other resources, which store various resource information for programs in different language environments.

Using ResourceBundle makes it easy to implement internationalization features, such as loading the corresponding resource files based on the user’s language environment to display the appropriate text information.

Here is a simple example of using ResourceBundle:

// 加载名为messages的国际化资源文件
ResourceBundle bundle = ResourceBundle.getBundle("messages", Locale.US);

// 获取键为greeting的文本信息
String greeting = bundle.getString("greeting");

System.out.println(greeting);

In the example above, we loaded a resource file named ‘messages’ using ResourceBundle and retrieved the text information for the key ‘greeting’ using the getString method. During the program execution, we loaded the corresponding English resource file based on Locale.US to output the appropriate text information.

In general, ResourceBundle is a utility class in Java used for loading internationalization resource files, which helps programs display corresponding resource information in different language environments.