Java ResourceBundle: Key Tips

There are some points to keep in mind when using ResourceBundle:

1. Naming of the file: The ResourceBundle file should follow a certain rule, usually ending with .properties, such as messages.properties. Additionally, the file name should correspond to the package name in order to correctly load the resource file.
2. The location of resource files: Resource files should be placed in the classpath, usually in the src/main/resources directory.
3. File encoding of resources: In order to properly load the content from resource files, it is necessary to save resource files in encoding formats such as UTF-8.
4. Utilize the correct Locale: ResourceBundle loads corresponding resources based on the Locale, so make sure to use the correct Locale to access the relevant resources.
5. The contents of resource files are typically stored in the form of key-value pairs, it is important to ensure that each key corresponds to the correct value.
6. Cache issue: ResourceBundle by default will cache loaded resource files, if you need to reload resource files, you can use the clearCache() method to clear the cache.
7. Pay attention to the resource file paths: When loading resource files, it is important to pay attention to the formatting of the paths. Typically, resources are loaded using a class loader, such as ResourceBundle.getBundle(“messages”).