MessageCatalogFormat (GWT Javadoc)

All Known Implementing Classes:

PropertiesFormat
```
public interface MessageCatalogFormat
```
Interface for writing various message catalog formats.
WARNING: this API is expected to change as we develop additional message catalog formats. In particular, this interface will be extended to support reading message catalogs and further changes may be required.

Implementations of this interface are executed at compile time and therefore must not contain any JSNI code.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.String`	`getExtension()`	Returns the extension to use for this file type, including the dot.
`void`	`write(TreeLogger logger, java.lang.String locale, com.google.gwt.i18n.rebind.AbstractResource.ResourceList resourceList, java.io.PrintWriter out, JClassType messageInterface)`	Write a message catalog file.

- Method Detail
  - write
```
void write(TreeLogger logger,
           java.lang.String locale,
           com.google.gwt.i18n.rebind.AbstractResource.ResourceList resourceList,
           java.io.PrintWriter out,
           JClassType messageInterface)
    throws UnableToCompleteException
```
    Write a message catalog file.
    
    Parameters:
    
    logger - TreeLogger for logging errors/etc
    
    locale - locale of this output file
    
    resourceList - the contents to write
    
    out - the PrintWriter to generate output on
    
    messageInterface - the interface to create (so additional annotations may be accessed)
    
    Throws:
    
    UnableToCompleteException - if a fatal error prevents generating the output file. In this case, the implementation must have already logged an appropriate ERROR message to the logger.
  - getExtension
```
java.lang.String getExtension()
```
    Returns the extension to use for this file type, including the dot.