Java ResourceBundle.Control getNoFallbackControl() Method

Description

The java ResourceBundle.Control getNoFallbackControl(List<String> formats) method returns a ResourceBundle.Control in which the getFormats method returns the specified formats and the getFallbackLocale method returns null.

Declaration

Following is the declaration for java.util.Control.getNoFallbackControl() method

public static final ResourceBundle.Control getNoFallbackControl(List<String> formats)

Parameters

formats − the formats to be returned by the ResourceBundle.Control.getFormats method

Return Value

This method returns a ResourceBundle.Control supporting the specified formats with no fallback Locale support.

Exception

• NullPointerException − if formats is null

• IllegalArgumentException − if formats is unknown

Checking No Fallback Control of a Given Resource Bundle of US Locale Example

The following example shows the usage of Java ResourceBundle.Control getNoFallbackControl() method to get the required Control. We've created a resource bundle control with FORMAT_DEFAULT using getNoFallbackControl() method. Then supported formats are printed using getFormats() method.

package com.tutorialspoint;

import java.util.ResourceBundle;

public class ResourceBundleControlDemo {
   public static void main(String[] args) {

      // create a new ResourceBundle.Control with default format
      ResourceBundle.Control rbc =     
         ResourceBundle.Control.getNoFallbackControl(ResourceBundle.Control.FORMAT_DEFAULT);

      // print formats
      System.out.println("" + rbc.getFormats("hello"));
   }
}

Output

Assuming we have a resource file hello_en_US.properties available in your CLASSPATH, with the following content. This file will be used as an input for our example program −

hello = Hello World!

Let us compile and run the above program, this will produce the following result −

[java.class, java.properties]