Java.util.ResourceBundle.getBundle() Method

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Description

The java.util.ResourceBundle.getBundle(String baseName,Locale targetLocale,ClassLoader loader,ResourceBundle.Control control) method returns a resource bundle using the specified base name, target locale, class loader and control. Unlike the getBundle factory methods with no control argument, the given control specifies how to locate and instantiate resource bundles.

Declaration

Following is the declaration for java.util.ResourceBundle.getBundle() method

public static ResourceBundle getBundle(String baseName,Locale targetLocale,ClassLoader loader,ResourceBundle.Control control)

Parameters

• baseName − the base name of the resource bundle, a fully qualified class name

• locale − the locale for which a resource bundle is desired

• loader − the class loader from which to load the resource bundle

• control − the control which gives information for the resource bundle loading process

Return Value

This method returns a resource bundle for the given base name and locale

Exception

• NullPointerException − if baseName,locale,loader orcontrol is null

• MissingResourceException − if no resource bundle for the specified base name can be found

• IllegalArgumentException − if the given control doesn't perform properly (e.g., control.getCandidateLocales returns null.) Note that validation of control is performed as needed.

Example

The following example shows the usage of java.util.ResourceBundle.getBundle() method.

package com.tutorialspoint;

import java.util.Locale;
import java.util.ResourceBundle;
import java.util.ResourceBundle.Control;

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

      ClassLoader cl = ClassLoader.getSystemClassLoader();

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

      // create a new ResourceBundle with specified locale
      // and SystemClassLoader and a Control
      ResourceBundle bundle = ResourceBundle.getBundle("hello", Locale.US, cl, rbc);

      // print the text assigned to key "hello"
      System.out.println("" + bundle.getString("hello"));
   }
}

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 −

Hello World!