Java.util.ResourceBundle.keySet() Method

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Description

The java.util.ResourceBundle.setParent(ResourceBundle parent) method sets the parent bundle of this bundle. The parent bundle is searched by getObject when this bundle does not contain a particular resource.

Declaration

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

protected void setParent(ResourceBundle parent)

Parameters

parent − this bundle's parent bundle.

Return Value

This method does not return a value.

Exception

NA

Example

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

package com.tutorialspoint;

import java.util.Enumeration;
import java.util.Locale;
import java.util.ResourceBundle;
import java.util.StringTokenizer;

public class ResourceBundleDemo extends ResourceBundle {

   @Override
   public Object handleGetObject(String key) {
      if (key.equals("hello")) {
         return "Hello World!";
      } else {
         return null;
      }
   }

   @Override
   public Enumeration getKeys() {
      StringTokenizer key = new StringTokenizer("Hello World!");
      return key;
   }

   @Override
   protected void setParent(ResourceBundle parent) {
      super.setParent(parent);
   }

   public static void main(String[] args) {

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

      // print the string array 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!