Java.util.ResourceBundle.getStringArray() Method



The java.util.ResourceBundle.getStringArray(String key) method gets a string array for the given key from this resource bundle or one of its parents.


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

public final String[] getStringArray(String key)


  • key -- the key for the desired string array

Return Value

This method returns the string for the given key array


  • NullPointerException -- if key is null

  • MissingResourceException -- if no object for the given key can be found

  • ClassCastException -- if the object found for the given key is not a string


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

package com.tutorialspoint;

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

// this method seems to be having problems with the base implementation
// the following example shows an alternative way doing the same function
public class ResourceBundleDemo {

   public static String[] getPropertyStringArray(ResourceBundle bundle, Strin
   keyPrefix) {
   String[] result;
   Enumeration<String> keys = bundle.getKeys();
   ArrayList<String> temp = new ArrayList<String>();

   // get the keys and add them in a temporary ArrayList
   for (Enumeration<String> e = keys; keys.hasMoreElements();) {
   String key = e.nextElement();
   if (key.startsWith(keyPrefix)) {

   // create a string array based on the size of temporary ArrayList
   result = new String[temp.size()];

   // store the bundle Strings in the StringArray
   for (int i = 0; i < temp.size(); i++) {
   result[i] = bundle.getString(temp.get(i));

   return result;

   public static void main(String[] args) {

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

   // save the keys in a string array
   String[] s = ResourceBundleDemo.getPropertyStringArray(bundle, "");

   // print the string array one by one
   for (int i = 0; i < s.length; i++) {
   System.out.println("" + s[i]);


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

hello=Hello World!
bye=Goodbye World!
morning=Good Morning World!

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

Hello World!
Goodbye World!
Good Morning World!