public PropertyResourceBundle(InputStream stream) throws IOException 
{
		if( null == stream ) {
			throw new NullPointerException();
		}
        resources = new Properties();
        resources.load(stream);
}

Constructs a new instance of {@code PropertyResourceBundle} and loads the properties file from the specified {@code InputStream}.

Parameters:

stream - the {@code InputStream}.

Throws:

IOException - if an error occurs during a read operation on the {@code InputStream}.

 public PropertyResourceBundle(Reader reader) throws IOException 
{
        resources = new Properties();
        resources.load(reader);
}

Constructs a new instance of PropertyResourceBundle and loads the properties from the reader.

Parameters:

reader - the input reader

Throws:

IOException -

since: 1.6 -

 public Enumeration<String> getKeys() 
{
        if (parent == null) {
            return getLocalKeys();
        }
        return new Enumeration< String >() {
            Enumeration< String > local = getLocalKeys();
            Enumeration< String > pEnum = parent.getKeys();
            String nextElement;
            private boolean findNext() {
                if (nextElement != null) {
                    return true;
                }
                while (pEnum.hasMoreElements()) {
                    String next = pEnum.nextElement();
                    if (!resources.containsKey(next)) {
                        nextElement = next;
                        return true;
                    }
                }
                return false;
            }
            public boolean hasMoreElements() {
                if (local.hasMoreElements()) {
                    return true;
                }
                return findNext();
            }
            public String nextElement() {
                if (local.hasMoreElements()) {
                    return local.nextElement();
                }
                if (findNext()) {
                    String result = nextElement;
                    nextElement = null;
                    return result;
                }
                // Cause an exception
                return pEnum.nextElement();
            }
        };
}

Answers the names of the resources contained in this PropertyResourceBundle.

 public Object handleGetObject(String key) 
{
        return resources.get(key);
}

Answers the named resource from this PropertyResourceBundle, or null if the resource is not found.

 protected Set<String> handleKeySet() 
{
                
        return resources.stringPropertyNames();
}

Answers a set of the keys in this ResourceBundle but not in its parents.