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PropertyResourceBundle.javaAPI DocJava SE 5 API4169Fri Aug 26 14:57:24 BST 2005java.util

PropertyResourceBundle

public class PropertyResourceBundle extends ResourceBundle
PropertyResourceBundle is a concrete subclass of ResourceBundle that manages resources for a locale using a set of static strings from a property file. See {@link ResourceBundle ResourceBundle} for more information about resource bundles. See {@link Properties Properties} for more information about properties files, in particular the information on character encodings.

Unlike other types of resource bundle, you don't subclass PropertyResourceBundle. Instead, you supply properties files containing the resource data. ResourceBundle.getBundle will automatically look for the appropriate properties file and create a PropertyResourceBundle that refers to it. See {@link ResourceBundle#getBundle(java.lang.String, java.util.Locale, java.lang.ClassLoader) ResourceBundle.getBundle} for a complete description of the search and instantiation strategy.

The following example shows a member of a resource bundle family with the base name "MyResources". The text defines the bundle "MyResources_de", the German member of the bundle family. This member is based on PropertyResourceBundle, and the text therefore is the content of the file "MyResources_de.properties" (a related example shows how you can add bundles to this family that are implemented as subclasses of ListResourceBundle). The keys in this example are of the form "s1" etc. The actual keys are entirely up to your choice, so long as they are the same as the keys you use in your program to retrieve the objects from the bundle. Keys are case-sensitive. 

# MessageFormat pattern
s1=Die Platte \"{1}\" enthält {0}.

# location of {0} in pattern
s2=1

# sample disk name
s3=Meine Platte

# first ChoiceFormat choice
s4=keine Dateien

# second ChoiceFormat choice
s5=eine Datei

# third ChoiceFormat choice
s6={0,number} Dateien

# sample date
s7=3. März 1996
see
ResourceBundle
see
ListResourceBundle
see
Properties
since
JDK1.1

Fields Summary
private Map
lookup
Constructors Summary
public PropertyResourceBundle(InputStream stream)
Creates a property resource bundle.

param
stream property file to read from.

        Properties properties = new Properties();
        properties.load(stream);
        lookup = new HashMap(properties);
Methods Summary
public java.util.EnumerationgetKeys()
Implementation of ResourceBundle.getKeys.

        ResourceBundle parent = this.parent;
        return new ResourceBundleEnumeration(lookup.keySet(),
                (parent != null) ? parent.getKeys() : null);
public java.lang.ObjecthandleGetObject(java.lang.String key)

        if (key == null) {
            throw new NullPointerException();
        }
        return lookup.get(key);