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Java Standard Edition (SE)

ListResourceBundle


compact1, compact2, compact3
java.util

Class ListResourceBundle

  • Direct Known Subclasses:
    AccessibleResourceBundle


    public abstract class ListResourceBundle
    extends ResourceBundle
    ListResourceBundle is an abstract subclass of ResourceBundle that manages resources for a locale in a convenient and easy to use list. See ResourceBundle for more information about resource bundles in general.

    Subclasses must override getContents and provide an array, where each item in the array is a pair of objects. The first element of each pair is the key, which must be a String, and the second element is the value associated with that key.

    The following example shows two members of a resource bundle family with the base name "MyResources". "MyResources" is the default member of the bundle family, and "MyResources_fr" is the French member. These members are based on ListResourceBundle (a related example shows how you can add a bundle to this family that's based on a properties file). 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.

    
     public class MyResources extends ListResourceBundle {
         protected Object[][] getContents() {
             return new Object[][] {
             // LOCALIZE THIS
                 {"s1", "The disk \"{1}\" contains {0}."},  // MessageFormat pattern
                 {"s2", "1"},                               // location of {0} in pattern
                 {"s3", "My Disk"},                         // sample disk name
                 {"s4", "no files"},                        // first ChoiceFormat choice
                 {"s5", "one file"},                        // second ChoiceFormat choice
                 {"s6", "{0,number} files"},                // third ChoiceFormat choice
                 {"s7", "3 Mar 96"},                        // sample date
                 {"s8", new Dimension(1,5)}                 // real object, not just string
             // END OF MATERIAL TO LOCALIZE
             };
         }
     }
    
     public class MyResources_fr extends ListResourceBundle {
         protected Object[][] getContents() {
             return new Object[][] {
             // LOCALIZE THIS
                 {"s1", "Le disque \"{1}\" {0}."},          // MessageFormat pattern
                 {"s2", "1"},                               // location of {0} in pattern
                 {"s3", "Mon disque"},                      // sample disk name
                 {"s4", "ne contient pas de fichiers"},     // first ChoiceFormat choice
                 {"s5", "contient un fichier"},             // second ChoiceFormat choice
                 {"s6", "contient {0,number} fichiers"},    // third ChoiceFormat choice
                 {"s7", "3 mars 1996"},                     // sample date
                 {"s8", new Dimension(1,3)}                 // real object, not just string
             // END OF MATERIAL TO LOCALIZE
             };
         }
     }
     

    The implementation of a ListResourceBundle subclass must be thread-safe if it's simultaneously used by multiple threads. The default implementations of the methods in this class are thread-safe.

    Since:
    JDK1.1
    See Also:
    ResourceBundle, PropertyResourceBundle
    • Constructor Detail

      • ListResourceBundle

        public ListResourceBundle()
        Sole constructor. (For invocation by subclass constructors, typically implicit.)
    • Method Detail

      • handleGetObject

        public final Object handleGetObject(String key)
        Description copied from class: ResourceBundle
        Gets an object for the given key from this resource bundle. Returns null if this resource bundle does not contain an object for the given key.
        Specified by:
        handleGetObject in class ResourceBundle
        Parameters:
        key - the key for the desired object
        Returns:
        the object for the given key, or null
      • getKeys

        public Enumeration<String> getKeys()
        Returns an Enumeration of the keys contained in this ResourceBundle and its parent bundles.
        Specified by:
        getKeys in class ResourceBundle
        Returns:
        an Enumeration of the keys contained in this ResourceBundle and its parent bundles.
        See Also:
        ResourceBundle.keySet()
      • getContents

        protected abstract Object[][] getContents()
        Returns an array in which each item is a pair of objects in an Object array. The first element of each pair is the key, which must be a String, and the second element is the value associated with that key. See the class description for details.
        Returns:
        an array of an Object array representing a key-value pair.


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