Class Message


  • public final class Message
    extends Object
    A user interface message consisting of a message key with optional arguments.

    Typically, messages will be presented to the user by looking up their value in a properties file (or "bundle"), and applying MessageFormat to the value with any optional arguments. However, this class does not stipulate how the values held by this object might be used.

    This class is immutable and thread-safe.

    • Method Detail

      • getInstance

        public static Message getInstance​(String key)
        Constructs and returns an instance of a message with the given key and no arguments.
        Parameters:
        key - the i18n message key
        Returns:
        a new immutable Message instance
      • getInstance

        public static Message getInstance​(String key,
                                          Object... arguments)
        Constructs and returns an instance of a message with the given key and arguments.
        Parameters:
        key - the i18n message key
        arguments - the arguments which will be interpolated in the message value, like with MessageFormat
        Returns:
        a new immutable Message instance
      • getInstance

        public static Message getInstance​(String key,
                                          List arguments)
        Constructs and returns an instance of a message with the given key and arguments.
        Parameters:
        key - the i18n message key
        arguments - the arguments which will be interpolated in the message value, like with MessageFormat
        Returns:
        a new immutable Message instance
      • getKey

        public String getKey()
        Returns the message key, used for looking up the message in a localisation bundle.
      • getArguments

        public Object[] getArguments()
        Returns the arguments to the message. These arguments might be interpolated in the message using MessageFormat, for instance.

        Returns null if the message has no arguments.

      • hasArguments

        public boolean hasArguments()
        Returns true if the message has arguments defined, otherwise false.