FixedHolder is a container class for values of IDL type "fixed", which is mapped to the Java class java.math.BigDecimal. It is usually used to store "out" and "inout" IDL method parameters. If an IDL method signature has a fixed as an "out" or "inout" parameter, the programmer must pass an instance of FixedHolder as the corresponding parameter in the method invocation; for "inout" parameters, the programmer must also fill the "in" value to be sent to the server. Before the method invocation returns, the ORB will fill in the contained value corresponding to the "out" value returned from the server.