* A Holder class for a double
* that is used to store "out" and "inout" parameters in IDL methods.
* If an IDL method signature has an IDL double as an "out"
* or "inout" parameter, the programmer must pass an instance of
* DoubleHolder 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
* value corresponding to the "out" value returned from the server.
*
* If myDoubleHolder is an instance of DoubleHolder,
* the value stored in its value field can be accessed with
* myDoubleHolder.value.
*
* @version 1.14, 09/09/97
* @since JDK1.2
*/
public final class DoubleHolder implements Streamable {
/**
* The double value held by this DoubleHolder
* object.
*/
public double value;
/**
* Constructs a new DoubleHolder object with its
* value field initialized to 0.0.
*/
public DoubleHolder() {
}
/**
* Constructs a new DoubleHolder object for the given
* double.
* @param initial the double with which to initialize
* the value field of the new
* DoubleHolder object
*/
public DoubleHolder(double initial) {
value = initial;
}
/**
* Read a double value from the input stream and store it in the
* value member.
*
* @param input the InputStream to read from.
*/
public void _read(InputStream input) {
value = input.read_double();
}
/**
* Write the double value stored in this holder to an
* OutputStream.
*
* @param output the OutputStream to write into.
*/
public void _write(OutputStream output) {
output.write_double(value);
}
/**
* Return the TypeCode of this holder object.
*
* @return the TypeCode object.
*/
public org.omg.CORBA.TypeCode _type() {
return ORB.init().get_primitive_tc(TCKind.tk_double);
}
}