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DoubleHolder (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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org.omg.CORBA
Class DoubleHolder

java.lang.Object
  org.omg.CORBA.DoubleHolder

All Implemented Interfaces:

Streamable

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public final class DoubleHolder
extends Object
implements Streamable

The Holder for Double. For more information on Holder files, see "Generated Files: Holder Files".

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.

Since:

JDK1.2

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Field Summary
double	value           The double value held by this DoubleHolder object.

 

Constructor Summary
DoubleHolder()           Constructs a new DoubleHolder object with its value field initialized to 0.0.
DoubleHolder(double initial)           Constructs a new DoubleHolder object for the given double.

 

Method Summary
void	_read(InputStream input)           Read a double value from the input stream and store it in the value member.
TypeCode	_type()           Return the TypeCode of this holder object.
void	_write(OutputStream output)           Write the double value stored in this holder to an OutputStream.

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

value

public double value

The double value held by this DoubleHolder object.

Constructor Detail

DoubleHolder

public DoubleHolder()

Constructs a new DoubleHolder object with its value field initialized to 0.0.

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DoubleHolder

public DoubleHolder(double initial)

Constructs a new DoubleHolder object for the given double.

Parameters:

initial - the double with which to initialize the value field of the new DoubleHolder object

Method Detail

_read

public void _read(InputStream input)

Read a double value from the input stream and store it in the value member.

Specified by:

_read in interface Streamable

Parameters:

input - the InputStream to read from.

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_write

public void _write(OutputStream output)

Write the double value stored in this holder to an OutputStream.

Specified by:

_write in interface Streamable

Parameters:

output - the OutputStream to write into.

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_type

public TypeCode _type()

Return the TypeCode of this holder object.

Specified by:

_type in interface Streamable

Returns:

the TypeCode object.

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For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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