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Java example source code file (DoubleHolder.java)

This example Java source code file (DoubleHolder.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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Java - Java tags/keywords

doubleholder, streamable

The DoubleHolder.java Java example source code

/*
 * Copyright (c) 1995, 2001, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package org.omg.CORBA;

import org.omg.CORBA.portable.Streamable;
import org.omg.CORBA.portable.InputStream;
import org.omg.CORBA.portable.OutputStream;

/**
 * The Holder for <tt>Double.  For more information on
 * Holder files, see <a href="doc-files/generatedfiles.html#holder">
 * "Generated Files: Holder Files"</a>.

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

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