alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (LegacyHookGetFields.java)

This example Java source code file (LegacyHookGetFields.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.

Learn more about this Java project at its project page.

Java - Java tags/keywords

hashtable, illegalargumentexception, ioexception, legacyhookgetfields, object, string, util

The LegacyHookGetFields.java Java example source code

/*
 * Copyright (c) 2001, 2002, 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 com.sun.corba.se.impl.orbutil;

import java.io.*;
import java.util.Hashtable;

class LegacyHookGetFields extends ObjectInputStream.GetField {
    private Hashtable fields = null;

    LegacyHookGetFields(Hashtable fields){
        this.fields = fields;
    }

    /**
     * Get the ObjectStreamClass that describes the fields in the stream.
     */
    public java.io.ObjectStreamClass getObjectStreamClass() {
        return null;
    }

    /**
     * Return true if the named field is defaulted and has no value
     * in this stream.
     */
    public boolean defaulted(String name)
        throws IOException, IllegalArgumentException  {
        return (!fields.containsKey(name));
    }

    /**
     * Get the value of the named boolean field from the persistent field.
     */
    public boolean get(String name, boolean defvalue)
        throws IOException, IllegalArgumentException {
        if (defaulted(name))
            return defvalue;
        else return ((Boolean)fields.get(name)).booleanValue();
    }

    /**
     * Get the value of the named char field from the persistent fields.
     */
    public char get(String name, char defvalue)
        throws IOException, IllegalArgumentException {
        if (defaulted(name))
            return defvalue;
        else return ((Character)fields.get(name)).charValue();

    }

    /**
     * Get the value of the named byte field from the persistent fields.
     */
    public byte get(String name, byte defvalue)
        throws IOException, IllegalArgumentException {
        if (defaulted(name))
            return defvalue;
        else return ((Byte)fields.get(name)).byteValue();

    }

    /**
     * Get the value of the named short field from the persistent fields.
     */
    public short get(String name, short defvalue)
        throws IOException, IllegalArgumentException {
        if (defaulted(name))
            return defvalue;
        else return ((Short)fields.get(name)).shortValue();

    }

    /**
     * Get the value of the named int field from the persistent fields.
     */
    public int get(String name, int defvalue)
        throws IOException, IllegalArgumentException {
        if (defaulted(name))
            return defvalue;
        else return ((Integer)fields.get(name)).intValue();

    }

    /**
     * Get the value of the named long field from the persistent fields.
     */
    public long get(String name, long defvalue)
        throws IOException, IllegalArgumentException {
        if (defaulted(name))
            return defvalue;
        else return ((Long)fields.get(name)).longValue();

    }

    /**
     * Get the value of the named float field from the persistent fields.
     */
    public float get(String name, float defvalue)
        throws IOException, IllegalArgumentException {
        if (defaulted(name))
            return defvalue;
        else return ((Float)fields.get(name)).floatValue();

    }

    /**
     * Get the value of the named double field from the persistent field.
     */
    public double get(String name, double defvalue)
        throws IOException, IllegalArgumentException  {
        if (defaulted(name))
            return defvalue;
        else return ((Double)fields.get(name)).doubleValue();

    }

    /**
     * Get the value of the named Object field from the persistent field.
     */
    public Object get(String name, Object defvalue)
        throws IOException, IllegalArgumentException {
        if (defaulted(name))
            return defvalue;
        else return fields.get(name);

    }

    public String toString(){
        return fields.toString();
    }
}

Other Java examples (source code examples)

Here is a short list of links related to this Java LegacyHookGetFields.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.