How do I convert an XML persistence to Java Bean?

By Wayan in Beans 0 Comment

In the previous example you can see how to convert a bean into an XML persistence. Now we’ll do the opposite, converting the XML back to a bean. For the BeanToXML class use in this example please refer to How do I convert a bean to XML persistence? example.

package org.kodejava.bean;

import java.beans.XMLDecoder;
import java.io.BufferedInputStream;
import java.util.Objects;

public class XmlToBean {
    public static void main(String[] args) {
        XMLDecoder decoder = new XMLDecoder(new BufferedInputStream(
                Objects.requireNonNull(XmlToBean.class.getResourceAsStream("/Bean.xml"))));

        // Reads the next object from the underlying input stream.
        BeanToXML bean = (BeanToXML) decoder.readObject();
        decoder.close();

        System.out.println("ID              = " + bean.getId());
        System.out.println("Item Name       = " + bean.getItemName());
        System.out.println("Item Colour     = " + bean.getItemColour());
        System.out.println("Item Quantities = " + bean.getItemQuantities());
    }
}

Here is our Bean.xml persistence file:

<?xml version="1.0" encoding="UTF-8"?>
<java version="17" class="java.beans.XMLDecoder">
    <object class="org.kodejava.bean.BeanToXML">
        <void property="id">
            <long>1</long>
        </void>
        <void property="itemColour">
            <string>Dark Red</string>
        </void>
        <void property="itemName">
            <string>T-Shirt</string>
        </void>
        <void property="itemQuantities">
            <int>100</int>
        </void>
    </object>
</java>

The result are:

ID              = 1
Item Name       = T-Shirt
Item Colour     = Dark Red
Item Quantities = 100
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