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  1. import javax.xml.bind.*;
  2. import javax.xml.bind.annotation.*;
  3. import javax.xml.bind.annotation.adapters.*;
  4. import java.io.*;
  5. import java.util.*;
  6.  
  7. @XmlRootElement(name="myroot")
  8. @XmlAccessorType(XmlAccessType.NONE)
  9. class SO19509130d {
  10.  
  11.     private String id;
  12.     private Properties props = new Properties();
  13.  
  14.     @XmlAttribute public String getId() { return id; }
  15.     public void setId(String id) { this.id = id; }
  16.  
  17.     @XmlElement(name="property")
  18.     public Collection<XmlProperty> getProperties() {
  19.         return new XmlProperties(props);
  20.     }
  21.  
  22.     @XmlType(name="property") static class XmlProperty {
  23.         @XmlAttribute public String key;
  24.         @XmlValue public String value;
  25.     }
  26.  
  27.     static class XmlProperties extends AbstractCollection<XmlProperty> {
  28.         private final Properties props;
  29.         public XmlProperties(Properties props) { this.props = props; }
  30.         public int size() { return props.size(); }
  31.         public Iterator<XmlProperty> iterator() {
  32.             return new XmlPropertyIterator(props.entrySet().iterator());
  33.         }
  34.         public boolean add(XmlProperty xml) {
  35.             return !xml.value.equals(props.setProperty(xml.key, xml.value));
  36.         }
  37.     }
  38.  
  39.     static class XmlPropertyIterator implements Iterator<XmlProperty> {
  40.         private final Iterator<Map.Entry<Object, Object>> base;
  41.         public XmlPropertyIterator(Iterator<Map.Entry<Object, Object>> base) {
  42.             this.base = base;
  43.         }
  44.         public boolean hasNext() { return base.hasNext(); }
  45.         public void remove() { base.remove(); }
  46.         public XmlProperty next() {
  47.             Map.Entry<?, ?> entry = base.next();
  48.             XmlProperty xml = new XmlProperty();
  49.             xml.key = entry.getKey().toString();
  50.             xml.value = entry.getValue().toString();
  51.             return xml;
  52.         }
  53.     }
  54.  
  55.     public static void main(String[] args) throws Exception {
  56.         SO19509130d obj = new SO19509130d();
  57.         obj.id = "theID";
  58.         obj.props.setProperty("key1", "val1");
  59.         obj.props.setProperty("key2", "val2");
  60.         JAXBContext ctx = JAXBContext.newInstance(SO19509130d.class);
  61.         Marshaller m = ctx.createMarshaller();
  62.         Unmarshaller u = ctx.createUnmarshaller();
  63.         ByteArrayOutputStream baos = new ByteArrayOutputStream();
  64.         m.marshal(obj, baos);
  65.         InputStream bais = new ByteArrayInputStream(baos.toByteArray());
  66.         obj = (SO19509130d)u.unmarshal(bais);
  67.         m.marshal(obj, System.out);
  68.         System.out.println();
  69.     }
  70. }
  71.  
Success #stdin #stdout 0.25s 381824KB
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Standard input is empty
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<?xml version="1.0" encoding="UTF-8" standalone="yes"?><myroot id="theID"><property key="key2">val2</property><property key="key1">val1</property></myroot>
https://ideone.com/Mztb1W
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
public

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