I created an object in java and that code i would like use in salesforce? Is there any way to use java code in salesforce?

package de.vogella.xml.stax.model;

public class Item {
  private String date; 
  private String mode;
  private String unit;
  private String current;
  private String interactive;
  
  public String getDate() {
    return date;
  }
  
  public void setDate(String date) {
    this.date = date;
  }
  public String getMode() {
    return mode;
  }
  public void setMode(String mode) {
    this.mode = mode;
  }
  public String getUnit() {
    return unit;
  }
  public void setUnit(String unit) {
    this.unit = unit;
  }
  public String getCurrent() {
    return current;
  }
  public void setCurrent(String current) {
    this.current = current;
  }
  public String getInteractive() {
    return interactive;
  }
  public void setInteractive(String interactive) {
    this.interactive = interactive;
  }

  @Override
  public String toString() {
    return "Item [current=" + current + ", date=" + date + ", interactive="
        + interactive + ", mode=" + mode + ", unit=" + unit + "]";
  }
} 



-----------------

package de.vogella.xml.stax.read;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.events.Attribute;
import javax.xml.stream.events.EndElement;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.XMLEvent;

import de.vogella.xml.stax.model.Item;

public class StaXParser {
  static final String DATE = "date";
  static final String ITEM = "item";
  static final String MODE = "mode";
  static final String UNIT = "unit";
  static final String CURRENT = "current";
  static final String INTERACTIVE = "interactive";

  @SuppressWarnings({ "unchecked", "null" })
  public List<Item> readConfig(String configFile) {
    List<Item> items = new ArrayList<Item>();
    try {
      // First create a new XMLInputFactory
      XMLInputFactory inputFactory = XMLInputFactory.newInstance();
      // Setup a new eventReader
      InputStream in = new FileInputStream(configFile);
      XMLEventReader eventReader = inputFactory.createXMLEventReader(in);
      // Read the XML document
      Item item = null;

      while (eventReader.hasNext()) {
        XMLEvent event = eventReader.nextEvent();

        if (event.isStartElement()) {
          StartElement startElement = event.asStartElement();
          // If we have a item element we create a new item
          if (startElement.getName().getLocalPart() == (ITEM)) {
            item = new Item();
            // We read the attributes from this tag and add the date
            // attribute to our object
            Iterator<Attribute> attributes = startElement
                .getAttributes();
            while (attributes.hasNext()) {
              Attribute attribute = attributes.next();
              if (attribute.getName().toString().equals(DATE)) {
                item.setDate(attribute.getValue());
              }

            }
          }

          if (event.isStartElement()) {
            if (event.asStartElement().getName().getLocalPart()
                .equals(MODE)) {
              event = eventReader.nextEvent();
              item.setMode(event.asCharacters().getData());
              continue;
            }
          }
          if (event.asStartElement().getName().getLocalPart()
              .equals(UNIT)) {
            event = eventReader.nextEvent();
            item.setUnit(event.asCharacters().getData());
            continue;
          }

          if (event.asStartElement().getName().getLocalPart()
              .equals(CURRENT)) {
            event = eventReader.nextEvent();
            item.setCurrent(event.asCharacters().getData());
            continue;
          }

          if (event.asStartElement().getName().getLocalPart()
              .equals(INTERACTIVE)) {
            event = eventReader.nextEvent();
            item.setInteractive(event.asCharacters().getData());
            continue;
          }
        }
        // If we reach the end of an item element we add it to the list
        if (event.isEndElement()) {
          EndElement endElement = event.asEndElement();
          if (endElement.getName().getLocalPart() == (ITEM)) {
            items.add(item);
          }
        }

      }
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    } catch (XMLStreamException e) {
      e.printStackTrace();
    }
    return items;
  }

}

 How could i use the above code in salesforce? Please help me out from this task....