A class for converting bukkit ItemStack and ItemStacksArrays to Strings and back

ItemStackSerializer.java

package masecla.practicepvp.serializers;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import org.bukkit.inventory.ItemStack;

public class ItemStackSerializer {
	/**
	 * 
	 * @param what - The ItemStack to be converted into a string
	 * @return The String that contains the ItemStack (will return null if anything goes wrong)
	 */
	public static String convertItemStackToString(ItemStack what){
		 // serialize the object
		String serializedObject = "";
		 try {
		     ByteArrayOutputStream bo = new ByteArrayOutputStream();
		     ObjectOutputStream so = new ObjectOutputStream(bo);
		     so.writeObject(what);
		     so.flush();
		     serializedObject = bo.toString();
		     return serializedObject;
		 } catch (Exception e) {
		     System.out.println(e);
		 }
		 return null;
	}
	/**
	 * 
	 * @param data - The String to be converted into an ItemStack
	 * @return The ItemStack Array obtained from the string (will return void should anything go wrong)
	 */
	public static ItemStack convertStringToItemStack(String data){
		 // deserialize the object
		 try {
		     byte b[] = data.getBytes(); 
		     ByteArrayInputStream bi = new ByteArrayInputStream(b);
		     ObjectInputStream si = new ObjectInputStream(bi);
		     ItemStack obj = (ItemStack) si.readObject();
		     return obj;
		 } catch (Exception e) {
		     System.out.println(e);
		 }
		 return null;
	}
	
	
	
	
	
	
	/**
	 * 
	 * @param what - The ItemStack to be converted into a string
	 * @return The String that contains the ItemStack (will return null if anything goes wrong)
	 */
	public static String convertItemStackArrayToString(ItemStack what[]){
		 // serialize the object
		String serializedObject = "";
		 try {
		     ByteArrayOutputStream bo = new ByteArrayOutputStream();
		     ObjectOutputStream so = new ObjectOutputStream(bo);
		     so.writeObject(what);
		     so.flush();
		     serializedObject = bo.toString();
		     return serializedObject;
		 } catch (Exception e) {
		     System.out.println(e);
		 }
		 return null;
	}
	/**
	 * 
	 * @param data - The String to be converted into an ItemStack Array
	 * @return The ItemStack Array obtained from the string (will return void should anything go wrong)
	 */
	public static ItemStack[] convertStringToItemStackArray(String data){
		 // deserialize the object
		 try {
		     byte b[] = data.getBytes(); 
		     ByteArrayInputStream bi = new ByteArrayInputStream(b);
		     ObjectInputStream si = new ObjectInputStream(bi);
		     ItemStack[] obj = (ItemStack[]) si.readObject();
		     return obj;
		 } catch (Exception e) {
		     System.out.println(e);
		 }
		 return null;
	}
	
    

}