ImageItem中的图片的相对路径和绝对路径有关问题

/** * prj5_1.java * 使用ChoiceGroup * @ author * @ version 1.0 * create on 2008-10-27 */package src;import javax.microedition.lcdui.*;import javax.microedition.lcdui.Display;//import javax.microedition.lcdui.Displayable;import javax.microedition.lcdui.Form;//import javax.microedition.lcdui.Item;import javax.microedition.midlet.MIDlet;import javax.microedition.midlet.MIDletStateChangeException;public class prj5_2 extends MIDlet {        private Form mainForm=new Form("这是一个含有ImageItem的Form");    private Display dis;    private ImageItem imageItem;            public prj5_2() {        // TODO         Image img=null;        try{            img=Image.createImage("/pics/img.png"); //在这里，如果这张图片和JAVA源文件在同一文件夹，如何处理？        }catch(Exception ex){            ex.printStackTrace();        }        imageItem=            new ImageItem("Picture",img,ImageItem.LAYOUT_CENTER|Item.LAYOUT_EXPAND,"该图像无法装载");            }    protected void startApp() throws MIDletStateChangeException {        dis=Display.getDisplay(this);        dis.setCurrent(mainForm);                mainForm.append(imageItem);                // TODO     }        protected void destroyApp(boolean arg0) throws MIDletStateChangeException {        // TODO     }    protected void pauseApp() {        // TODO     }}