经过测试是没有问题的。

　　代码：

　　package com.test.ui;

　　import java.awt.datatransfer.DataFlavor;

　　import java.awt.datatransfer.UnsupportedFlavorException;

　　import java.awt.dnd.DnDConstants;

　　import java.awt.dnd.DropTarget;

　　import java.awt.dnd.DropTargetDragEvent;

　　import java.awt.dnd.DropTargetDropEvent;

　　import java.awt.dnd.DropTargetEvent;

　　import java.awt.dnd.DropTargetListener;

　　import java.io.File;

　　import java.io.IOException;

　　import java.util.Iterator;

　　import java.util.List;

　　import javax.swing.JTextArea;

　　public class DragFile extends javax.swing.JFrame {

　　public DragFile() {

　　initComponents();

　　}

　　/**

　　* This method is called from within the constructor to initialize the form.

　　* WARNING: Do NOT modify this code. The content of this method is always

　　* regenerated by the Form Editor.

　　*/