Java 访问(复制,粘贴)剪切板（转）

以下共有4个函数分别是： 
1.从剪切板获得文字。 
2.将字符串复制到剪切板。 
3.从剪切板获得图片。 
4.复制图片到剪切板。 

/**
     * 从剪切板获得文字。
     */
    public static String getSysClipboardText() {
        String ret = "";
        Clipboard sysClip = Toolkit.getDefaultToolkit().getSystemClipboard();
        // 获取剪切板中的内容
        Transferable clipTf = sysClip.getContents(null);

        if (clipTf != null) {
            // 检查内容是否是文本类型
            if (clipTf.isDataFlavorSupported(DataFlavor.stringFlavor)) {
                try {
                    ret = (String) clipTf
                            .getTransferData(DataFlavor.stringFlavor);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }

        return ret;
    }

    /**
     * 将字符串复制到剪切板。
     */
    public static void setSysClipboardText(String writeMe) {
        Clipboard clip = Toolkit.getDefaultToolkit().getSystemClipboard();
        Transferable tText = new StringSelection(writeMe);
        clip.setContents(tText, null);
    }

    /**
     * 从剪切板获得图片。
     */
    public static Image getImageFromClipboard() throws Exception {
        Clipboard sysc = Toolkit.getDefaultToolkit().getSystemClipboard();
        Transferable cc = sysc.getContents(null);
        if (cc == null)
            return null;
        else if (cc.isDataFlavorSupported(DataFlavor.imageFlavor))
            return (Image) cc.getTransferData(DataFlavor.imageFlavor);
        return null;
    }

    /**
     * 复制图片到剪切板。
     */
    public static void setClipboardImage(final Image image) {
        Transferable trans = new Transferable() {
            public DataFlavor[] getTransferDataFlavors() {
                return new DataFlavor[] { DataFlavor.imageFlavor };
            }

            public boolean isDataFlavorSupported(DataFlavor flavor) {
                return DataFlavor.imageFlavor.equals(flavor);
            }

            public Object getTransferData(DataFlavor flavor)
                    throws UnsupportedFlavorException, IOException {
                if (isDataFlavorSupported(flavor))
                    return image;
                throw new UnsupportedFlavorException(flavor);
            }

        };
        Toolkit.getDefaultToolkit().getSystemClipboard().setContents(trans,
                null);
    }

转自：http://javapub.iteye.com/blog/939167