add 3-5-Clipboard

java/3-5-Clipboard/ClipboardDemo.java

java/3-5-Clipboard/DragAndDropDemo.java

java/3-5-Clipboard/makefile

java/3-5-Clipboard/transferDemo/DragableImage.java

java/3-5-Clipboard/transferDemo/ImageGridPanel.java

java/3-5-Clipboard/transferDemo/ImageTransferHandler.java

java/3-5-Clipboard/transferDemo/ImageTransferable.java

java/3-5-Clipboard/transferDemo/TransferDemo.java

java/3-5-Clipboard/transferDemo/images/angry.jpg

java/3-5-Clipboard/transferDemo/images/happy.jpg

java/3-5-Clipboard/transferDemo/images/laughing.jpg

java/3-5-Clipboard/transferDemo/images/worried.jpg

java/3-5-Clipboard/transferDemo/makefile