java开发（一）文本的复制粘贴importjava.awt.Toolkit;importjava.awt.datatransfer.Clipboard;importjava.awt.datatransfer.DataFlavor;importjava.awt.datatransfer.StringSelection;importjava.awt.datatransfer.UnsupportedFlavorException;importjava.io.IOException;publicclassCopyAndPaste{publicstaticvoidmain(