Clipboard clipboard=diaryFrame.getToolkit().getSystemClipboard();  //系统剪贴板

 String temp;  //复制内容

 

//对“复制”菜单的处理

  else if (e.getSource()==diaryFrame.getmEditCopy()) {  

   temp=diaryFrame.getJta().getSelectedText();

   StringSelection stringSelection=new StringSelection(temp);

   clipboard.setContents(stringSelection,null);

   System.out.println("复制的内容："+temp);

  }

  //对“粘贴”菜单的处理

  else if (e.getSource()==diaryFrame.getmEidtPaste()) {  

   Transferable transferable=clipboard.getContents(this);

   DataFlavor flavor=DataFlavor.stringFlavor;

   if(transferable.isDataFlavorSupported(flavor)){

    try {

     int start=diaryFrame.getJta().getSelectionStart();  

     int end=diaryFrame.getJta().getSelectionEnd();   

     diaryFrame.getJta().replaceRange("",start,end);   

     String str;  

     int n=diaryFrame.getJta().getCaretPosition();   

     str=(String)transferable.getTransferData(flavor);   

     diaryFrame.getJta().insert(str,n);

    }catch(Exception ee){

     ee.printStackTrace();

    }

   }

  }