1         KeyCombination kc1 = new KeyCodeCombination(KeyCode.ENTER,KeyCombination.CONTROL_DOWN);//快捷键:ctrl+enter，第一种
 2         KeyCombination kc2 = new KeyCharacterCombination("ENTER",KeyCombination.CONTROL_DOWN);//快捷键:ctrl+enter，第二种
 3         Mnemonic mc1= new Mnemonic(btn_send,kc1);
 4         scene.addMnemonic(mc1);
 5         
 6         KeyCombination kc3 = new KeyCodeCombination(KeyCode.ENTER,KeyCombination.SHIFT_DOWN);//快捷键:ctrl+enter，第三种
 7         scene.getAccelerators().put(kc3, new Runnable(){
 8             public void run(){
 9                 //按钮事件
10             }
11         });