A.擴(kuò)展類Thread B.實(shí)現(xiàn)接口Runnable C.擴(kuò)展類Runnable D.實(shí)現(xiàn)接口Thread
A.mouseClicked B.mouseEntered C.mouseExited D.mousePressed E.mouseReleaseed
A.沒(méi)有任何內(nèi)容 B.居中位置有個(gè)按鈕 C.左邊有個(gè)按鈕 D.右邊有個(gè)按鈕 E.一個(gè)按鈕填充整個(gè)用戶界面上