import ?java.awt.*;import ?java.awt.event.*;class ?FrameDemo{ private ?Frame ?f;private ? Button ?but;FrameDemo(){ init(); } public ? void ?init() { f=new ?Frame("my ?frame"); f.setBounds(300,100,600,500); f.setLayout(new ? FlowLayout()); but=new ?Button("my ?button"); f.add(but); myEvent(); f.setVisible(true); } private ? void ? myEvent() { f.addWindowListener(new ?WindowAdapter() { public ? void ? windowClosing(WindowEvent ? e) { System. exit(0); } }); but.addActionListener(new ?ActionListener() { public ? void ? actionPerformed(ActionEvent ?e) { System.out.println("action ?ok"); } }); but.addMouseListener(new ?MouseAdapter() { private ?int ?count=1; private ?int ?clickCount=1; public ? void ? mouseEntered(MouseEvent ?e) { System.out.println("鼠標進入到該組件"+count++); } public ? void ? mouseClicked(MouseEvent ?e) { System.out.println("點擊動作"+clickCount++); } }); } public ?static ?void ?main(String[] ?args) { new ?FrameDemo(); }}
1 回答
HEI_ComeOn
TA貢獻8條經驗 獲得超4個贊
因為這兩個值所記錄的東西不同啊 ??
count ?用來記錄鼠標進入該組件的次數，但是進入不一定會點擊啊。而 ?clickCount是用來記錄點擊的次數。count應該是會大于等于clickCount的
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