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import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Test_17_7 extends JFrame{ private StillClock stclk = new StillClock(); private JPanel JHold = new JPanel(); private JLabel jlHour = new JLabel("Hour"); private JLabel jlMinut = new JLabel("Minute"); private JLabel jlScnd = new JLabel("Second"); private JTextField jt1 = new JTextField(2); private JTextField jt2 = new JTextField(2); private JTextField jt3 = new JTextField(2); public Test_17_7(){ JHold.setLayout(new GridLayout(1,6)); JHold.add(jlHour); JHold.add(jt1); JHold.add(jlMinut); JHold.add(jt2); JHold.add(jlScnd); JHold.add(jt3); jt1.addKeyListener(new KeyAdapter(){ public void keyPressed(KeyEvent e){ if(e.getKeyCode() == KeyEvent.VK_ENTER) stclk.setHour(Integer.parseInt(jt1.getText())); } }); jt2.addKeyListener(new KeyAdapter(){ public void keyPressed(KeyEvent e){ if(e.getKeyCode() == KeyEvent.VK_ENTER) stclk.setMinute(Integer.parseInt(jt2.getText())); } }); jt3.addKeyListener(new KeyAdapter(){ public void keyPressed(KeyEvent e){ if(e.getKeyCode() == KeyEvent.VK_ENTER) stclk.setSecond(Integer.parseInt(jt3.getText())); } }); add(stclk,BorderLayout.CENTER); add(JHold,BorderLayout.SOUTH); } public static void main(String[] args) { // TODO Auto-generated method stub Test_17_7 frame = new Test_17_7(); frame.setTitle("Test_17_7"); frame.pack(); frame.setLocationRelativeTo(null); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } }
需要注意的地方: keyPressed總是不小心會大寫,這樣接口的響應函數就得不到調用
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