package main; import java.awt.Color; import java.awt.Font; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.IOException; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JLabel; public class Main { private static Integer[] fun(int size) { Integer[] arr = new Integer[size]; for (int i = 0; i < arr.length; i++) { arr[i] = i; } return arr; } public static void main(String[] args) { JFrame frame = new JFrame("定时关机"); frame.setBounds(700, 200, 400, 300); frame.setLayout(null); frame.setFocusable(true); Integer[] hour = fun(12); Integer[] minute = fun(60); JComboBox<Integer> cbHour = new JComboBox<>(hour); cbHour.setBounds(70, 50, 80, 30); frame.add(cbHour); JComboBox<Integer> cbMinute = new JComboBox<>(minute); cbMinute.setBounds(160, 50, 80, 30); frame.add(cbMinute); JButton jb = new JButton("开始"); jb.setBounds(250, 50, 80, 30); frame.add(jb); JLabel jl = new JLabel("", JLabel.CENTER); jl.setBounds(70, 100, 260, 80); jl.setFont(new Font("微软雅黑", 0, 60)); jl.setBorder(BorderFactory.createLineBorder(Color.gray)); frame.add(jl); jb.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { new Thread() { @Override public void run() { cbHour.setVisible(false); cbMinute.setVisible(false); jb.setVisible(false); int hour = (int) cbHour.getSelectedItem(); int minute = (int) cbMinute.getSelectedItem(); minute--; while (hour >= 0) { while (minute >= 0) { for (int i = 59; i >= 0; i--) { String text = String.format("%02d:%02d:%02d", hour, minute, i); jl.setText(text); try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } } minute--; } hour--; } try { Runtime.getRuntime().exec("shutdown /s /t " + 0); } catch (IOException e) { e.printStackTrace(); } } }.start(); } }); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } }
Java+swing 定时关机 附代码
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转载自blog.csdn.net/kyaa111/article/details/80560569
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