指定的时间关机和延迟关机

//本程序利用Java程序向系统发送命令，倒计时关机或定时关机功能 //@author:张文宇 //使用JCreater编写代码 //倒计时关机即在用户输入的秒数后关机;定时关机即在用户输入的XX:XX:XX时关机 import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.io.*; import java.net.URL; public class CloseMyComputer extends JFrame implements ActionListener { JLabel label,label1,label2; JTextField text1,text2; JButton button1,button2; CloseMyComputer() { super("定时关机"); this.setBounds(500,200,218,500); this.setLayout(null); this.getContentPane().setBackground(new Color(100,149,237)); label=new JLabel(); URL url = getClass().getResource("img/close.png"); label.setIcon(new ImageIcon(url)); label.setBounds(0,0,200,200); label1=new JLabel("倒计时关机时间(S)"); label1.setForeground(new Color(250,250,250)); label1.setBounds(20,230,150,20); text1=new JTextField(); text1.setBounds(20,260,150,20); label2=new JLabel("定时关机时间(S)"); label2.setForeground(new Color(250,250,250)); label2.setBounds(20,290,150,20); text2=new JTextField(); text2.setBounds(20,320,150,20); button1=new JButton("开始"); button1.setBounds(20,380,60,20); button1.addActionListener(this); button2=new JButton("取消"); button2.setBounds(110,380,60,20); button2.addActionListener(this); this.add(label); this.add(label1); this.add(text1); this.add(label2); this.add(text2); this.add(button1); this.add(button2); this.setVisible(true); } @Override public void actionPerformed(ActionEvent e) { String string1,string2; string1=text1.getText(); string2=text2.getText(); if(e.getSource()==button1) { if((string1.equals(""))&&(string2.equals(""))) { javax.swing.JOptionPane.showMessageDialog(this,"请选择一种关机输入!"); } else if(!(string1.equals(""))&&!(string2.equals(""))) { javax.swing.JOptionPane.showMessageDialog(this,"只能选择一种关机方法!"); } else if(!(string1.equals(""))&&(string2.equals(""))) { //选择倒计时关机(时间单位是：分钟) try{ //执行关机在XX分钟以后 String command="shutdown.exe -s -t "+string1; Runtime r=Runtime.getRuntime(); //新建进程执行该命令 Process p=r.exec(command); BufferedReader br=new BufferedReader(new InputStreamReader(p.getInputStream())); StringBuffer sb=new StringBuffer(); String inline; while(null!=(inline=br.readLine())) { sb.append(inline).append("\n"); } System.out.println(sb.toString()); } catch(IOException ee){} } else if((string1.equals(""))&&!(string2.equals(""))) { //选择定时关机（时间格式：22:15:30） try{ //命令：在XX:XX:XX执行关机 String command="at "+string2+" shutdown.exe -s"; Runtime r=Runtime.getRuntime(); Process p=r.exec(command); BufferedReader br=new BufferedReader(new InputStreamReader(p.getInputStream())); StringBuffer sb=new StringBuffer(); String inline; while(null!=(inline=br.readLine())) { sb.append(inline).append("\n"); } System.out.println(sb.toString()); } catch(IOException ee){} } } else if(e.getSource()==button2) { } } public static void main(String args[]) { new CloseMyComputer(); } }