修改Windows和linux系统时间

1、修改本机Windows的系统时间，Java代码实现：

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class ChangeWindowsDate {

    /**
     * @param args
     * @throws IOException
     */
    public static void main(String[] args) {
        try {
            Runtime.getRuntime().exec("cmd /c date 2013-11-08") ;
            Runtime.getRuntime().exec("cmd /c time 18:10:00") ;
        } catch (IOException e) {
            e.printStackTrace() ;
        }
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss") ;
        Date date = new Date() ;
        System.out.println(sdf.format(date));

    }

}

2、修改远程Linux Server的系统时间，Java代码实现：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import ch.ethz.ssh2.Connection;
import ch.ethz.ssh2.Session;
import ch.ethz.ssh2.StreamGobbler;

public class ChangeLinuxDate {

    /**
     * @param args
     */
    public static void main(String[] args) {
        String host_ip1 = "192.168.1.118" ;
        int port = 22 ;
        String username = "root" ;
        String password = "123456" ;        

        String cmd = "date -s '2013-08-04 23:00:00'" ;

        Connection conn1 = new Connection(host_ip1, port) ;
        Session session1 = null ;

        try {
            conn1.connect() ;
            boolean isconn = conn1.authenticateWithPassword(username, password) ;
            if(!isconn){
                System.out.println("用户名称或者是密码不正确");
            }else{
                System.out.println(host_ip1 + ":" + "已经连接OK");
                session1 = conn1.openSession() ;
                session1.execCommand(cmd) ;

                InputStream is = new StreamGobbler(session1.getStdout());
                BufferedReader brs = new BufferedReader(new InputStreamReader(is));
                while(true){
                    String line = brs.readLine();
                    if(line==null){
                        break;
                    }
                    System.out.println(line);
                }
                is.close() ;
                brs.close() ;
                session1.close() ;
                conn1.close() ;
            }

        } catch (IOException e) {
            e.printStackTrace() ;
        }

    }

}