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创建一个实现类 TestModifySysDate

代码如下,可以按需修改。

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
import org.junit.Test;
public class TestModifySysDate {
	@Test
	public void getSysdate1(){
		DateFormat   chinaFormatter=DateFormat.getDateTimeInstance(DateFormat.MEDIUM,DateFormat.MEDIUM,Locale.CHINA);  
		  DateFormat   defaultFormatter=DateFormat.getDateTimeInstance();  
		  Date   now=new   Date();
		  DateFormat   gmt08Formatter=DateFormat.getDateTimeInstance();  
		  TimeZone   timezone=TimeZone.getTimeZone( "GMT 08:00 ");  
		  gmt08Formatter.setTimeZone(timezone);  //格式日期/时间 
		  String   defaultDateTime=defaultFormatter.format(now); 
		  String   chinaDateTime=chinaFormatter.format(now);  
		  String   gmt08DateTime=gmt08Formatter.format(now);  
		  System.out.print( defaultDateTime+"  " +chinaDateTime+"  "+ gmt08DateTime);  
	}
	
	@Test
	//修改window7时间
	public void modifyTime(){
		try {
			   Process p = Runtime.getRuntime().exec("cmd /c time 08:55:00");
			//   p.waitFor();
			   BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));

			   if (!br.ready()) {
			    Thread.sleep(100);
			   }
			   while (true) {
			    String s = br.readLine();
			    if (s == null)
			     break;
			    System.out.println(s);
			   }
			   br.close();
			  } catch (Exception e) {
			   e.printStackTrace();
			  }
	}
	
	@Test
	//修改windows7日期
	public void modifyDate(){
		 String date="2015-06-15";
		        try{
		        	Runtime run=Runtime.getRuntime();
		            String command="cmd.exe /c date"+" "+(date);     
		            run.exec(command); 
		        }
		        catch(Exception e)
		        {
		         e.printStackTrace();
		        }
	}
	//linux下修改时间和日期
public static  void main(String args[]) throws Exception{
       FileWriter excutefw = new FileWriter("/usr/updateSysTime.sh");
        BufferedWriter excutebw=new  BufferedWriter(excutefw);
        excutebw.write("date -s \"2015-12-01 00:00:00\"\r\n");
        excutebw.write("clock -w");
        excutebw.close();
        excutefw.close();
        String cmd_date ="sh /usr/updateSysTime.sh";
        Runtime.getRuntime().exec(cmd_date);
	}
}
}

本文标签: 操作系统 基础 时间 java Linux