//date类的使用
import java.util.*;
import java.text.SimpleDateFormat;
public class TestCalendar
{
public static void main(String []args)
{
Calendar c1=Calendar.getInstance();
System.out.println(c1.get(Calendar.YEAR)+" year "+c1.get(c1.MONTH)+" month " +c1.get(c1.DAY_OF_MONTH)+" day "+c1.get(c1.HOUR)+":"+c1.get(c1.MINUTE)+":"+c1.get(c1.SECOND));
c1.add(c1.DAY_OF_YEAR,315);
System.out.println(c1.get(Calendar.YEAR)+" year "+c1.get(c1.MONTH)+" month " +c1.get(c1.DAY_OF_MONTH)+" day "+c1.get(c1.HOUR)+":"+c1.get(c1.MINUTE)+":"+c1.get(c1.SECOND));
SimpleDateFormat sdf1=new SimpleDateFormat("yyyy-MM-dd");
SimpleDateFormat sdf2=new SimpleDateFormat("yyyy年MM月dd日");
try
{
Date d=sdf1.parse("2003-03-15");
System.out.println(sdf2.format(d));
}
catch(Exception e)
{
e.printStackTrace();
}
class MyTimerTask extends TimerTask
{
private Timer tm=null;
public MyTimerTask(Timer tm)
{
this.tm=tm;
}
public void run()
{
try{Runtime.getRuntime().exec("calc.exe");}
catch(Exception e){e.printStackTrace();}
tm.cancel();
}
Timer tm=new Timer();
tm.schedule(new MyTimerTask(tm),10000);
}
}
}
import java.util.*;
import java.text.SimpleDateFormat;
public class TestCalendar
{
public static void main(String []args)
{
Calendar c1=Calendar.getInstance();
System.out.println(c1.get(Calendar.YEAR)+" year "+c1.get(c1.MONTH)+" month " +c1.get(c1.DAY_OF_MONTH)+" day "+c1.get(c1.HOUR)+":"+c1.get(c1.MINUTE)+":"+c1.get(c1.SECOND));
c1.add(c1.DAY_OF_YEAR,315);
System.out.println(c1.get(Calendar.YEAR)+" year "+c1.get(c1.MONTH)+" month " +c1.get(c1.DAY_OF_MONTH)+" day "+c1.get(c1.HOUR)+":"+c1.get(c1.MINUTE)+":"+c1.get(c1.SECOND));
SimpleDateFormat sdf1=new SimpleDateFormat("yyyy-MM-dd");
SimpleDateFormat sdf2=new SimpleDateFormat("yyyy年MM月dd日");
try
{
Date d=sdf1.parse("2003-03-15");
System.out.println(sdf2.format(d));
}
catch(Exception e)
{
e.printStackTrace();
}
class MyTimerTask extends TimerTask
{
private Timer tm=null;
public MyTimerTask(Timer tm)
{
this.tm=tm;
}
public void run()
{
try{Runtime.getRuntime().exec("calc.exe");}
catch(Exception e){e.printStackTrace();}
tm.cancel();
}
Timer tm=new Timer();
tm.schedule(new MyTimerTask(tm),10000);
}
}
}
import java.util.TimerTask;public class MyTimerTask extends TimerTask {
private Timer tm=null;
public MyTimerTask(Timer tm)
{
this.tm=tm;
}
public void run()
{
try{Runtime.getRuntime().exec("calc.exe");}
catch(Exception e){e.printStackTrace();}
tm.cancel();
}
}package my.java.simple.demo;import java.util.Timer;public class TestMyTimerTask { /**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Timer tm=new Timer();
tm.schedule(new MyTimerTask(tm),1000);
}}
要好好理解什么是JAVA,这个是最基本的。
tm.schedule(new MyTimerTask(tm),10000); ”这一段应该写在内部类的外面 or 内部类中的某一方法中