java日期格式化

Date d=new Date();
SimpleDateFormat sf=new SimpleDateFormat("yyyy年MM月dd日 E");
System.out.println(sf.format(d));

自已处理，很简单

public class TimeStamp {
public String getTimeStamp() {
return getDate()+getTime();
}

//private Date param=null;
private Calendar ca=Calendar.getInstance();

private String getYear()
{
int y = ca.get(Calendar.YEAR);
String year = ""+y;
return year;
}
private String getMonth()
{
int m = 1+ca.get(Calendar.MONTH);
String month ="";
if(m<10)month="0"+m;
else month=""+m;
return month;
}
private String getDay()
{
int d = ca.get(Calendar.DAY_OF_MONTH);