自定义事件格式--常用的 Java编写的各种时间格式类

public class TimeStaticMethod {

/**
* @see 得到当前时刻的时间字符串
* @return String para的标准时间格式的串,例如：返回'2003-08-09 16:00:00'
*/
public static String getLocalString() {
java.util.Date currentDate = new java.util.Date();
java.text.SimpleDateFormat dateFormat = new java.text.SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");
String date = dateFormat.format(currentDate);

return date;
}

public static String getLocalString(java.util.Date currentDate) {
java.text.SimpleDateFormat dateFormat = new java.text.SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");
String date = dateFormat.format(currentDate);

return date;
}

// 的到默认的时间格式为("yyyy-MM-dd HH:mm:ss")的当前时间
public static String getCurrentDateTime() {
return getCurrentDateTime("yyyy-MM-dd HH:mm:ss");
}

/*
根据输入的格式(String _dtFormat)得到当前时间格式
*/
public static String getCurrentDateTime(String _dtFormat) {
String currentdatetime = "";
try {
Date date = new Date(System.currentTimeMillis());
SimpleDateFormat dtFormat = new SimpleDateFormat(_dtFormat);
currentdatetime = dtFormat.format(date);
}
catch (Exception e) {
System.out.println("时间格式不正确");
e.printStackTrace();
}
return currentdatetime;
}

public static Timestamp getTimestamp(String str) {
Timestamp ret = null;
try {
SimpleDateFormat dateFormat = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");

Date date = dateFormat.parse(str);
long datelong = date.getTime();
ret = new Timestamp(datelong);

}
catch (Exception e) {
}
return ret;
}

public static Timestamp getTimestamp(String str,String _dtFormat) {
Timestamp ret = null;
try {
SimpleDateFormat dateFormat = new SimpleDateFormat(
_dtFormat);

Date date = dateFormat.parse(str);
long datelong = date.getTime();
ret = new Timestamp(datelong);

}
catch (Exception e) {
}
return ret;
}

public static Timestamp getTimestamp() {
return getTimestamp(0);
}

public static String getTimestampString(Timestamp sta) {
String ret= "";
try{
String str = sta.toString();
ret = str.substring(0, str.lastIndexOf('.'));
}
catch(Exception e){
ret = "";
}
return ret;
}

/** length 推荐直接用 StaticVariable中的 YearToMonth 和 YearToDay 做参数.
* YearToMonth: 2007-01
* YearToDay: 2007-01-30
* @param sta
* @param length
* @return
*/
public static String getTimestampFormat(Timestamp sta, int length) {
String ret= "";
try{
String str = sta.toString();
ret = str.substring(0, length);
}
catch(Exception e){
ret = "";
}
return ret;
}

public static Timestamp getTimestamp(int disday) {
Calendar c;
c = Calendar.getInstance();
long realtime = c.getTimeInMillis();
realtime += 86400000 * disday;
return new Timestamp(realtime);
}

/**
* @see 得到时间字符串
* @see 例如：StaticMethod.getDateString(-1),可以返回昨天的时间字符串
* @param disday int 和当前距离的天数
* @return String para的标准时间格式的串,例如：返回'2003-8-10 00:00:00'
*/

public static String getTimeString(int disday) {
String ls_display = "";
Calendar c;
c = Calendar.getInstance();
long realtime = c.getTimeInMillis();
realtime += 86400000 * disday;
c.setTimeInMillis(realtime);
String _yystr = "", _mmstr = "", _ddstr = "";
int _yy = c.get(Calendar.YEAR);
_yystr = _yy + "";
int _mm = c.get(Calendar.MONTH) + 1;
_mmstr = _mm + "";
if (_mm < 10) {
_mmstr = "0" + _mm;
}
int _dd = c.get(Calendar.DATE);
_ddstr = _dd + "";
if (_dd < 10) {
_ddstr = "0" + _dd;
}
ls_display = "'" + _yy + "-" + _mm + "-" + _dd + " 00:00:00'";
return ls_display;
}

public static Date getCurrentDateTime(String strDate, String _dtFormat) {
Date tDate = null;

SimpleDateFormat smpDateFormat = new SimpleDateFormat(_dtFormat);
ParsePosition pos = new ParsePosition(0);
tDate = smpDateFormat.parse(strDate, pos); //标准格式的date类型时间

return tDate;
}