現在の日付に対応する月初め、月末、季初、季末、年初、年末時間を取得するために使用されます.
5335 ワード
package com.zrar.date;
import java.util.Calendar;
/**
*
* : ， ， ， ， ， ， String
* 1、 today()
* 2、 thisMonth()
* 3、 thisMonthEnd()
* 4、 thisSeason()
* 5、 thisSeasonEnd()
* 6、 thisYear()
* 7、 thisYearEnd()
* 8、 leapYear
*
* : ：xxxx-yy-zz (eg: 2007-12-05)
*
* :
*
* @author pure
*/
public class DateThis {
private int x; // ：
private int y; // ：
private int z; // ：
private Calendar localTime; //
public DateThis() {
localTime = Calendar.getInstance();
}
/**
* ： ：xxxx-yy-zz (eg: 2007-12-05)<br>
* @return String
* @author pure
*/
public String today() {
String strY = null;
String strZ = null;
x = localTime.get(Calendar.YEAR);
y = localTime.get(Calendar.MONTH) + 1;
z = localTime.get(Calendar.DATE);
strY = y >= 10 ? String.valueOf(y) : ("0" + y);
strZ = z >= 10 ? String.valueOf(z) : ("0" + z);
return x + "-" + strY + "-" + strZ;
}
/**
* ： ：xxxx-yy-zz (eg: 2007-12-01)<br>
* @return String
* @author pure
*/
public String thisMonth() {
String strY = null;
x = localTime.get(Calendar.YEAR);
y = localTime.get(Calendar.MONTH) + 1;
strY = y >= 10 ? String.valueOf(y) : ("0" + y);
return x + "-" + strY + "-01";
}
/**
* ： ：xxxx-yy-zz (eg: 2007-12-31)<br>
* @return String
* @author pure
*/
public String thisMonthEnd() {
String strY = null;
String strZ = null;
boolean leap = false;
x = localTime.get(Calendar.YEAR);
y = localTime.get(Calendar.MONTH) + 1;
if (y == 1 || y == 3 || y == 5 || y == 7 || y == 8 || y == 10 || y == 12) {
strZ = "31";
}
if (y == 4 || y == 6 || y == 9 || y == 11) {
strZ = "30";
}
if (y == 2) {
leap = leapYear(x);
if (leap) {
strZ = "29";
}
else {
strZ = "28";
}
}
strY = y >= 10 ? String.valueOf(y) : ("0" + y);
return x + "-" + strY + "-" + strZ;
}
/**
* ： ：xxxx-yy-zz (eg: 2007-10-01)<br>
* @return String
* @author pure
*/
public String thisSeason() {
String dateString = "";
x = localTime.get(Calendar.YEAR);
y = localTime.get(Calendar.MONTH) + 1;
if (y >= 1 && y <= 3) {
dateString = x + "-" + "01" + "-" + "01";
}
if (y >= 4 && y <= 6) {
dateString = x + "-" + "04" + "-" + "01";
}
if (y >= 7 && y <= 9) {
dateString = x + "-" + "07" + "-" + "01";
}
if (y >= 10 && y <= 12) {
dateString = x + "-" + "10" + "-" + "01";
}
return dateString;
}
/**
* ： ：xxxx-yy-zz (eg: 2007-12-31)<br>
* @return String
* @author pure
*/
public String thisSeasonEnd() {
String dateString = "";
x = localTime.get(Calendar.YEAR);
y = localTime.get(Calendar.MONTH) + 1;
if (y >= 1 && y <= 3) {
dateString = x + "-" + "03" + "-" + "31";
}
if (y >= 4 && y <= 6) {
dateString = x + "-" + "06" + "-" + "30";
}
if (y >= 7 && y <= 9) {
dateString = x + "-" + "09" + "-" + "30";
}
if (y >= 10 && y <= 12) {
dateString = x + "-" + "12" + "-" + "31";
}
return dateString;
}
/**
* ： ：xxxx-yy-zz (eg: 2007-01-01)<br>
* @return String
* @author pure
*/
public String thisYear() {
x = localTime.get(Calendar.YEAR);
return x + "-01" + "-01";
}
/**
* ： ：xxxx-yy-zz (eg: 2007-12-31)<br>
* @return String
* @author pure
*/
public String thisYearEnd() {
x = localTime.get(Calendar.YEAR);
return x + "-12" + "-31";
}
/**
* ： <br>
*
* @param year
* @return ：true ：false
* @author pure
*/
public boolean leapYear(int year) {
boolean leap;
if (year % 4 == 0) {
if (year % 100 == 0) {
if (year % 400 == 0) leap = true;
else leap = false;
}
else leap = true;
}
else leap = false;
return leap;
}
}