Java用于取得当前日期相对应的月初，月末，季初，季末，年初，年末时间，季初年末,package com.
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Java用于取得当前日期相对应的月初，月末，季初，季末，年初，年末时间，季初年末,package com.
package com.zrar.date;import java.util.Calendar;/** * * 描述:此类用于取得当前日期相对应的月初，月末，季初，季末，年初，年末，返回值均为String字符串 * 1、得到当前日期 today() * 2、得到当前月份月初 thisMonth() * 3、得到当前月份月底 thisMonthEnd() * 4、得到当前季度季初 thisSeason() * 5、得到当前季度季末 thisSeasonEnd() * 6、得到当前年份年初 thisYear() * 7、得到当前年份年底 thisYearEnd() * 8、判断输入年份是否为闰年 leapYear * * 注意事项: 日期格式为：xxxx-yy-zz (eg: 2007-12-05) * * 实例: * * @author pure */public class DateThis { private int x; // 日期属性：年 private int y; // 日期属性：月 private int z; // 日期属性：日 private Calendar localTime; // 当前日期 public DateThis() { localTime = Calendar.getInstance(); } /** * 功能：得到当前日期 格式为：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; } /** * 功能：得到当前月份月初 格式为：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"; } /** * 功能：得到当前月份月底 格式为：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; } /** * 功能：得到当前季度季初 格式为：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; } /** * 功能：得到当前季度季末 格式为：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; } /** * 功能：得到当前年份年初 格式为：xxxx-yy-zz (eg: 2007-01-01)<br> * @return String * @author pure */ public String thisYear() { x = localTime.get(Calendar.YEAR); return x + "-01" + "-01"; } /** * 功能：得到当前年份年底 格式为：xxxx-yy-zz (eg: 2007-12-31)<br> * @return String * @author pure */ public String thisYearEnd() { x = localTime.get(Calendar.YEAR); return x + "-12" + "-31"; } /** * 功能：判断输入年份是否为闰年<br> * * @param year * @return 是：true 否：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; }}
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