Java获取各种常用时间方法2

1.       
2.     // 获得下周星期一的日期  
3.     public String getNextMonday() {  
4.          weeks++;  
5.         int mondayPlus = this.getMondayPlus();  
6.          GregorianCalendar currentDate = new GregorianCalendar();  
7.          currentDate.add(GregorianCalendar.DATE, mondayPlus + 7);  
8.          Date monday = currentDate.getTime();  
9.          DateFormat df = DateFormat.getDateInstance();  
10.          String preMonday = df.format(monday);  
11.         return preMonday;  
12.      }  
13.       
14. // 获得下周星期日的日期  
15.     public String getNextSunday() {  
16.           
17.         int mondayPlus = this.getMondayPlus();  
18.          GregorianCalendar currentDate = new GregorianCalendar();  
19.          currentDate.add(GregorianCalendar.DATE, mondayPlus + 7+6);  
20.          Date monday = currentDate.getTime();  
21.          DateFormat df = DateFormat.getDateInstance();  
22.          String preMonday = df.format(monday);  
23.         return preMonday;  
24.      }  
25.       
26.       
27.       
28.     private int getMonthPlus(){  
29.          Calendar cd = Calendar.getInstance();  
30.         int monthOfNumber = cd.get(Calendar.DAY_OF_MONTH);  
31.          cd.set(Calendar.DATE, 1);//把日期设置为当月第一天   
32.          cd.roll(Calendar.DATE, -1);//日期回滚一天，也就是最后一天   
33.          MaxDate=cd.get(Calendar.DATE);   
34.         if(monthOfNumber == 1){  
35.             return -MaxDate;  
36.          }else{  
37.             return 1-monthOfNumber;  
38.          }  
39.      }  
40.       
41.   //获得上月最后一天的日期  
42.     public String getPreviousMonthEnd(){  
43.          String str = "";  
44.         SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");      
45.   
46.         Calendar lastDate = Calendar.getInstance();  
47.        lastDate.add(Calendar.MONTH,-1);//减一个月  
48.        lastDate.set(Calendar.DATE, 1);//把日期设置为当月第一天   
49.        lastDate.roll(Calendar.DATE, -1);//日期回滚一天，也就是本月最后一天   
50.         str=sdf.format(lastDate.getTime());  
51.        return str;    
52.      }  
53.       
54.   //获得下个月第一天的日期  
55.     public String getNextMonthFirst(){  
56.          String str = "";  
57.         SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");      
58.   
59.         Calendar lastDate = Calendar.getInstance();  
60.        lastDate.add(Calendar.MONTH,1);//减一个月  
61.        lastDate.set(Calendar.DATE, 1);//把日期设置为当月第一天   
62.         str=sdf.format(lastDate.getTime());  
63.        return str;    
64.      }  
65.       
66.   //获得下个月最后一天的日期  
67.     public String getNextMonthEnd(){  
68.          String str = "";  
69.         SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");      
70.   
71.         Calendar lastDate = Calendar.getInstance();  
72.        lastDate.add(Calendar.MONTH,1);//加一个月  
73.        lastDate.set(Calendar.DATE, 1);//把日期设置为当月第一天   
74.        lastDate.roll(Calendar.DATE, -1);//日期回滚一天，也就是本月最后一天   
75.         str=sdf.format(lastDate.getTime());  
76.        return str;    
77.      }  
78.       
79.     //获得明年最后一天的日期  
80.     public String getNextYearEnd(){  
81.          String str = "";  
82.         SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");      
83.   
84.        Calendar lastDate = Calendar.getInstance();  
85.        lastDate.add(Calendar.YEAR,1);//加一个年  
86.        lastDate.set(Calendar.DAY_OF_YEAR, 1);  
87.       lastDate.roll(Calendar.DAY_OF_YEAR, -1);  
88.         str=sdf.format(lastDate.getTime());  
89.        return str;    
90.      }  
91.       
92.   //获得明年第一天的日期  
93.     public String getNextYearFirst(){  
94.          String str = "";  
95.         SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");      
96.   
97.        Calendar lastDate = Calendar.getInstance();  
98.        lastDate.add(Calendar.YEAR,1);//加一个年  
99.        lastDate.set(Calendar.DAY_OF_YEAR, 1);  
100.             str=sdf.format(lastDate.getTime());  
101.       return str;    
102.           
103.      }  
104.       
105.   //获得本年有多少天  
106.     private int getMaxYear(){  
107.          Calendar cd = Calendar.getInstance();  
108.          cd.set(Calendar.DAY_OF_YEAR,1);//把日期设为当年第一天  
109.          cd.roll(Calendar.DAY_OF_YEAR,-1);//把日期回滚一天。  
110.         int MaxYear = cd.get(Calendar.DAY_OF_YEAR);   
111.         return MaxYear;  
112.      }  
113.       
114.     private int getYearPlus(){  
115.          Calendar cd = Calendar.getInstance();  
116.         int yearOfNumber = cd.get(Calendar.DAY_OF_YEAR);//获得当天是一年中的第几天  
117.          cd.set(Calendar.DAY_OF_YEAR,1);//把日期设为当年第一天  
118.          cd.roll(Calendar.DAY_OF_YEAR,-1);//把日期回滚一天。  
119.         int MaxYear = cd.get(Calendar.DAY_OF_YEAR);  
120.         if(yearOfNumber == 1){  
121.             return -MaxYear;  
122.          }else{  
123.             return 1-yearOfNumber;  
124.          }  
125.      }  
126.   //获得本年第一天的日期  
127.     public String getCurrentYearFirst(){  
128.         int yearPlus = this.getYearPlus();  
129.          GregorianCalendar currentDate = new GregorianCalendar();  
130.          currentDate.add(GregorianCalendar.DATE,yearPlus);  
131.          Date yearDay = currentDate.getTime();  
132.          DateFormat df = DateFormat.getDateInstance();  
133.          String preYearDay = df.format(yearDay);  
134.         return preYearDay;  
135.      }  
136.       
137.       
138.   //获得本年最后一天的日期 *  
139.     public String getCurrentYearEnd(){  
140.          Date date = new Date();  
141.          SimpleDateFormat    dateFormat    =   new    SimpleDateFormat("yyyy");//可以方便地修改日期格式     
142.          String   years   = dateFormat.format(date);     
143.         return years+"-12-31";  
144.      }  
145.       
146.       
147.   //获得上年第一天的日期 *  
148.     public String getPreviousYearFirst(){  
149.          Date date = new Date();  
150.          SimpleDateFormat    dateFormat    =   new    SimpleDateFormat("yyyy");//可以方便地修改日期格式     
151.          String   years   = dateFormat.format(date); int years_value = Integer.parseInt(years);    
152.          years_value--;  
153.         return years_value+"-1-1";  
154.      }  
155.       
156.   //获得上年最后一天的日期  
157.     public String getPreviousYearEnd(){  
158.          weeks--;  
159.         int yearPlus = this.getYearPlus();  
160.          GregorianCalendar currentDate = new GregorianCalendar();  
161.          currentDate.add(GregorianCalendar.DATE,yearPlus+MaxYear*weeks+(MaxYear-1));  
162.          Date yearDay = currentDate.getTime();  
163.          DateFormat df = DateFormat.getDateInstance();  
164.          String preYearDay = df.format(yearDay);  
165.          getThisSeasonTime(11);  
166.         return preYearDay;  
167.      }  
168.       
169.   //获得本季度  
170.     public String getThisSeasonTime(int month){  
171.         int array[][] = {{1,2,3},{4,5,6},{7,8,9},{10,11,12}};  
172.         int season = 1;  
173.         if(month>=1&&month<=3){  
174.              season = 1;  
175.          }  
176.         if(month>=4&&month<=6){  
177.              season = 2;  
178.          }  
179.         if(month>=7&&month<=9){  
180.              season = 3;  
181.          }  
182.         if(month>=10&&month<=12){  
183.              season = 4;  
184.          }  
185.         int start_month = array[season-1][0];  
186.         int end_month = array[season-1][2];  
187.           
188.          Date date = new Date();  
189.          SimpleDateFormat    dateFormat    =   new    SimpleDateFormat("yyyy");//可以方便地修改日期格式     
190.          String   years   = dateFormat.format(date);     
191.         int years_value = Integer.parseInt(years);  
192.           
193.         int start_days =1;//years+"-"+String.valueOf(start_month)+"-1";//getLastDayOfMonth(years_value,start_month);  
194.         int end_days = getLastDayOfMonth(years_value,end_month);  
195.          String seasonDate = years_value+"-"+start_month+"-"+start_days+";"+years_value+"-"+end_month+"-"+end_days;  
196.         return seasonDate;  
197.           
198.      }  
199.       
200.     /**
201.       * 获取某年某月的最后一天
202.       * @param year 年
203.       * @param month 月
204.       * @return 最后一天
205.       */  
206.    private int getLastDayOfMonth(int year, int month) {  
207.          if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8  
208.                     || month == 10 || month == 12) {  
209.                return 31;  
210.           }  
211.          if (month == 4 || month == 6 || month == 9 || month == 11) {  
212.                return 30;  
213.           }  
214.          if (month == 2) {  
215.                if (isLeapYear(year)) {  
216.                    return 29;  
217.                 } else {  
218.                    return 28;  
219.                 }  
220.           }  
221.          return 0;  
222.     }  
223.    /**
224.      * 是否闰年
225.      * @param year 年
226.      * @return
227.      */  
228.   public boolean isLeapYear(int year) {  
229.         return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);  
230.    }  
231. }