1 package vivi.test;
2
3 import java.util.Calendar;
4
5 /**
6 *
7 * 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
8 * 1、得到当前日期 today()
9 * 2、得到当前月份月初 thisMonth()
10 * 3、得到当前月份月底 thisMonthEnd()
11 * 4、得到当前季度季初 thisSeason()
12 * 5、得到当前季度季末 thisSeasonEnd()
13 * 6、得到当前年份年初 thisYear()
14 * 7、得到当前年份年底 thisYearEnd()
15 * 8、判断输入年份是否为闰年 leapYear
16 *
17 * 注意事项: 日期格式为：xxxx-yy-zz (eg: 2007-12-05)
18 *
19 * 实例:
20 *
21 * @author pure
22 */
23 public class Test {
24
25 private int x; // 日期属性：年
26
27 private int y; // 日期属性：月
28
29 private int z; // 日期属性：日
30
31 private Calendar localTime; // 当前日期
32
33 public Test() {
34 localTime = Calendar.getInstance();
35 }
36 public static void main(String[] args){
37 Test test = new Test();
38 test.today();
39 }
40
41
42 /**
43 * 功能：得到当前日期 格式为：xxxx-yy-zz (eg: 2007-12-05)
44 * @return String
45 * @author pure
46 */
47 public String today() {
48 String strY = null;
49 String strZ = null;
50 x = localTime.get(Calendar.YEAR);
51 y = localTime.get(Calendar.MONTH) + 1;
52 z = localTime.get(Calendar.DATE);
53 strY = y >= 10 ? String.valueOf(y) : ("0" + y);
54 strZ = z >= 10 ? String.valueOf(z) : ("0" + z);
55 return x + "-" + strY + "-" + strZ;
56 }
57
58 /**
59 * 功能：得到当前月份月初 格式为：xxxx-yy-zz (eg: 2007-12-01)
60 * @return String
61 * @author pure
62 */
63 public String thisMonth() {
64 String strY = null;
65 x = localTime.get(Calendar.YEAR);
66 y = localTime.get(Calendar.MONTH) + 1;
67 strY = y >= 10 ? String.valueOf(y) : ("0" + y);
68 return x + "-" + strY + "-01";
69 }
70
71 /**
72 * 功能：得到当前月份月底 格式为：xxxx-yy-zz (eg: 2007-12-31)
73 * @return String
74 * @author pure
75 */
76 public String thisMonthEnd() {
77 String strY = null;
78 String strZ = null;
79 boolean leap = false;
80 x = localTime.get(Calendar.YEAR);
81 y = localTime.get(Calendar.MONTH) + 1;
82 if (y == 1 || y == 3 || y == 5 || y == 7 || y == 8 || y == 10 || y == 12) {
83 strZ = "31";
84 }
85 if (y == 4 || y == 6 || y == 9 || y == 11) {
86 strZ = "30";
87 }
88 if (y == 2) {
89 leap = leapYear(x);
90 if (leap) {
91 strZ = "29";
92 }
93 else {
94 strZ = "28";
95 }
96 }
97 strY = y >= 10 ? String.valueOf(y) : ("0" + y);
98 return x + "-" + strY + "-" + strZ;
99 }
100
101 /**
102 * 功能：得到当前季度季初 格式为：xxxx-yy-zz (eg: 2007-10-01)<br>
103 * @return String
104 * @author pure
105 */
106 public String thisSeason() {
107 String dateString = "";
108 x = localTime.get(Calendar.YEAR);
109 y = localTime.get(Calendar.MONTH) + 1;
110 if (y >= 1 && y <= 3) {
111 dateString = x + "-" + "01" + "-" + "01";
112 }
113 if (y >= 4 && y <= 6) {
114 dateString = x + "-" + "04" + "-" + "01";
115 }
116 if (y >= 7 && y <= 9) {
117 dateString = x + "-" + "07" + "-" + "01";
118 }
119 if (y >= 10 && y <= 12) {
120 dateString = x + "-" + "10" + "-" + "01";
121 }
122 return dateString;
123 }
124
125 /**
126 * 功能：得到当前季度季末 格式为：xxxx-yy-zz (eg: 2007-12-31)<br>
127 * @return String
128 * @author pure
129 */
130 public String thisSeasonEnd() {
131 String dateString = "";
132 x = localTime.get(Calendar.YEAR);
133 y = localTime.get(Calendar.MONTH) + 1;
134 if (y >= 1 && y <= 3) {
135 dateString = x + "-" + "03" + "-" + "31";
136 }
137 if (y >= 4 && y <= 6) {
138 dateString = x + "-" + "06" + "-" + "30";
139 }
140 if (y >= 7 && y <= 9) {
141 dateString = x + "-" + "09" + "-" + "30";
142 }
143 if (y >= 10 && y <= 12) {
144 dateString = x + "-" + "12" + "-" + "31";
145 }
146 return dateString;
147 }
148
149 /**
150 * 功能：得到当前年份年初 格式为：xxxx-yy-zz (eg: 2007-01-01)<br>
151 * @return String
152 * @author pure
153 */
154 public String thisYear() {
155 x = localTime.get(Calendar.YEAR);
156 return x + "-01" + "-01";
157 }
158
159 /**
160 * 功能：得到当前年份年底 格式为：xxxx-yy-zz (eg: 2007-12-31)<br>
161 * @return String
162 * @author pure
163 */
164 public String thisYearEnd() {
165 x = localTime.get(Calendar.YEAR);
166 return x + "-12" + "-31";
167 }
168
169 /**
170 * 功能：判断输入年份是否为闰年<br>
171 *
172 * @param year
173 * @return 是：true 否：false
174 * @author pure
175 */
176 public boolean leapYear(int year) {
177 boolean leap;
178 if (year % 4 == 0) {
179 if (year % 100 == 0) {
180 if (year % 400 == 0) leap = true;
181 else leap = false;
182 }
183 else leap = true;
184 }
185 else leap = false;
186 return leap;
187 }
188 }
189