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

01.package vivi.test;

02.

03.import java.util.Calendar;

04./**

05. *

06. * 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

07. * 1、得到当前日期 today()

08. * 2、得到当前月份月初 thisMonth()

09. * 3、得到当前月份月底 thisMonthEnd()

10. * 4、得到当前季度季初 thisSeason()

11. * 5、得到当前季度季末 thisSeasonEnd()

12. * 6、得到当前年份年初 thisYear()

13. * 7、得到当前年份年底 thisYearEnd()

14. * 8、判断输入年份是否为闰年 leapYear

15. * 注意事项: 日期格式为：xxxx-yy-zz (eg: 2007-12-05)

16. * 实例:

17. * @author pure

18. */

19.public class Test {

20. private int x; // 日期属性：年

21. private int y; // 日期属性：月

22. private int z; // 日期属性：日

23. private Calendar localTime; // 当前日期

24.

25. public Test() {

26. localTime = Calendar.getInstance();

27. }

28.

29. public static void main(String[] args){

30. Test test = new Test();

31. test.today();

32. }

33. /**

34. * 功能：得到当前日期 格式为：xxxx-yy-zz (eg: 2007-12-05)

35. * @return String

36. * @author pure

37. */

38. public String today() {

39. String strY = null;

40. String strZ = null;

41. x = localTime.get(Calendar.YEAR);

42. y = localTime.get(Calendar.MONTH) + 1;

43. z = localTime.get(Calendar.DATE);

44. strY = y >= 10 ? String.valueOf(y) : ("0" + y);

45. strZ = z >= 10 ? String.valueOf(z) : ("0" + z);

46. return x + "-" + strY + "-" + strZ;

47. }

48. /**

49. * 功能：得到当前月份月初 格式为：xxxx-yy-zz (eg: 2007-12-01)

50. * @return String

51. * @author pure

52. */

53. public String thisMonth() {

54. String strY = null;

55. x = localTime.get(Calendar.YEAR);

56. y = localTime.get(Calendar.MONTH) + 1;

57. strY = y >= 10 ? String.valueOf(y) : ("0" + y);return x + "-" + strY + "-01";

58. }

59. /**

60. * 功能：得到当前月份月底 格式为：xxxx-yy-zz (eg: 2007-12-31)

61. * @return String

62. * @author pure

63. **/

64. public String thisMonthEnd() {

65. String strY = null;

66. String strZ = null;

67. boolean leap = false;

68. x = localTime.get(Calendar.YEAR);

69. y = localTime.get(Calendar.MONTH) + 1;

70. if (y == 1 || y == 3 || y == 5 || y == 7 || y == 8 || y == 10 || y == 12) {

71. strZ = "31";

72. }

73. if (y == 4 || y == 6 || y == 9 || y == 11) {

74. strZ = "30";

75. }

76. if (y == 2) {

77. leap = leapYear(x);

78. if (leap) {

79. strZ = "29";

80. }else {

81. strZ = "28";

82. }

83. }

84. strY = y >= 10 ? String.valueOf(y) : ("0" + y);

85. return x + "-" + strY + "-" + strZ;

86. }

87.

88. /**

89. * 功能：得到当前季度季初 格式为：xxxx-yy-zz (eg: 2007-10-01)<br>

90. * @return String

91. * @author pure

92. */

93. public String thisSeason() {

94. String dateString = "";

95. x = localTime.get(Calendar.YEAR);

96. y = localTime.get(Calendar.MONTH) + 1;

97. if (y >= 1 && y <= 3) {

98. dateString = x + "-" + "01" + "-" + "01";

99. }

100. if (y >= 4 && y <= 6) {

101. dateString = x + "-" + "04" + "-" + "01";

102. }

103. if (y >= 7 && y <= 9) {

104. dateString = x + "-" + "07" + "-" + "01";

105. }

106. if (y >= 10 && y <= 12) {

107. dateString = x + "-" + "10" + "-" + "01";

108. }

109. return dateString;

110. }

111.

112. /**

113. * 功能：得到当前季度季末 格式为：xxxx-yy-zz (eg: 2007-12-31)<br>

114. * @return String

115. * @author pure

116. */

117. public String thisSeasonEnd() {

118. String dateString = "";

119. x = localTime.get(Calendar.YEAR);

120. y = localTime.get(Calendar.MONTH) + 1;

121. if (y >= 1 && y <= 3) {

122. dateString = x + "-" + "03" + "-" + "31";

123. }

124. if (y >= 4 && y <= 6) {

125. dateString = x + "-" + "06" + "-" + "30";

126. }

127. if (y >= 7 && y <= 9) {

128. dateString = x + "-" + "09" + "-" + "30";

129. }

130. if (y >= 10 && y <= 12) {

131. dateString = x + "-" + "12" + "-" + "31";

132. }

133. return dateString;

134. }

135.

136. /**

137. * 功能：得到当前年份年初 格式为：xxxx-yy-zz (eg: 2007-01-01)<br>

138. * @return String

139. * @author pure

140. */

141. public String thisYear() {

142. x = localTime.get(Calendar.YEAR);

143. return x + "-01" + "-01";

144. }

145.

146. /**

147. * 功能：得到当前年份年底 格式为：xxxx-yy-zz (eg: 2007-12-31)<br>

148. * @return String

149. * @author pure

150. */

151. public String thisYearEnd() {

152. x = localTime.get(Calendar.YEAR);

153. return x + "-12" + "-31";

154. }

155.

156. /**

157. * 功能：判断输入年份是否为闰年<br>

158. * @param year

159. * @return 是：true 否：false

160. * @author pure

161. */

162. public boolean leapYear(int year) {

163. boolean leap;

164. if (year % 4 == 0) {

165. if (year % 100 == 0) {

166. if (year % 400 == 0) leap = true;

167. else leap = false;

168. }

169. else leap = true;

170. }

171. else leap = false;

172. return leap;

173. }

174.}