回答編集履歴
4
Calendarのまま判定する方法
test
CHANGED
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@@ -135,3 +135,55 @@
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}
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```
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138
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+
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141
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今更追加(17/09/17)。
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142
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143
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- 日付比較するメソッドを作る
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144
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145
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```java
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146
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public boolean getFlg() throws ParseException {
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150
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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Date startDate = sdf.parse("2007-01-01");
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Date endDate = sdf.parse("2017-05-26");
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Calendar from = Calendar.getInstance(),
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160
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today = Calendar.getInstance(),
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to = Calendar.getInstance();
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164
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from.setTime(startDate);
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166
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to.setTime(endDate);
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168
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169
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170
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return compareByDate(from, today) <= 0 && compareByDate(today, to) <= 0;
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}
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public static int compareByDate(Calendar c1, Calendar c2) {
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178
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int i = Integer.compare(c1.get(Calendar.YEAR), c2.get(Calendar.YEAR));
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180
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if (i != 0) return i;
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182
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return Integer.compare(c1.get(Calendar.DAY_OF_YEAR), c2.get(Calendar.DAY_OF_YEAR));
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184
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185
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}
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186
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```
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3
修正
test
CHANGED
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@@ -38,7 +38,7 @@
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38
38
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40
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-
return diff1 >= 0 && diff2 >
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+
return diff1 >= 0 && diff2 > 0;
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}
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@@ -64,7 +64,7 @@
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64
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65
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66
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-
return startDate <= now && now <
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67
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+
return startDate <= now && now < endDate;
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68
68
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69
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}
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70
70
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2
現在時刻関係のDateの処理が意味なかったので削除
test
CHANGED
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@@ -16,8 +16,6 @@
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16
16
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17
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Date endDate = sdf.parse("2017-05-26");
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18
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-
Date now = new Date();
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-
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Calendar from = Calendar.getInstance(),
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@@ -27,8 +25,6 @@
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to = Calendar.getInstance();
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26
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from.setTime(startDate);
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30
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-
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-
today.setTime(now);
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28
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to.setTime(endDate);
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34
30
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1
不要な例外宣言を削除、方法をもう一つ追加\(long値比較\)
test
CHANGED
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@@ -48,13 +48,43 @@
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48
48
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```
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50
50
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51
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52
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53
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- getTime()で得られるlong値で比較。その際に終了日時のほうに1日相当のミリ秒を加算する
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54
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55
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```java
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56
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57
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public boolean getFlg() throws ParseException {
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58
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59
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60
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61
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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62
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63
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long startDate = sdf.parse("2007-01-01").getTime();
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64
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65
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long endDate = sdf.parse("2017-05-26").getTime() + 24L * 60L * 60L * 1000L;
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66
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long now = new Date().getTime();
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68
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70
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return startDate <= now && now <= endDate;
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}
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74
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75
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```
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76
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77
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78
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79
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80
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+
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51
81
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- 逆転の発想。文字列に変換して比較する
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52
82
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53
83
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日付の後先と文字列化した日付の後先は一致する
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54
84
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55
85
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```java
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56
86
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57
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-
public boolean getFlg()
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87
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+
public boolean getFlg() {
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58
88
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59
89
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60
90
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@@ -86,7 +116,7 @@
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86
116
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87
117
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```java
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88
118
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89
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-
public boolean getFlg()
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119
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+
public boolean getFlg() {
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90
120
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91
121
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92
122
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