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@@ -89,9 +89,8 @@ Period period = Period.between(l1.toLocalDate(), l2.toLocalDate());
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Joda time:
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```
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-DateTime dt = <span class="hljs-keyword">new</span> DateTime();
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+DateTime dt = new DateTime();
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Chronology chronology = dt.getChronology();
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-<span class="copy-code-btn">复制代码</span>
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```
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Java time:
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@@ -99,7 +98,6 @@ Java time:
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```
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LocalDateTime localDateTime = LocalDateTime.now();
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Chronology ch = localDateTime.getChronology();
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-<span class="copy-code-btn">复制代码</span>
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```
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表示时区。
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@@ -107,10 +105,9 @@ Chronology ch = localDateTime.getChronology();
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Joda time:
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```
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-DateTime dt = <span class="hljs-keyword">new</span> DateTime();
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+DateTime dt = new DateTime();
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DateTimeZone dateTimeZone = dt.getZone();
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Set<string> zones = DateTimeZone.getAvailableIDs();
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-<span class="copy-code-btn">复制代码</span></string>
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```
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Java time:
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@@ -119,7 +116,6 @@ Java time:
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Clock clock = Clock.systemDefaultZone();
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ZoneId zoneId = clock.getZone();
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Set<string> zones = ZoneId.getAvailableZoneIds();
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-<span class="copy-code-btn">复制代码</span></string>
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```
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从上面可以看到，除了 JSR-310 中没有的 Interval 的定义之外，这两个库在基础概念方面的实现相差不大。
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@@ -144,16 +140,14 @@ Joda time:
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```
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DateTime dt = <span class="hljs-keyword">new</span> DateTime();
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-<span class="hljs-keyword">long</span> mills = dt.getMillis();
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-<span class="copy-code-btn">复制代码</span>
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+long mills = dt.getMillis();
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```
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Java time:
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```
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Clock clock = Clock.systemDefaultZone();
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-<span class="hljs-keyword">long</span> mills = clock.millis();
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-<span class="copy-code-btn">复制代码</span>
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+long mills = clock.millis();
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```
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这块两个库没有太大的差异：
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@@ -161,27 +155,24 @@ Clock clock = Clock.systemDefaultZone();
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Joda time:
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```
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-DateTime dt = <span class="hljs-keyword">new</span> DateTime();
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+DateTime dt = new DateTime();
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LocalDateTime localDateTime = dt.toLocalDateTime();
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-<span class="copy-code-btn">复制代码</span>
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```
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Java time:
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```
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LocalDateTime localDateTime = LocalDateTime.now();
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-<span class="copy-code-btn">复制代码</span>
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```
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Joda time:
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```
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-DateTime dt = <span class="hljs-keyword">new</span> DateTime();
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-<span class="hljs-keyword">int</span> dayOfYear = dt.getDayOfYear();
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-<span class="hljs-keyword">int</span> dayOfMonth = dt.getDayOfMonth();
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-<span class="hljs-keyword">int</span> dayOfWeek = dt.getDayOfWeek();
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-<span class="hljs-keyword">int</span> hourOfDay = dt.getHourOfDay();
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-<span class="copy-code-btn">复制代码</span>
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+DateTime dt = new DateTime();
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+int dayOfYear = dt.getDayOfYear();
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+int dayOfMonth = dt.getDayOfMonth();
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+int dayOfWeek = dt.getDayOfWeek();
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+int hourOfDay = dt.getHourOfDay();
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```
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Java time:
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@@ -189,37 +180,35 @@ Java time:
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```
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Clock clock = Clock.systemDefaultZone();
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LocalDateTime localDateTime = LocalDateTime.now(clock);
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-<span class="hljs-keyword">int</span> dayOfYear = localDateTime.getDayOfYear();
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-<span class="hljs-keyword">int</span> dayOfMonth = localDateTime.getDayOfMonth();
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-<span class="hljs-keyword">int</span> dayOfWeek = localDateTime.getDayOfWeek().getValue();
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-<span class="hljs-keyword">int</span> hourOfDay = localDateTime.getHour();
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-<span class="copy-code-btn">复制代码</span>
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+int dayOfYear = localDateTime.getDayOfYear();
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+int dayOfMonth = localDateTime.getDayOfMonth();
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+int dayOfWeek = localDateTime.getDayOfWeek().getValue();
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+int hourOfDay = localDateTime.getHour();
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```
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-获取这些值两个库也没有太大的差异，但是对于一些场景，比如我想获得 "星期四" 这个字符串。 在 Joda 库中，可以 `dt.dayOfWeek().getAsShortText(); // 星期四` 这样获得。在 Java 中， `localDateTime.getDayOfWeek().name(); //THURSDAY` 只能获取到英文。
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+获取这些值两个库也没有太大的差异，但是对于一些场景，比如我想获得 "星期四" 这个字符串。 在 Joda 库中，可以 `dt.dayOfWeek().getAsShortText(); // 这样获得。
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+在 Java 中， `localDateTime.getDayOfWeek().name(); //THURSDAY` 只能获取到英文。
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Joda time 在本地化方面比 Java time做的更好。
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Joda time:
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```
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-DateTime dt = <span class="hljs-keyword">new</span> DateTime();
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-dt = dt.plusDays(<span class="hljs-number">2</span>);
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-dt = dt.plusHours(<span class="hljs-number">5</span>);
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-dt = dt.minusDays(<span class="hljs-number">1</span>);
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-dt = dt.minusHours(<span class="hljs-number">2</span>);
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-<span class="copy-code-btn">复制代码</span>
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+DateTime dt = new DateTime();
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+dt = dt.plusDays(2);
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+dt = dt.plusHours(5);
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+dt = dt.minusDays(1);
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+dt = dt.minusHours(2);
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```
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Java time:
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```
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LocalDateTime localDateTime = LocalDateTime.now();
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-localDateTime = localDateTime.plusDays(<span class="hljs-number">2</span>);
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-localDateTime = localDateTime.plusHours(<span class="hljs-number">2</span>);
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-localDateTime = localDateTime.minusDays(<span class="hljs-number">1</span>);
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-localDateTime = localDateTime.minusHours(<span class="hljs-number">1</span>);
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-<span class="copy-code-btn">复制代码</span>
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+localDateTime = localDateTime.plusDays(2);
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+localDateTime = localDateTime.plusHours(2);
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+localDateTime = localDateTime.minusDays(1);
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+localDateTime = localDateTime.minusHours(1);
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```
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日期格式化是日常使用最频繁的功能，下面来对比一下这两者的区别。
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@@ -228,21 +217,20 @@ Joda time:
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```
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-DateTimeFormatter formatter = DateTimeFormat.forPattern(<span class="hljs-string">"yyyy-MM-dd HH:mm:ss"</span>);
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-DateTime dt = <span class="hljs-keyword">new</span> DateTime();
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+DateTimeFormatter formatter = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss");
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+DateTime dt = new DateTime();
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System.out.println(dt.toString(formatter));
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-String dateFormat = <span class="hljs-string">"yyyy-MM-dd HH:mm:ss"</span>;
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+String dateFormat = "yyyy-MM-dd HH:mm:ss";
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System.out.println(dt.toString(dateFormat));
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-<span class="copy-code-btn">复制代码</span>
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```
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Java time:
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```
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-DateTimeFormatter formatter = DateTimeFormatter.ofPattern(<span class="hljs-string">"yyyy-MM-dd HH:mm:ss"</span>);
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-LocalDateTime localDateTime = LocalDateTime.now(); System.out.println(formatter.format(localDateTime));
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-<span class="copy-code-btn">复制代码</span>
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+DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
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+LocalDateTime localDateTime = LocalDateTime.now();
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+System.out.println(formatter.format(localDateTime));
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```
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通过上面的对比，可以发现这两个类库都可以完成相同的功能。虽然在细节上是有一些细微的差别。
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@@ -256,9 +244,8 @@ Java time 与 java.util 下的时间类相互转化，可以将 Date 或者 Cale
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java.util.Date 转 java.time.LocalDateTime:
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```
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-Date date = <span class="hljs-keyword">new</span> Date();
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+Date date = new Date();
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LocalDateTime localDateTime = LocalDateTime.ofInstant(date.toInstant(), ZoneId.systemDefault());
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-<span class="copy-code-btn">复制代码</span>
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```
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java.util.Carlendar 转 java.time.LocalDateTime:
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@@ -266,28 +253,26 @@ java.util.Carlendar 转 java.time.LocalDateTime:
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```
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Calendar calendar = Calendar.getInstance();
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LocalDateTime localDateTime = LocalDateTime.ofInstant(calendar.toInstant(), ZoneId.systemDefault());
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-<span class="copy-code-btn">复制代码</span>
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```
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Joda time 也可以与 java.util.Date 可以进行相互的转化：
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```
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-DateTime dt = <span class="hljs-keyword">new</span> DateTime();
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+DateTime dt = new DateTime();
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Date jdkDate = dt.toDate();
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-dt = <span class="hljs-keyword">new</span> DateTime(jdkDate);
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+dt = new DateTime(jdkDate);
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-DateTime dt = <span class="hljs-keyword">new</span> DateTime();
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+DateTime dt = new DateTime();
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Calendar jdkCal = dt.toCalendar(Locale.CHINESE);
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-dt = <span class="hljs-keyword">new</span> DateTime(jdkCal);
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+dt = new DateTime(jdkCal);
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-DateTime dt = <span class="hljs-keyword">new</span> DateTime();
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+DateTime dt = new DateTime();
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GregorianCalendar jdkGCal = dt.toGregorianCalendar();
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-dt = <span class="hljs-keyword">new</span> DateTime(jdkGCal);
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-<span class="copy-code-btn">复制代码</span>
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+dt = new DateTime(jdkGCal);
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```
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## 设计思想
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