1. java 8 time 案例

#bysocket

Author: JeffLi1993

pom.xml

@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 
 	<groupId>org.javacore</groupId>
-	<artifactId>javacore</artifactId>
+	<artifactId>java-core-learning-example</artifactId>
 	<version>0.0.1-SNAPSHOT</version>
 	<build>
 		<plugins>

src/org/javacore/time/DurationTest.java

@@ -0,0 +1,34 @@
+package org.javacore.time;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * 持续时间类 Duration
+ *
+ * Created by bysocket on 16/8/23.
+ */
+public class DurationTest {
+	public static void main(String[] args) throws InterruptedException {
+		Instant start = Instant.now();
+		TimeUnit.SECONDS.sleep(3);
+		Instant end   = Instant.now();
+
+		// 获取持续时间
+		Duration timeElapsed = Duration.between(start,end);
+		System.out.println(timeElapsed.toMillis());// 毫秒
+		System.out.println(timeElapsed.toNanos());// 纳
+
+		Instant start1 = Instant.now();
+		TimeUnit.SECONDS.sleep(2);
+		Instant end1   = Instant.now();
+
+		// 获取持续时间
+		Duration timeElapsed1 = Duration.between(start1,end1);
+
+		// 添加操作
+		Duration all = timeElapsed.plus(timeElapsed1);
+		System.out.println(all.toMillis());// 毫秒
+	}
+}

src/org/javacore/time/InstantTest.java

@@ -0,0 +1,24 @@
+package org.javacore.time;
+
+import java.time.Instant;
+
+/**
+ * 瞬间类 Instant
+ *
+ * Created by bysocket on 16/7/12.
+ */
+public class InstantTest {
+    public static void main(String[] args) {
+        // 获取现在的时间
+        Instant now = Instant.now();
+        System.out.println(now);
+
+        // 1000000000 年 12月 31日
+        Instant max = Instant.MAX;
+        System.out.println(max);
+
+        // 10亿年前
+        Instant min = Instant.MIN;
+        System.out.println(min);
+    }
+}

src/org/javacore/time/LocalDateTest.java

@@ -0,0 +1,29 @@
+package org.javacore.time;
+
+import java.time.LocalDate;
+
+/**
+ * Created by bysocket on 16/8/23.
+ */
+public class LocalDateTest {
+	public static void main(String[] args) {
+		// 今天的日期
+		LocalDate localDate = LocalDate.now();
+
+		System.out.println("今天:" + localDate);
+
+		// 年
+		System.out.println("年:" + localDate.getYear());
+		// 月
+		System.out.println("月:" + localDate.getMonth());
+		System.out.println("月:" + localDate.getMonth());
+		// 星期
+		System.out.println("今天是星期" + localDate.getDayOfWeek());
+
+		// 距离
+		// 年
+		System.out.println("今天是今年的第" + localDate.getDayOfYear() + "天");
+		// 月
+		System.out.println("今天是这个月的第" + localDate.getDayOfMonth() + "天");
+	}
+}

src/org/javacore/time/LocalDateTest1.java

@@ -0,0 +1,18 @@
+package org.javacore.time;
+
+import java.time.LocalDate;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Created by bysocket on 16/8/23.
+ */
+public class LocalDateTest1 {
+	public static void main(String[] args) throws InterruptedException {
+		LocalDate start = LocalDate.now();
+		TimeUnit.SECONDS.sleep(3);
+		LocalDate end   = LocalDate.now();
+
+		System.out.println(start.isAfter(end));
+		System.out.println(start.isBefore(end));
+	}
+}

src/org/javacore/time/LocalDateTest2.java

@@ -0,0 +1,17 @@
+package org.javacore.time;
+
+import java.time.LocalDate;
+
+/**
+ * 计算BYSocket的生日是今年的第几天
+ *
+ * Created by bysocket on 16/8/23.
+ */
+public class LocalDateTest2 {
+	public static void main(String[] args) {
+		LocalDate birthdayDate = LocalDate.of(2016,5,2);
+		System.out.println("BYSocket的生日是今年的第" + birthdayDate.getDayOfYear() + "天");
+		// 明年的生日
+		System.out.println(birthdayDate.plusYears(1));
+	}
+}