✨ Update Time And Single File

hellokaton · hellokaton · commit 30713dcb3b31 · 2018-08-01T16:39:17.000+08:00
diff --git a/README.md b/README.md
@@ -10,6 +10,8 @@ This repository contains some new feature code after Java8, which runs on top of
 - [processor](src/main/java/io/github/biezhi/java11/processor)
 - [try with resources](src/main/java/io/github/biezhi/java11/trywithresources)
 - [files](src/main/java/io/github/biezhi/java11/files)
+- [time](src/main/java/io/github/biezhi/java11/time)
+- [single file](src/main/java/io/github/biezhi/java11/singlefile)
 
 # License
 
diff --git a/src/main/java/io/github/biezhi/java11/singlefile/HelloWorld.java b/src/main/java/io/github/biezhi/java11/singlefile/HelloWorld.java
@@ -0,0 +1,23 @@
+package io.github.biezhi.java11.singlefile;
+
+/**
+ * 你可以在当前源码的目录下执行
+ * <p>
+ * java HelloWorld.java 运行这个文件的 main 方法
+ *
+ * 该命令相当于
+ *
+ * javac -d <memory> HelloWorld.java
+ * java -cp <memory> HelloWorld
+ *
+ * 该特性来自 <a href="http://openjdk.java.net/jeps/330">JEP330</a>
+ * @author biezhi
+ * @date 2018/8/1
+ */
+public class HelloWorld {
+
+    public static void main(String[] args) {
+        System.out.println("Hello Guys, this is Java 11.");
+    }
+
+}
diff --git a/src/main/java/io/github/biezhi/java11/time/Example.java b/src/main/java/io/github/biezhi/java11/time/Example.java
@@ -0,0 +1,25 @@
+package io.github.biezhi.java11.time;
+
+import java.time.Duration;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Time convert
+ *
+ * @author biezhi
+ * @date 2018/8/1
+ */
+public class Example {
+
+    public static void main(String[] args) {
+        long day = TimeUnit.DAYS.convert(Duration.ofHours(24));
+        System.out.println(day == 1);
+
+        // 1 天
+        System.out.println(TimeUnit.DAYS.convert(Duration.ofHours(26)));
+
+        // 1 分钟
+        System.out.println(TimeUnit.MINUTES.convert(Duration.ofSeconds(60)));
+    }
+
+}
diff --git a/src/main/java/io/github/biezhi/java11/var/Example.java b/src/main/java/io/github/biezhi/java11/var/Example.java
@@ -1,5 +1,7 @@
 package io.github.biezhi.java11.var;
 
+import java.io.File;
+import java.io.FileInputStream;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.util.ArrayList;
@@ -27,9 +29,15 @@ public static void main(String[] args) throws Exception {
 
         System.out.println("字节数组: " + bytes);
 
-        for (var b: bytes) {
+        for (var b : bytes) {
             // TODO
         }
 
+        try (var foo = new FileInputStream(new File(""))) {
+            System.out.println(foo);
+        } catch (Exception e) {
+            // ignore
+        }
+
     }
 }
