增加ByteArrayOutputStream例子

byhieg · byhieg · commit 39249f096230 · 2017-02-23T10:24:57.000+08:00
diff --git a/src/main/java/cn/byhieg/annotationstutorial/AMethodProcess.java b/src/main/java/cn/byhieg/annotationstutorial/AMethodProcess.java
@@ -1,6 +1,5 @@
 package cn.byhieg.annotationstutorial;
 
-import sun.jvm.hotspot.runtime.amd64.AMD64CurrentFrameGuess;
 
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
diff --git a/src/main/java/cn/byhieg/collectiontutorial/listtutorial/SimpleLinkedList.java b/src/main/java/cn/byhieg/collectiontutorial/listtutorial/SimpleLinkedList.java
@@ -1,7 +1,5 @@
 package cn.byhieg.collectiontutorial.listtutorial;
 
-import apple.laf.JRSUIFocus;
-
 /**
  * Created by byhieg on 17/2/15.
  * Mail to byhieg@gmail.com
diff --git a/src/main/java/cn/byhieg/iotutorial/bytestreamio/ByteArrayOutPutStreamExample.java b/src/main/java/cn/byhieg/iotutorial/bytestreamio/ByteArrayOutPutStreamExample.java
@@ -0,0 +1,27 @@
+package cn.byhieg.iotutorial.bytestreamio;
+
+import java.io.ByteArrayOutputStream;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.InputStream;
+
+/**
+ * Created by shiqifeng on 2017/2/23.
+ * Mail byhieg@gmail.com
+ */
+public class ByteArrayOutPutStreamExample {
+
+    public void writeFromFile() throws Exception {
+        try (InputStream is = new FileInputStream("D://read_file.txt")) {
+            ByteArrayOutputStream output = new ByteArrayOutputStream();
+            byte[] bytes = new byte[1024];
+            while (is.read(bytes) != -1) {
+                output.write(bytes);
+            }
+
+            String data = output.toString("UTF-8");
+            System.out.println(data);
+
+        }
+    }
+}
diff --git a/src/main/java/cn/byhieg/iotutorial/bytestreamio/write_file.txt b/src/main/java/cn/byhieg/iotutorial/bytestreamio/write_file.txt
diff --git a/src/test/java/cn/byhieg/iotutorialtest/ByteArrayOutPutStreamExampleTest.java b/src/test/java/cn/byhieg/iotutorialtest/ByteArrayOutPutStreamExampleTest.java
@@ -0,0 +1,15 @@
+package cn.byhieg.iotutorialtest;
+
+import cn.byhieg.iotutorial.bytestreamio.ByteArrayOutPutStreamExample;
+import junit.framework.TestCase;
+
+/**
+ * Created by shiqifeng on 2017/2/23.
+ * Mail byhieg@gmail.com
+ */
+public class ByteArrayOutPutStreamExampleTest extends TestCase {
+    public void testWriteFromFile() throws Exception {
+        new ByteArrayOutPutStreamExample().writeFromFile();
+    }
+
+}
