inputStream.transferTo in Java 9

thangpt2019 · thangpt2019 · commit 465374aa7c0a · 2017-10-01T20:51:11.000+07:00
diff --git a/java9-language-features-examples/src/test/java/com/howtoprogram/io/InputStreamTransferToTest.java b/java9-language-features-examples/src/test/java/com/howtoprogram/io/InputStreamTransferToTest.java
@@ -0,0 +1,58 @@
+package com.howtoprogram.io;
+
+import org.junit.jupiter.api.Test;
+
+import java.io.*;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class InputStreamTransferToTest {
+
+    @Test
+    public void testTransferTo() throws IOException {
+
+        ByteArrayInputStream bis = new ByteArrayInputStream("Hello".getBytes());
+        ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        try {
+
+
+            long count = bis.transferTo(bos);
+
+            byte[] bytes = bos.toByteArray();
+
+            assertEquals(count, bytes.length);
+
+
+        } finally {
+            try {
+                bis.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+
+            try {
+                bos.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+
+
+        }
+
+    }
+
+    @Test
+    public void testTransferToJava9Syntax() throws IOException {
+
+        ByteArrayInputStream bis = new ByteArrayInputStream("Hello".getBytes());
+        ByteArrayOutputStream bos = new ByteArrayOutputStream();
+
+        try (bis; bos) {
+            
+            long count = bis.transferTo(bos);
+
+            byte[] bytes = bos.toByteArray();
+            assertEquals(count, bytes.length);
+        }
+    }
+}
