MethodHandleTest++

MethodHandleTest++

Author: inbravo

src/main/java/com/inbravo/jdk7/MethodHandleTest.java

@@ -25,6 +25,7 @@ public static final void main(final String... args) throws Throwable {
 
   @SuppressWarnings("unused")
   private static final void hello() {
+    
     System.out.println("hello");
   }
 }

src/main/java/com/inbravo/jdk7/SafeVarargsAnnotationTest.java

@@ -1,3 +1,25 @@
+/*
+ * MIT License
+ * 
+ * The Java '@SafeVarargs' annotation
+ *
+ * Copyright (c) 2017 Onwards Amit Dixit (github.com/inbravo)
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+ * associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
+ * NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
 package com.inbravo.jdk7;
 
 import java.util.ArrayList;

src/main/java/com/inbravo/jdk9/UnderscoreAsIdentifierTest.java

@@ -24,7 +24,7 @@
 package com.inbravo.jdk9;
 
 /**
- * Oracle has removed underscore (“_”) usage as identifier completely in Java SE 9 release
+ * Oracle has removed underscore ('_') usage as identifier completely in Java SE 9 release
  * 
  * @author amit.dixit
  */
@@ -34,7 +34,7 @@ public static void main(final String... args) {
 
         final String stringWithoutUnderscore = "stringWithoutUnderscore";
 
-        /* Line below will give error */
+        /* Will give error '' should not be used as an identifier, since it is a reserved keyword from source level 1.8 on' */
         /* final String _ = "stringWithUnderscore"; */
         /* System.out.println("stringWithUnderscore : " + _); */
         System.out.println("stringWithoutUnderscore : " + stringWithoutUnderscore);        

src/main/java/com/inbravo/jdk9/VarHandleTest.java

@@ -1,7 +1,24 @@
 /*
- * To change this license header, choose License Headers in Project Properties.
- * To change this template file, choose Tools | Templates
- * and open the template in the editor.
+ * MIT License
+ * 
+ * Class 'java.lang.invoke.VarHandle' example based on JEP-193
+ *
+ * Copyright (c) 2017 Onwards Amit Dixit (github.com/inbravo)
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+ * associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
+ * NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 package com.inbravo.jdk9;
 
@@ -14,19 +31,22 @@
  * @author amit.dixit
  */
 public class VarHandleTest {
-    
-    public static void main(final String... args) {
-        try {
-            final MethodHandles.Lookup lookup = MethodHandles.lookup();
-            final VarHandle varHandle = lookup.in(Foo.class).findVarHandle(Foo.class, "i", int.class);
-            
-            System.out.println(varHandle);
-        } catch (final ReflectiveOperationException e) {
-            throw new Error(e);
-        }
+
+  public static void main(final String... args) {
+    try {
+      final MethodHandles.Lookup lookup = MethodHandles.lookup();
+      final VarHandle varHandle = lookup.in(Foo.class).findVarHandle(Foo.class, "i", int.class);
+
+      System.out.println(varHandle);
+    } catch (final ReflectiveOperationException e) {
+      throw new Error(e);
     }
+  }
 }
 
+
+/* A non static nested class = Inner Class 'Foo' */
 class Foo {
-    public final int i = 10;
+
+  public final int i = 10;
 }