From 293f51206886465e26e092faecfbb5319a86d20c Mon Sep 17 00:00:00 2001
From: Moandji Ezana <mwanji@gmail.com>
Date: Sat, 5 Aug 2017 15:12:28 +0200
Subject: [PATCH] Fix https://github.com/mwanji/toml4j/issues/46

---
 CHANGELOG.md                                          | 6 ++++++
 README.md                                             | 2 +-
 src/main/java/com/moandjiezana/toml/ValueWriters.java | 5 +++--
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75a7311..7752d84 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # toml4j Changelog
 
+## 0.7.2 / 2017-08-05
+
+## Fixed
+
+* [tomlWriter.write NullPointerException in JDK9](https://github.com/mwanji/toml4j/issues/46) (thanks to __[iwangxiaodong](https://github.com/iwangxiaodong)__)
+
 ## 0.7.1 / 2016-07-27
 
 * [Support literal strings in table names](https://github.com/mwanji/toml4j/issues/36) (thanks to __[bruno-medeiros](https://github.com/bruno-medeiros)__)
diff --git a/README.md b/README.md
index c285731..5b9b685 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Add the following dependency to your POM (or equivalent for other dependency man
 <dependency>
   <groupId>com.moandjiezana.toml</groupId>
   <artifactId>toml4j</artifactId>
-  <version>0.7.1</version>
+  <version>0.7.2</version>
 </dependency>
 ```
 
diff --git a/src/main/java/com/moandjiezana/toml/ValueWriters.java b/src/main/java/com/moandjiezana/toml/ValueWriters.java
index be1b0db..51052fa 100644
--- a/src/main/java/com/moandjiezana/toml/ValueWriters.java
+++ b/src/main/java/com/moandjiezana/toml/ValueWriters.java
@@ -1,8 +1,8 @@
 package com.moandjiezana.toml;
 
 import static com.moandjiezana.toml.BooleanValueReaderWriter.BOOLEAN_VALUE_READER_WRITER;
-import static com.moandjiezana.toml.DateValueReaderWriter.DATE_VALUE_READER_WRITER;
 import static com.moandjiezana.toml.DateValueReaderWriter.DATE_PARSER_JDK_6;
+import static com.moandjiezana.toml.DateValueReaderWriter.DATE_VALUE_READER_WRITER;
 import static com.moandjiezana.toml.MapValueWriter.MAP_VALUE_WRITER;
 import static com.moandjiezana.toml.NumberValueReaderWriter.NUMBER_VALUE_READER_WRITER;
 import static com.moandjiezana.toml.ObjectValueWriter.OBJECT_VALUE_WRITER;
@@ -27,7 +27,8 @@ class ValueWriters {
   private ValueWriters() {}
   
   private static DateValueReaderWriter getPlatformSpecificDateConverter() {
-    return Runtime.class.getPackage().getSpecificationVersion().startsWith("1.6") ? DATE_PARSER_JDK_6 : DATE_VALUE_READER_WRITER;
+    String specificationVersion = Runtime.class.getPackage().getSpecificationVersion();
+    return specificationVersion != null && specificationVersion.startsWith("1.6") ? DATE_PARSER_JDK_6 : DATE_VALUE_READER_WRITER;
   }
 
   private static final ValueWriter[] VALUE_WRITERS = {