Fix an issue with OpenJ9

pom.xml

@@ -13,8 +13,8 @@
         <sourceDirectory>src</sourceDirectory>
     </build>
     <properties>
-       <maven.compiler.source>1.6</maven.compiler.source>
-       <maven.compiler.target>1.6</maven.compiler.target>
+       <maven.compiler.source>1.8</maven.compiler.source>
+       <maven.compiler.target>1.8</maven.compiler.target>
     </properties>
     <name>permit-reflect</name>
     <description>reflection utils for jigsaw</description>

src/com/nqzero/permit/Permit.java

@@ -1,4 +1,4 @@
-// copyright 2018 nqzero - offered under the terms of the MIT License
+// copyright 2021 nqzero - offered under the terms of the MIT License
 
 package com.nqzero.permit;
 
@@ -13,36 +13,13 @@ public class Permit<TT,VV> extends Safer<TT,VV> {
     public static final String splitChar = "\\.";
 
     static Exception savedEx;
-    static Permit<AccessibleObject,Boolean> override;
-    static {
-        getOverride();
-    }
 
-    static void getOverride() {
-        Permit fake = null;
-        Exception saved = null;
-        try { override = build(AccessibleObject.class,"override"); }
-        catch (Exception ex) { saved = ex; }
-        if (saved != null)
-            try {
-                fake = build(Fake.class,"override");
-                fake.klass = AccessibleObject.class;
-                override = fake;
-                return;
-            }
-            catch (Exception ex) {}
-        savedEx = saved;
-    }
-
     public static void setAccessible(AccessibleObject accessor) throws InitializationFailed {
         if (savedEx != null)
             throw new InitializationFailed();
-        override.putBoolean(accessor,true);
-    }
-    static class Fake {
-        boolean override;
+        accessor.setAccessible(true);
     }
-    
+
     public static boolean initSucceeded(boolean rethrow) {
         if (savedEx==null)
             return true;

src/com/nqzero/permit/Unsafer.java

@@ -1,19 +1,21 @@
-// copyright 2018 nqzero - offered under the terms of the MIT License
+// copyright 2021 nqzero - offered under the terms of the MIT License
 
 package com.nqzero.permit;
 
 import java.lang.reflect.Field;
+import sun.misc.Unsafe;
 
 public class Unsafer {
-    private static Object getField(Class klass,String name) {
+
+    public static final Unsafe uu;
+
+    static {
         try {
-            Field f = klass.getDeclaredField(name);
-            f.setAccessible(true);
-            return f.get(null);
+            Field field = Unsafe.class.getDeclaredField("theUnsafe");
+            field.setAccessible(true);
+            uu = (Unsafe) field.get(null);
+        } catch (IllegalAccessException | NoSuchFieldException e) {
+            throw new ExceptionInInitializerError(e);
         }
-        catch (Exception e) { return null; }
     }
-    public static final sun.misc.Unsafe uu =
-            (sun.misc.Unsafe) getField(sun.misc.Unsafe.class,"theUnsafe");
-
 }