Fix #2466

Author: cowtowncoder

release-notes/CREDITS-2.x

@@ -956,6 +956,10 @@ Hesham Massoud (heshamMassoud@github)
    (2.10.0)
 
 David Connelly (dconnelly@github)
-  * Reported#2446: Java 11: Unable to load JDK7 types (annotations, java.nio.file.Path):
+  * Reported #2446: Java 11: Unable to load JDK7 types (annotations, java.nio.file.Path):
     no Java7 support added
    (2.10.0)
+
+Wahey (KevynBct@github)
+  * Reported #2466: Didn't find class "java.nio.file.Path" below Android api 26
+  (2.10.0)

release-notes/VERSION-2.x

@@ -4,6 +4,11 @@ Project: jackson-databind
 === Releases === 
 ------------------------------------------------------------------------
 
+2.10.0 (not yet released)
+
+#2466: Didn't find class "java.nio.file.Path" below Android api 26
+ (reported by KevynBct@github)
+
 2.10.0.pr3 (17-Sep-2019)
 
 #1093: Default typing does not work with `writerFor(Object.class)`

src/main/java/com/fasterxml/jackson/databind/ext/Java7HandlersImpl.java

@@ -10,22 +10,30 @@
  */
 public class Java7HandlersImpl extends Java7Handlers
 {
+    private final Class<?> _pathClass;
+    
+    public Java7HandlersImpl() {
+        // 19-Sep-2019, tatu: Important to do this here, because otherwise
+        //    we get [databind#2466]
+        _pathClass = Path.class;
+    }
+    
     @Override
     public Class<?> getClassJavaNioFilePath() {
-        return Path.class;
+        return _pathClass;
     }
 
     @Override
     public JsonDeserializer<?> getDeserializerForJavaNioFilePath(Class<?> rawType) {
-        if (rawType == Path.class) {
+        if (rawType == _pathClass) {
             return new NioPathDeserializer();
         }
         return null;
     }
 
     @Override
     public JsonSerializer<?> getSerializerForJavaNioFilePath(Class<?> rawType) {
-        if (Path.class.isAssignableFrom(rawType)) {
+        if (_pathClass.isAssignableFrom(rawType)) {
             return new NioPathSerializer();
         }
         return null;

src/main/java/com/fasterxml/jackson/databind/ext/Java7SupportImpl.java

@@ -17,7 +17,8 @@ public class Java7SupportImpl extends Java7Support
     private final Class<?> _bogus;
 
     public Java7SupportImpl() {
-        // Trigger loading of annotations that only JDK 7 has...
+        // Trigger loading of annotations that only JDK 7 has, to trigger
+        // early fail (see [databind#2466])
         Class<?> cls = Transient.class;
         cls = ConstructorProperties.class;
         _bogus = cls;