Change things a bit to use helper method names 3.0 also uses

Author: cowtowncoder

src/main/java/com/fasterxml/jackson/core/JsonFactory.java

@@ -1026,7 +1026,7 @@ public JsonFactory setCodec(ObjectCodec oc) {
     public JsonParser createParser(File f) throws IOException, JsonParseException {
         // true, since we create InputStream from File
         IOContext ctxt = _createContext(_createContentReference(f), true);
-        InputStream in = _streamFromFile(f);
+        InputStream in = _fileInputStream(f);
         return _createParser(_decorate(in, ctxt), ctxt);
     }
 
@@ -1336,7 +1336,7 @@ public JsonGenerator createGenerator(Writer w) throws IOException {
     @Override
     public JsonGenerator createGenerator(File f, JsonEncoding enc) throws IOException
     {
-        OutputStream out = new FileOutputStream(f);
+        OutputStream out = _fileOutputStream(f);
         // true -> yes, we have to manage the stream since we created it
         IOContext ctxt = _createContext(_createContentReference(out), true);
         ctxt.setEncoding(enc);

src/main/java/com/fasterxml/jackson/core/TokenStreamFactory.java

@@ -218,7 +218,17 @@ protected InputStream _optimizedStreamFromURL(URL url) throws IOException {
      *
      * @since 2.14
      */
-    protected InputStream _streamFromFile(File f) throws IOException {
+    protected InputStream _fileInputStream(File f) throws IOException {
         return new FileInputStream(f);
     }
+
+    /**
+     * Helper methods used for constructing an {@link OutputStream} for
+     * generator to use, when target is to be written into given {@link File}.
+     *
+     * @since 2.14
+     */
+    protected OutputStream _fileOutputStream(File f) throws IOException {
+        return new FileOutputStream(f);
+    }
 }