Cherry-picked simplifications from #4076

Author: cowtowncoder

src/main/java/com/fasterxml/jackson/databind/introspect/AnnotatedMethodCollector.java

@@ -79,12 +79,10 @@ AnnotatedMethodMap collect(TypeFactory typeFactory, TypeResolutionContext tc,
                 try {
                     // And with that, we can generate it appropriately
                     Method m = Object.class.getDeclaredMethod(k.getName());
-                    if (m != null) {
-                        MethodBuilder b = entry.getValue();
-                        b.annotations = collectDefaultAnnotations(b.annotations,
-                                m.getDeclaredAnnotations());
-                        b.method = m;
-                   }
+                    MethodBuilder b = entry.getValue();
+                    b.annotations = collectDefaultAnnotations(b.annotations,
+                            m.getDeclaredAnnotations());
+                    b.method = m;
                 } catch (Exception e) { }
             }
         }

src/main/java/com/fasterxml/jackson/databind/util/ClassUtil.java

@@ -339,8 +339,7 @@ public static boolean hasGetterSignature(Method m)
             return false;
         }
         // Must take no args
-        Class<?>[] pts = m.getParameterTypes();
-        if (pts != null && pts.length != 0) {
+        if (m.getParameterTypes().length != 0) {
             return false;
         }
         // Can't be a void method

src/main/java/com/fasterxml/jackson/databind/util/StdDateFormat.java

@@ -342,7 +342,7 @@ public void setLenient(boolean enabled) {
     @Override // since 2.7
     public boolean isLenient() {
         // default is, I believe, true
-        return (_lenient == null) || _lenient.booleanValue();
+        return (_lenient == null) || _lenient;
     }
 
     /**

src/main/java/com/fasterxml/jackson/databind/util/TokenBuffer.java

@@ -451,11 +451,11 @@ public void serialize(JsonGenerator gen) throws IOException
                 {
                     Object n = segment.get(ptr);
                     if (n instanceof Double) {
-                        gen.writeNumber(((Double) n).doubleValue());
+                        gen.writeNumber((Double) n);
                     } else if (n instanceof BigDecimal) {
                         gen.writeNumber((BigDecimal) n);
                     } else if (n instanceof Float) {
-                        gen.writeNumber(((Float) n).floatValue());
+                        gen.writeNumber((Float) n);
                     } else if (n == null) {
                         gen.writeNull();
                     } else if (n instanceof String) {
@@ -745,17 +745,15 @@ public void writeStartObject(Object forValue) throws IOException
     {
         _writeContext.writeValue();
         _appendStartMarker(JsonToken.START_OBJECT);
-        JsonWriteContext ctxt = _writeContext.createChildObjectContext(forValue);
-        _writeContext = ctxt;
+        _writeContext = _writeContext.createChildObjectContext(forValue);
     }
 
     @Override // since 2.10.1
     public void writeStartObject(Object forValue, int size) throws IOException
     {
         _writeContext.writeValue();
         _appendStartMarker(JsonToken.START_OBJECT);
-        JsonWriteContext ctxt = _writeContext.createChildObjectContext(forValue);
-        _writeContext = ctxt;
+        _writeContext = _writeContext.createChildObjectContext(forValue);
     }
 
     @Override
@@ -2182,8 +2180,7 @@ public int rawType(int index)
             if (index > 0) {
                 l >>= (index << 2);
             }
-            int ix = ((int) l) & 0xF;
-            return ix;
+            return ((int) l) & 0xF;
         }
 
         public Object get(int index) {