diff --git a/java/src/com/android/inputmethod/compat/CompatUtils.java b/java/src/com/android/inputmethod/compat/CompatUtils.java
index 660029b..4fd2a69 100644
--- a/java/src/com/android/inputmethod/compat/CompatUtils.java
+++ b/java/src/com/android/inputmethod/compat/CompatUtils.java
@@ -21,6 +21,7 @@
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
 public final class CompatUtils {
@@ -33,31 +34,31 @@
     public static Class<?> getClass(final String className) {
         try {
             return Class.forName(className);
-        } catch (ClassNotFoundException e) {
+        } catch (final ClassNotFoundException e) {
             return null;
         }
     }
 
     public static Method getMethod(final Class<?> targetClass, final String name,
             final Class<?>... parameterTypes) {
-        if (targetClass == null || TextUtils.isEmpty(name)) return null;
+        if (targetClass == null || TextUtils.isEmpty(name)) {
+            return null;
+        }
         try {
             return targetClass.getMethod(name, parameterTypes);
-        } catch (SecurityException e) {
-            // ignore
-        } catch (NoSuchMethodException e) {
+        } catch (final SecurityException | NoSuchMethodException e) {
             // ignore
         }
         return null;
     }
 
     public static Field getField(final Class<?> targetClass, final String name) {
-        if (targetClass == null || TextUtils.isEmpty(name)) return null;
+        if (targetClass == null || TextUtils.isEmpty(name)) {
+            return null;
+        }
         try {
             return targetClass.getField(name);
-        } catch (SecurityException e) {
-            // ignore
-        } catch (NoSuchFieldException e) {
+        } catch (final SecurityException | NoSuchFieldException e) {
             // ignore
         }
         return null;
@@ -65,22 +66,25 @@
 
     public static Constructor<?> getConstructor(final Class<?> targetClass,
             final Class<?> ... types) {
-        if (targetClass == null || types == null) return null;
+        if (targetClass == null || types == null) {
+            return null;
+        }
         try {
             return targetClass.getConstructor(types);
-        } catch (SecurityException e) {
-            // ignore
-        } catch (NoSuchMethodException e) {
+        } catch (final SecurityException | NoSuchMethodException e) {
             // ignore
         }
         return null;
     }
 
     public static Object newInstance(final Constructor<?> constructor, final Object ... args) {
-        if (constructor == null) return null;
+        if (constructor == null) {
+            return null;
+        }
         try {
             return constructor.newInstance(args);
-        } catch (Exception e) {
+        } catch (final InstantiationException | IllegalAccessException | IllegalArgumentException
+                | InvocationTargetException e) {
             Log.e(TAG, "Exception in newInstance", e);
         }
         return null;
@@ -88,10 +92,13 @@
 
     public static Object invoke(final Object receiver, final Object defaultValue,
             final Method method, final Object... args) {
-        if (method == null) return defaultValue;
+        if (method == null) {
+            return defaultValue;
+        }
         try {
             return method.invoke(receiver, args);
-        } catch (Exception e) {
+        } catch (final IllegalAccessException | IllegalArgumentException
+                | InvocationTargetException e) {
             Log.e(TAG, "Exception in invoke", e);
         }
         return defaultValue;
@@ -99,20 +106,24 @@
 
     public static Object getFieldValue(final Object receiver, final Object defaultValue,
             final Field field) {
-        if (field == null) return defaultValue;
+        if (field == null) {
+            return defaultValue;
+        }
         try {
             return field.get(receiver);
-        } catch (Exception e) {
+        } catch (final IllegalAccessException | IllegalArgumentException e) {
             Log.e(TAG, "Exception in getFieldValue", e);
         }
         return defaultValue;
     }
 
     public static void setFieldValue(final Object receiver, final Field field, final Object value) {
-        if (field == null) return;
+        if (field == null) {
+            return;
+        }
         try {
             field.set(receiver, value);
-        } catch (Exception e) {
+        } catch (final IllegalAccessException | IllegalArgumentException e) {
             Log.e(TAG, "Exception in setFieldValue", e);
         }
     }
diff --git a/java/src/com/android/inputmethod/compat/DownloadManagerCompatUtils.java b/java/src/com/android/inputmethod/compat/DownloadManagerCompatUtils.java
index d0b9c5d..6209b60 100644
--- a/java/src/com/android/inputmethod/compat/DownloadManagerCompatUtils.java
+++ b/java/src/com/android/inputmethod/compat/DownloadManagerCompatUtils.java
@@ -24,7 +24,7 @@
     // DownloadManager.Request#setAllowedOverMetered() has been introduced
     // in API level 16 (Build.VERSION_CODES.JELLY_BEAN).
     private static final Method METHOD_setAllowedOverMetered = CompatUtils.getMethod(
-            DownloadManager.Request.class, "setAllowedOverMetered", Boolean.TYPE);
+            DownloadManager.Request.class, "setAllowedOverMetered", boolean.class);
 
     public static DownloadManager.Request setAllowedOverMetered(
             final DownloadManager.Request request, final boolean allowOverMetered) {
diff --git a/java/src/com/android/inputmethod/compat/InputMethodManagerCompatWrapper.java b/java/src/com/android/inputmethod/compat/InputMethodManagerCompatWrapper.java
index 18b3a60..aa20c03 100644
--- a/java/src/com/android/inputmethod/compat/InputMethodManagerCompatWrapper.java
+++ b/java/src/com/android/inputmethod/compat/InputMethodManagerCompatWrapper.java
@@ -26,7 +26,7 @@
     // Note that InputMethodManager.switchToNextInputMethod() has been introduced
     // in API level 16 (Build.VERSION_CODES.JELLY_BEAN).
     private static final Method METHOD_switchToNextInputMethod = CompatUtils.getMethod(
-            InputMethodManager.class, "switchToNextInputMethod", IBinder.class, Boolean.TYPE);
+            InputMethodManager.class, "switchToNextInputMethod", IBinder.class, boolean.class);
 
     // Note that InputMethodManager.shouldOfferSwitchingToNextInputMethod() has been introduced
     // in API level 19 (Build.VERSION_CODES.KITKAT).
diff --git a/java/src/com/android/inputmethod/compat/InputMethodSubtypeCompatUtils.java b/java/src/com/android/inputmethod/compat/InputMethodSubtypeCompatUtils.java
index ee9125a..3658672 100644
--- a/java/src/com/android/inputmethod/compat/InputMethodSubtypeCompatUtils.java
+++ b/java/src/com/android/inputmethod/compat/InputMethodSubtypeCompatUtils.java
@@ -32,8 +32,8 @@
     // has been introduced in API level 17 (Build.VERSION_CODE.JELLY_BEAN_MR1).
     private static final Constructor<?> CONSTRUCTOR_INPUT_METHOD_SUBTYPE =
             CompatUtils.getConstructor(InputMethodSubtype.class,
-                    Integer.TYPE, Integer.TYPE, String.class, String.class, String.class,
-                    Boolean.TYPE, Boolean.TYPE, Integer.TYPE);
+                    int.class, int.class, String.class, String.class, String.class, boolean.class,
+                    boolean.class, int.class);
     static {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
             if (CONSTRUCTOR_INPUT_METHOD_SUBTYPE == null) {
diff --git a/java/src/com/android/inputmethod/compat/SuggestionSpanUtils.java b/java/src/com/android/inputmethod/compat/SuggestionSpanUtils.java
index 4c76635..c07997b 100644
--- a/java/src/com/android/inputmethod/compat/SuggestionSpanUtils.java
+++ b/java/src/com/android/inputmethod/compat/SuggestionSpanUtils.java
@@ -34,9 +34,9 @@
 public final class SuggestionSpanUtils {
     // Note that SuggestionSpan.FLAG_AUTO_CORRECTION has been introduced
     // in API level 15 (Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1).
-    public static final Field FIELD_FLAG_AUTO_CORRECTION = CompatUtils.getField(
+    private static final Field FIELD_FLAG_AUTO_CORRECTION = CompatUtils.getField(
             SuggestionSpan.class, "FLAG_AUTO_CORRECTION");
-    public static final Integer OBJ_FLAG_AUTO_CORRECTION = (Integer) CompatUtils.getFieldValue(
+    private static final Integer OBJ_FLAG_AUTO_CORRECTION = (Integer) CompatUtils.getFieldValue(
             null /* receiver */, null /* defaultValue */, FIELD_FLAG_AUTO_CORRECTION);
 
     static {
diff --git a/java/src/com/android/inputmethod/compat/UserDictionaryCompatUtils.java b/java/src/com/android/inputmethod/compat/UserDictionaryCompatUtils.java
index 6e32e74..1fb597b 100644
--- a/java/src/com/android/inputmethod/compat/UserDictionaryCompatUtils.java
+++ b/java/src/com/android/inputmethod/compat/UserDictionaryCompatUtils.java
@@ -26,7 +26,7 @@
     // UserDictionary.Words#addWord(Context, String, int, String, Locale) was introduced
     // in API level 16 (Build.VERSION_CODES.JELLY_BEAN).
     private static final Method METHOD_addWord = CompatUtils.getMethod(Words.class, "addWord",
-            Context.class, String.class, Integer.TYPE, String.class, Locale.class);
+            Context.class, String.class, int.class, String.class, Locale.class);
 
     @SuppressWarnings("deprecation")
     public static void addWord(final Context context, final String word,
diff --git a/java/src/com/android/inputmethod/compat/ViewCompatUtils.java b/java/src/com/android/inputmethod/compat/ViewCompatUtils.java
index 767cc42..deb6809 100644
--- a/java/src/com/android/inputmethod/compat/ViewCompatUtils.java
+++ b/java/src/com/android/inputmethod/compat/ViewCompatUtils.java
@@ -30,7 +30,7 @@
             View.class, "getPaddingEnd");
     private static final Method METHOD_setPaddingRelative = CompatUtils.getMethod(
             View.class, "setPaddingRelative",
-            Integer.TYPE, Integer.TYPE, Integer.TYPE, Integer.TYPE);
+            int.class, int.class, int.class, int.class);
 
     private ViewCompatUtils() {
         // This utility class is not publicly instantiable.
diff --git a/tests/src/com/android/inputmethod/keyboard/internal/MoreKeySpecSplitTests.java b/tests/src/com/android/inputmethod/keyboard/internal/MoreKeySpecSplitTests.java
index 29b169d..922d2a8 100644
--- a/tests/src/com/android/inputmethod/keyboard/internal/MoreKeySpecSplitTests.java
+++ b/tests/src/com/android/inputmethod/keyboard/internal/MoreKeySpecSplitTests.java
@@ -53,7 +53,7 @@
     private static String[] getAllResourceIdNames(final Class<?> resourceIdClass) {
         final ArrayList<String> names = new ArrayList<>();
         for (final Field field : resourceIdClass.getFields()) {
-            if (field.getType() == Integer.TYPE) {
+            if (field.getType() == int.class) {
                 names.add(field.getName());
             }
         }