diff --git a/core/java/com/android/internal/os/Zygote.java b/core/java/com/android/internal/os/Zygote.java
index 94924a57e3f23..e573420d1dc33 100644
--- a/core/java/com/android/internal/os/Zygote.java
+++ b/core/java/com/android/internal/os/Zygote.java
@@ -534,7 +534,7 @@ public final class Zygote {
     static Runnable forkUsap(LocalServerSocket usapPoolSocket,
                              int[] sessionSocketRawFDs,
                              boolean isPriorityFork) {
-        FileDescriptor[] pipeFDs = null;
+        FileDescriptor[] pipeFDs;
 
         try {
             pipeFDs = Os.pipe2(O_CLOEXEC);
diff --git a/core/java/com/android/internal/os/ZygoteConnection.java b/core/java/com/android/internal/os/ZygoteConnection.java
index 4949811bbe17f..ac00afd32945c 100644
--- a/core/java/com/android/internal/os/ZygoteConnection.java
+++ b/core/java/com/android/internal/os/ZygoteConnection.java
@@ -504,8 +504,8 @@ class ZygoteConnection {
                         parsedArgs.mDisabledCompatChanges,
                         parsedArgs.mRemainingArgs, null /* classLoader */);
             } else {
-                return ZygoteInit.childZygoteInit(parsedArgs.mTargetSdkVersion,
-                        parsedArgs.mRemainingArgs, null /* classLoader */);
+                return ZygoteInit.childZygoteInit(
+                        parsedArgs.mRemainingArgs  /* classLoader */);
             }
         }
     }
diff --git a/core/java/com/android/internal/os/ZygoteInit.java b/core/java/com/android/internal/os/ZygoteInit.java
index a47bd17f45af9..d6f3b80f44e0c 100644
--- a/core/java/com/android/internal/os/ZygoteInit.java
+++ b/core/java/com/android/internal/os/ZygoteInit.java
@@ -112,7 +112,7 @@ public class ZygoteInit {
     /**
      * Controls whether we should preload resources during zygote init.
      */
-    public static final boolean PRELOAD_RESOURCES = true;
+    private static final boolean PRELOAD_RESOURCES = true;
 
     private static final int UNPRIVILEGED_UID = 9999;
     private static final int UNPRIVILEGED_GID = 9999;
@@ -160,7 +160,7 @@ public class ZygoteInit {
         sPreloadComplete = true;
     }
 
-    public static void lazyPreload() {
+    static void lazyPreload() {
         Preconditions.checkState(!sPreloadComplete);
         Log.i(TAG, "Lazily preloading resources.");
 
@@ -345,7 +345,7 @@ public class ZygoteInit {
             }
             if ("true".equals(prop)) {
                 Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "ResetJitCounters");
-                runtime.resetJitCounters();
+                VMRuntime.resetJitCounters();
                 Trace.traceEnd(Trace.TRACE_TAG_DALVIK);
             }
 
@@ -394,8 +394,6 @@ public class ZygoteInit {
      * larger.
      */
     private static void preloadResources() {
-        final VMRuntime runtime = VMRuntime.getRuntime();
-
         try {
             mResources = Resources.getSystem();
             mResources.startPreloading();
@@ -439,9 +437,7 @@ public class ZygoteInit {
         int N = ar.length();
         for (int i = 0; i < N; i++) {
             int id = ar.getResourceId(i, 0);
-            if (false) {
-                Log.v(TAG, "Preloading resource #" + Integer.toHexString(id));
-            }
+
             if (id != 0) {
                 if (mResources.getColorStateList(id, null) == null) {
                     throw new IllegalArgumentException(
@@ -459,9 +455,7 @@ public class ZygoteInit {
         int N = ar.length();
         for (int i = 0; i < N; i++) {
             int id = ar.getResourceId(i, 0);
-            if (false) {
-                Log.v(TAG, "Preloading resource #" + Integer.toHexString(id));
-            }
+
             if (id != 0) {
                 if (mResources.getDrawable(id, null) == null) {
                     throw new IllegalArgumentException(
@@ -682,13 +676,12 @@ public class ZygoteInit {
                 final String packageName = "*";
                 final String outputPath = null;
                 final int dexFlags = 0;
-                final String compilerFilter = systemServerFilter;
                 final String uuid = StorageManager.UUID_PRIVATE_INTERNAL;
                 final String seInfo = null;
                 final int targetSdkVersion = 0;  // SystemServer targets the system's SDK version
                 try {
                     installd.dexopt(classPathElement, Process.SYSTEM_UID, packageName,
-                            instructionSet, dexoptNeeded, outputPath, dexFlags, compilerFilter,
+                            instructionSet, dexoptNeeded, outputPath, dexFlags, systemServerFilter,
                             uuid, classLoaderContext, seInfo, false /* downgrade */,
                             targetSdkVersion, /*profileName*/ null, /*dexMetadataPath*/ null,
                             "server-dexopt");
@@ -767,7 +760,7 @@ public class ZygoteInit {
         capabilities &= ((long) data[0].effective) | (((long) data[1].effective) << 32);
 
         /* Hardcoded command line to start the system server */
-        String args[] = {
+        String[] args = {
                 "--setuid=1000",
                 "--setgid=1000",
                 "--setgroups=1001,1002,1003,1004,1005,1006,1007,1008,1009,1010,1018,1021,1023,"
@@ -778,7 +771,7 @@ public class ZygoteInit {
                 "--target-sdk-version=" + VMRuntime.SDK_VERSION_CUR_DEVELOPMENT,
                 "com.android.server.SystemServer",
         };
-        ZygoteArguments parsedArgs = null;
+        ZygoteArguments parsedArgs;
 
         int pid;
 
@@ -847,7 +840,7 @@ public class ZygoteInit {
      * @param argv  Command line arguments used to specify the Zygote's configuration.
      */
     @UnsupportedAppUsage
-    public static void main(String argv[]) {
+    public static void main(String[] argv) {
         ZygoteServer zygoteServer = null;
 
         // Mark zygote start. This ensures that thread creation will throw
@@ -996,7 +989,7 @@ public class ZygoteInit {
      *                              are enabled)
      * @param argv             arg strings
      */
-    public static final Runnable zygoteInit(int targetSdkVersion, long[] disabledCompatChanges,
+    public static Runnable zygoteInit(int targetSdkVersion, long[] disabledCompatChanges,
             String[] argv, ClassLoader classLoader) {
         if (RuntimeInit.DEBUG) {
             Slog.d(RuntimeInit.TAG, "RuntimeInit: Starting application from zygote");
@@ -1016,11 +1009,10 @@ public class ZygoteInit {
      * to zygoteInit(), which skips calling into initialization routines that start the Binder
      * threadpool.
      */
-    static final Runnable childZygoteInit(
-            int targetSdkVersion, String[] argv, ClassLoader classLoader) {
+    static Runnable childZygoteInit(String[] argv) {
         RuntimeInit.Arguments args = new RuntimeInit.Arguments(argv);
-        return RuntimeInit.findStaticMain(args.startClass, args.startArgs, classLoader);
+        return RuntimeInit.findStaticMain(args.startClass, args.startArgs, /* classLoader= */null);
     }
 
-    private static final native void nativeZygoteInit();
+    private static native void nativeZygoteInit();
 }
diff --git a/core/java/com/android/internal/os/ZygoteServer.java b/core/java/com/android/internal/os/ZygoteServer.java
index 8d281b7ce9a0e..a0b50df52e86f 100644
--- a/core/java/com/android/internal/os/ZygoteServer.java
+++ b/core/java/com/android/internal/os/ZygoteServer.java
@@ -411,7 +411,7 @@ class ZygoteServer {
         }
     }
 
-    void resetUsapRefillState() {
+    private void resetUsapRefillState() {
         mUsapPoolRefillAction = UsapPoolRefillAction.NONE;
         mUsapPoolRefillTriggerTimestamp = INVALID_TIMESTAMP;
     }