Enforce some basic error prone build rules

Start enforcing some basic build rules against TF AOSP for
starter.
- Fix the string format issue.

Test: error prone run
Bug: 35864476
Change-Id: Ia6bb9a7acd6883e1240bf83f5451e66b3298c6f8
diff --git a/src/com/android/media/tests/AudioLoopbackTest.java b/src/com/android/media/tests/AudioLoopbackTest.java
index 0fad1f8..1e4859b 100644
--- a/src/com/android/media/tests/AudioLoopbackTest.java
+++ b/src/com/android/media/tests/AudioLoopbackTest.java
@@ -80,24 +80,26 @@
     @Option(name = "key-prefix", description = "Key Prefix for reporting")
     private String mKeyPrefix = "48000_Mic3_";
 
-    private final String DEVICE_TEMP_DIR_PATH = "/sdcard/";
-    private final String OUTPUT_FILENAME = "output_" + System.currentTimeMillis();
-    private final String OUTPUT_RESULT_TXT_PATH = DEVICE_TEMP_DIR_PATH + OUTPUT_FILENAME + ".txt";
-    private final String OUTPUT_PNG_PATH = DEVICE_TEMP_DIR_PATH + OUTPUT_FILENAME + ".png";
-    private final String OUTPUT_WAV_PATH = DEVICE_TEMP_DIR_PATH + OUTPUT_FILENAME + ".wav";
-    private final String OUTPUT_PLAYER_BUFFER_PATH =
+    private static final String DEVICE_TEMP_DIR_PATH = "/sdcard/";
+    private static final String OUTPUT_FILENAME = "output_" + System.currentTimeMillis();
+    private static final String OUTPUT_RESULT_TXT_PATH =
+            DEVICE_TEMP_DIR_PATH + OUTPUT_FILENAME + ".txt";
+    private static final String OUTPUT_PNG_PATH = DEVICE_TEMP_DIR_PATH + OUTPUT_FILENAME + ".png";
+    private static final String OUTPUT_WAV_PATH = DEVICE_TEMP_DIR_PATH + OUTPUT_FILENAME + ".wav";
+    private static final String OUTPUT_PLAYER_BUFFER_PATH =
             DEVICE_TEMP_DIR_PATH + OUTPUT_FILENAME + "_playerBufferPeriod.txt";
-    private final String OUTPUT_PLAYER_BUFFER_PNG_PATH =
+    private static final String OUTPUT_PLAYER_BUFFER_PNG_PATH =
             DEVICE_TEMP_DIR_PATH + OUTPUT_FILENAME + "_playerBufferPeriod.png";
-    private final String OUTPUT_RECORDER_BUFFER_PATH =
+    private static final String OUTPUT_RECORDER_BUFFER_PATH =
             DEVICE_TEMP_DIR_PATH + OUTPUT_FILENAME + "_recorderBufferPeriod.txt";
-    private final String OUTPUT_RECORDER_BUFFER_PNG_PATH =
+    private static final String OUTPUT_RECORDER_BUFFER_PNG_PATH =
             DEVICE_TEMP_DIR_PATH + OUTPUT_FILENAME + "_recorderBufferPeriod.png";
-    private final String OUTPUT_GLITCH_PATH =
+    private static final String OUTPUT_GLITCH_PATH =
             DEVICE_TEMP_DIR_PATH + OUTPUT_FILENAME + "_glitchMillis.txt";
-    private final String AM_CMD = "am start -n org.drrickorang.loopback/.LoopbackActivity" +
-            " --ei SF %s --es FileName %s --ei MicSource %s --ei AudioThread %s" +
-            " --ei AudioLevel %s --ei TestType %s --ei BufferTestDuration %s";
+    private static final String AM_CMD =
+            "am start -n org.drrickorang.loopback/.LoopbackActivity"
+                    + " --ei SF %s --es FileName %s --ei MicSource %s --ei AudioThread %s"
+                    + " --ei AudioLevel %s --ei TestType %s --ei BufferTestDuration %s";
 
     private static Map<String, String> createMetricsKeyMap() {
         Map<String, String> result = new HashMap<String, String>();
diff --git a/src/com/android/media/tests/CameraPerformanceTest.java b/src/com/android/media/tests/CameraPerformanceTest.java
index a2252e3..c24c1b2 100644
--- a/src/com/android/media/tests/CameraPerformanceTest.java
+++ b/src/com/android/media/tests/CameraPerformanceTest.java
@@ -208,16 +208,16 @@
      */
     public abstract class CtsResultParserBase {
         // KPIs to be reported. The key is test methods and the value is KPIs in the method.
-        private final ImmutableMultimap<String, String> REPORTING_KPIS =
+        private ImmutableMultimap<String, String> mReportingKpis =
                 new ImmutableMultimap.Builder<String, String>()
-                    .put("testCameraLaunch", "Camera launch time")
-                    .put("testCameraLaunch", "Camera start preview time")
-                    .put("testSingleCapture", "Camera capture result latency")
-                    .put("testReprocessingLatency", "YUV reprocessing shot to shot latency")
-                    .put("testReprocessingLatency", "opaque reprocessing shot to shot latency")
-                    .put("testReprocessingThroughput", "YUV reprocessing capture latency")
-                    .put("testReprocessingThroughput", "opaque reprocessing capture latency")
-                    .build();
+                        .put("testCameraLaunch", "Camera launch time")
+                        .put("testCameraLaunch", "Camera start preview time")
+                        .put("testSingleCapture", "Camera capture result latency")
+                        .put("testReprocessingLatency", "YUV reprocessing shot to shot latency")
+                        .put("testReprocessingLatency", "opaque reprocessing shot to shot latency")
+                        .put("testReprocessingThroughput", "YUV reprocessing capture latency")
+                        .put("testReprocessingThroughput", "opaque reprocessing capture latency")
+                        .build();
 
         protected CtsMetric mSummary;
         protected List<CtsMetric> mDetails = new ArrayList<>();
@@ -234,7 +234,7 @@
         protected Map<String, String> filter(List<CtsMetric> metrics, String testMethod) {
             Map<String, String> filtered = new HashMap<String, String>();
             for (CtsMetric metric : metrics) {
-                for (String kpiName : REPORTING_KPIS.get(testMethod)) {
+                for (String kpiName : mReportingKpis.get(testMethod)) {
                     // Post the data only when it matches with the given methods and KPI names.
                     if (metric.matches(testMethod, kpiName)) {
                         filtered.put(metric.schemaKey, metric.value);
@@ -297,11 +297,13 @@
     public class CtsDelimitedResultParser extends CtsResultParserBase {
         private static final String LOG_SEPARATOR = "\\+\\+\\+";
         private static final String SUMMARY_SEPARATOR = "\\+\\+\\+\\+";
-        private final Pattern SUMMARY_REGEX = Pattern.compile(
-                "^(?<message>[^|]+)\\| \\|(?<type>[^|]+)\\|(?<unit>[^|]+)\\|(?<value>[0-9 .]+)");
-        private final Pattern DETAIL_REGEX = Pattern.compile(
-                "^(?<source>[^|]+)\\|(?<message>[^|]+)\\|(?<type>[^|]+)\\|(?<unit>[^|]+)\\|"
-                + "(?<values>[0-9 .]+)");
+        private Pattern mSummaryRegex =
+                Pattern.compile(
+                        "^(?<message>[^|]+)\\| \\|(?<type>[^|]+)\\|(?<unit>[^|]+)\\|(?<value>[0-9 .]+)");
+        private Pattern mDetailRegex =
+                Pattern.compile(
+                        "^(?<source>[^|]+)\\|(?<message>[^|]+)\\|(?<type>[^|]+)\\|(?<unit>[^|]+)\\|"
+                                + "(?<values>[0-9 .]+)");
 
         @Override
         public Map<String, String> parse(String result, String testMethod) {
@@ -315,7 +317,7 @@
             if (output.length != 2) {
                 throw new RuntimeException("Value not in the correct format");
             }
-            Matcher summaryMatcher = SUMMARY_REGEX.matcher(output[0].trim());
+            Matcher summaryMatcher = mSummaryRegex.matcher(output[0].trim());
 
             // Parse summary.
             // Example: "Camera launch average time for Camera 1| |lower_better|ms|586.6++++"
@@ -335,7 +337,7 @@
             // Example: "android.hardware.camera2.cts.PerformanceTest#testCameraLaunch:171|Camera 0: Camera open time|lower_better|ms|74.0 100.0 70.0 67.0 82.0 +++"
             String[] details = output[1].split(LOG_SEPARATOR);
             for (String detail : details) {
-                Matcher detailMatcher = DETAIL_REGEX.matcher(detail.trim());
+                Matcher detailMatcher = mDetailRegex.matcher(detail.trim());
                 if (detailMatcher.matches()) {
                     // get average of kpi values
                     List<Double> values = new ArrayList<>();
diff --git a/src/com/android/media/tests/CameraSettingsTest.java b/src/com/android/media/tests/CameraSettingsTest.java
index 7c64eb9..12bb0cf 100644
--- a/src/com/android/media/tests/CameraSettingsTest.java
+++ b/src/com/android/media/tests/CameraSettingsTest.java
@@ -29,6 +29,7 @@
 import com.android.tradefed.result.LogDataType;
 import com.android.tradefed.testtype.IDeviceTest;
 import com.android.tradefed.testtype.IRemoteTest;
+import com.android.tradefed.util.StreamUtil;
 
 import org.junit.Assert;
 
@@ -65,7 +66,7 @@
     private static final String TEST_RU = "CameraApplicationStress";
 
     private final String mOutputPath = "cameraStressOutput.txt";
-    private final int MAX_TIME_OUT = 90 * 60 * 1000; //90 mins
+    private static final int MAX_TIME_OUT = 90 * 60 * 1000; //90 mins
 
     @Option(name="testMethodName", description="Used to specify a specific test method to run")
     private String mTestMethodName = null;
@@ -157,13 +158,7 @@
         } catch (IOException e) {
             CLog.e(String.format("IOException reading from file: %s", e.toString()));
         } finally {
-            if (reader != null) {
-                try {
-                    reader.close();
-                } catch (IOException e) {
-                    CLog.e(String.format("IOException closing file: %s", e.toString()));
-                }
-            }
+            StreamUtil.close(reader);
         }
 
         // Output file looks like:
@@ -185,14 +180,14 @@
 
             Matcher expectedMatcher = EXPECTED_LOOP_COUNT_PATTERN.matcher(line);
             if (expectedMatcher.matches()) {
-                expectedCount = new Integer(expectedMatcher.group(3));
+                expectedCount = Integer.valueOf(expectedMatcher.group(3));
                 CLog.d(String.format("Found expected count for key \"%s\": %s",
                         key, expectedCount));
             }
 
             Matcher actualMatcher = ACTUAL_LOOP_COUNT_PATTERN.matcher(line);
             if (actualMatcher.matches()) {
-                actualCount = 1 + new Integer(actualMatcher.group(3));
+                actualCount = 1 + Integer.valueOf(actualMatcher.group(3));
                 CLog.d(String.format("Found actual count for key \"%s\": %s", key, actualCount));
             }
 
diff --git a/src/com/android/media/tests/CameraTestBase.java b/src/com/android/media/tests/CameraTestBase.java
index 212e65d..f8928b7 100644
--- a/src/com/android/media/tests/CameraTestBase.java
+++ b/src/com/android/media/tests/CameraTestBase.java
@@ -442,15 +442,16 @@
     // TODO: Leverage AUPT to collect system logs (meminfo, ION allocations and processes/threads)
     private class MeminfoTimer {
 
-        private final String LOG_HEADER =
+        private static final String LOG_HEADER =
                 "uptime,pssCameraDaemon,pssCameraApp,ramTotal,ramFree,ramUsed";
-        private final String DUMPSYS_MEMINFO_COMMAND = "dumpsys meminfo -c | grep -w -e ^ram " +
-                "-e ^time";
-        private final String[] DUMPSYS_MEMINFO_PROC = {
-                PROCESS_CAMERA_DAEMON, PROCESS_CAMERA_APP, PROCESS_MEDIASERVER };
-        private final int STATE_STOPPED = 0;
-        private final int STATE_SCHEDULED = 1;
-        private final int STATE_RUNNING = 2;
+        private static final String DUMPSYS_MEMINFO_COMMAND =
+                "dumpsys meminfo -c | grep -w -e " + "^ram -e ^time";
+        private String[] mDumpsysMemInfoProc = {
+            PROCESS_CAMERA_DAEMON, PROCESS_CAMERA_APP, PROCESS_MEDIASERVER
+        };
+        private static final int STATE_STOPPED = 0;
+        private static final int STATE_SCHEDULED = 1;
+        private static final int STATE_RUNNING = 2;
 
         private int mState = STATE_STOPPED;
         private Timer mTimer = new Timer(true); // run as a daemon thread
@@ -463,7 +464,7 @@
             mDelayMs = delayMs;
             mPeriodMs = periodMs;
             mCommand = DUMPSYS_MEMINFO_COMMAND;
-            for (String process : DUMPSYS_MEMINFO_PROC) {
+            for (String process : mDumpsysMemInfoProc) {
                 mCommand += " -e " + process;
             }
         }
@@ -599,11 +600,11 @@
         //    1 pool-6-thread-1
         // FIXME: Resolve the error "sh: syntax error: '|' unexpected" using the command below
         // $ /system/bin/ps -t -p %s | tr -s ' ' | cut -d' ' -f13- | sort | uniq -c | sort -nr"
-        private final String PS_COMMAND_FORMAT = "/system/bin/ps -t -p %s";
-        private final String PGREP_COMMAND_FORMAT = "pgrep %s";
-        private final int STATE_STOPPED = 0;
-        private final int STATE_SCHEDULED = 1;
-        private final int STATE_RUNNING = 2;
+        private static final String PS_COMMAND_FORMAT = "/system/bin/ps -t -p %s";
+        private static final String PGREP_COMMAND_FORMAT = "pgrep %s";
+        private static final int STATE_STOPPED = 0;
+        private static final int STATE_SCHEDULED = 1;
+        private static final int STATE_RUNNING = 2;
 
         private int mState = STATE_STOPPED;
         private Timer mTimer = new Timer(true); // run as a daemon thread
diff --git a/src/com/android/media/tests/VideoEditingPerformanceTest.java b/src/com/android/media/tests/VideoEditingPerformanceTest.java
index da9885c..b2b1ec6 100644
--- a/src/com/android/media/tests/VideoEditingPerformanceTest.java
+++ b/src/com/android/media/tests/VideoEditingPerformanceTest.java
@@ -73,7 +73,7 @@
     private static final String TEST_PACKAGE_NAME = "com.android.mediaframeworktest";
     private static final String TEST_RUNNER_NAME = ".MediaFrameworkPerfTestRunner";
 
-    private static final String mOutputPath = "VideoEditorPerformance.txt";
+    private static final String OUTPUT_PATH = "VideoEditorPerformance.txt";
 
     private final RegexTrie<String> mPatternMap = new RegexTrie<String>();
 
@@ -157,8 +157,7 @@
     private void cleanResultFile() throws DeviceNotAvailableException {
         String extStore =
             mTestDevice.getMountPoint(IDevice.MNT_EXTERNAL_STORAGE);
-        mTestDevice.executeShellCommand(String.format("rm %s/%s", extStore,
-                mOutputPath));
+        mTestDevice.executeShellCommand(String.format("rm %s/%s", extStore, OUTPUT_PATH));
     }
 
     /**
@@ -170,7 +169,7 @@
         File outputFile = null;
         InputStreamSource outputSource = null;
         try {
-            outputFile = mTestDevice.pullFileFromExternal(mOutputPath);
+            outputFile = mTestDevice.pullFileFromExternal(OUTPUT_PATH);
 
             if (outputFile == null) {
                 return;
@@ -182,7 +181,7 @@
                     outputFile.length(), outputFile));
             outputSource = new SnapshotInputStreamSource(new FileInputStream(
                     outputFile));
-            listener.testLog(mOutputPath, LogDataType.TEXT, outputSource);
+            listener.testLog(OUTPUT_PATH, LogDataType.TEXT, outputSource);
 
             // Parse the output file to upload aggregated metrics
             parseOutputFile(new FileInputStream(outputFile), listener);