diff --git a/src/test/java/org/apache/commons/lang3/CharUtilsPerfRun.java b/src/test/java/org/apache/commons/lang3/CharUtilsPerfRun.java
index 925d05bcc..1aa4d9879 100644
--- a/src/test/java/org/apache/commons/lang3/CharUtilsPerfRun.java
+++ b/src/test/java/org/apache/commons/lang3/CharUtilsPerfRun.java
@@ -99,21 +99,21 @@ public class CharUtilsPerfRun {
 
     private void run() {
         this.printSysInfo();
-        long start;
-        start = System.currentTimeMillis();
-        this.printlnTotal("Do nothing", start);
+        long startMillis;
+        startMillis = System.currentTimeMillis();
+        this.printlnTotal("Do nothing", startMillis);
         run_CharUtils_isAsciiNumeric(WARM_UP);
-        start = System.currentTimeMillis();
+        startMillis = System.currentTimeMillis();
         run_CharUtils_isAsciiNumeric(COUNT);
-        this.printlnTotal("run_CharUtils_isAsciiNumeric", start);
+        this.printlnTotal("run_CharUtils_isAsciiNumeric", startMillis);
         run_inlined_CharUtils_isAsciiNumeric(WARM_UP);
-        start = System.currentTimeMillis();
+        startMillis = System.currentTimeMillis();
         run_inlined_CharUtils_isAsciiNumeric(COUNT);
-        this.printlnTotal("run_inlined_CharUtils_isAsciiNumeric", start);
+        this.printlnTotal("run_inlined_CharUtils_isAsciiNumeric", startMillis);
         run_CharSet(WARM_UP);
-        start = System.currentTimeMillis();
+        startMillis = System.currentTimeMillis();
         run_CharSet(COUNT);
-        this.printlnTotal("run_CharSet", start);
+        this.printlnTotal("run_CharSet", startMillis);
     }
 
     private int run_CharSet(final int loopCount) {
@@ -149,8 +149,8 @@ public class CharUtilsPerfRun {
         return t;
     }
 
-    private void printlnTotal(final String prefix, final long start) {
-        final long total = System.currentTimeMillis() - start;
-        System.out.println(prefix + ": " + NumberFormat.getInstance().format(total) + " milliseconds.");
+    private void printlnTotal(final String prefix, final long startMillis) {
+        final long totalMillis = System.currentTimeMillis() - startMillis;
+        System.out.println(prefix + ": " + NumberFormat.getInstance().format(totalMillis) + " milliseconds.");
     }
 }
diff --git a/src/test/java/org/apache/commons/lang3/RandomStringUtilsTest.java b/src/test/java/org/apache/commons/lang3/RandomStringUtilsTest.java
index 09df879d0..03e4f284e 100644
--- a/src/test/java/org/apache/commons/lang3/RandomStringUtilsTest.java
+++ b/src/test/java/org/apache/commons/lang3/RandomStringUtilsTest.java
@@ -142,9 +142,9 @@ public class RandomStringUtilsTest {
         assertEquals(50, r2.length(), "random(50) length");
         assertTrue(!r1.equals(r2), "!r1.equals(r2)");
 
-        final long seed = System.currentTimeMillis();
-        r1 = RandomStringUtils.random(50, 0, 0, true, true, null, new Random(seed));
-        r2 = RandomStringUtils.random(50, 0, 0, true, true, null, new Random(seed));
+        final long seedMillis = System.currentTimeMillis();
+        r1 = RandomStringUtils.random(50, 0, 0, true, true, null, new Random(seedMillis));
+        r2 = RandomStringUtils.random(50, 0, 0, true, true, null, new Random(seedMillis));
         assertEquals(r1, r2, "r1.equals(r2)");
 
         r1 = RandomStringUtils.random(0);
@@ -153,8 +153,8 @@ public class RandomStringUtilsTest {
 
     @Test
     public void testLANG805() {
-        final long seed = System.currentTimeMillis();
-        assertEquals("aaa", RandomStringUtils.random(3, 0, 0, false, false, new char[]{'a'}, new Random(seed)));
+        final long seedMillis = System.currentTimeMillis();
+        assertEquals("aaa", RandomStringUtils.random(3, 0, 0, false, false, new char[]{'a'}, new Random(seedMillis)));
     }
 
     @Test
diff --git a/src/test/java/org/apache/commons/lang3/concurrent/locks/LockingVisitorsTest.java b/src/test/java/org/apache/commons/lang3/concurrent/locks/LockingVisitorsTest.java
index ab06e6a53..b45c059df 100644
--- a/src/test/java/org/apache/commons/lang3/concurrent/locks/LockingVisitorsTest.java
+++ b/src/test/java/org/apache/commons/lang3/concurrent/locks/LockingVisitorsTest.java
@@ -48,7 +48,7 @@ public class LockingVisitorsTest {
         final boolean[] booleanValues, final LockVisitor<boolean[], ?> visitor) throws InterruptedException {
         final boolean[] runningValues = new boolean[10];
 
-        final long startTime = System.currentTimeMillis();
+        final long startTimeMillis = System.currentTimeMillis();
         for (int i = 0; i < booleanValues.length; i++) {
             final int index = i;
             final FailableConsumer<boolean[], ?> consumer = b -> {
@@ -70,12 +70,12 @@ public class LockingVisitorsTest {
         while (containsTrue(runningValues)) {
             Thread.sleep(100);
         }
-        final long endTime = System.currentTimeMillis();
+        final long endTimeMillis = System.currentTimeMillis();
         for (final boolean booleanValue : booleanValues) {
             assertTrue(booleanValue);
         }
         // WRONG assumption
-        // runTimeCheck.accept(endTime - startTime);
+        // runTimeCheck.accept(endTimeMillis - startTimeMillis);
     }
 
     protected void set(final boolean[] booleanArray, final int offset, final boolean value) {
diff --git a/src/test/java/org/apache/commons/lang3/time/FastDateFormatTest.java b/src/test/java/org/apache/commons/lang3/time/FastDateFormatTest.java
index 2de4dff56..df59b5bf6 100644
--- a/src/test/java/org/apache/commons/lang3/time/FastDateFormatTest.java
+++ b/src/test/java/org/apache/commons/lang3/time/FastDateFormatTest.java
@@ -262,13 +262,13 @@ public class FastDateFormatTest {
                         try {
                             final Date date = new Date();
 
-                            final long t0 = System.currentTimeMillis();
+                            final long t0Millis = System.currentTimeMillis();
                             final String formattedDate = printer.format(date);
-                            totalElapsed.addAndGet(0, System.currentTimeMillis() - t0);
+                            totalElapsed.addAndGet(0, System.currentTimeMillis() - t0Millis);
 
-                            final long t1 = System.currentTimeMillis();
+                            final long t1Millis = System.currentTimeMillis();
                             final Object pd = parser.parseObject(formattedDate);
-                            totalElapsed.addAndGet(1, System.currentTimeMillis() - t1);
+                            totalElapsed.addAndGet(1, System.currentTimeMillis() - t1Millis);
 
                             if (!date.equals(pd)) {
                                 failures.incrementAndGet();
diff --git a/src/test/java/org/apache/commons/lang3/time/StopWatchTest.java b/src/test/java/org/apache/commons/lang3/time/StopWatchTest.java
index f2a3434fc..60d309072 100644
--- a/src/test/java/org/apache/commons/lang3/time/StopWatchTest.java
+++ b/src/test/java/org/apache/commons/lang3/time/StopWatchTest.java
@@ -174,14 +174,14 @@ public class StopWatchTest {
 
     @Test
     public void testGetStartTime() {
-        final long beforeStopWatch = System.currentTimeMillis();
+        final long beforeStopWatchMillis = System.currentTimeMillis();
         final StopWatch watch = new StopWatch();
         assertThrows(IllegalStateException.class, watch::getStartTime,
             "Calling getStartTime on an unstarted StopWatch should throw an exception");
         watch.start();
 
         watch.getStartTime();
-        assertTrue(watch.getStartTime() >= beforeStopWatch);
+        assertTrue(watch.getStartTime() >= beforeStopWatchMillis);
 
         watch.reset();
         assertThrows(IllegalStateException.class, watch::getStartTime,