diff --git a/docs/java-custom-rules-example/src/test/java/org/sonar/samples/java/checks/AvoidBrandInMethodNamesRuleTest.java b/docs/java-custom-rules-example/src/test/java/org/sonar/samples/java/checks/AvoidBrandInMethodNamesRuleTest.java
index 66444b73e69..3fb4f5766c1 100644
--- a/docs/java-custom-rules-example/src/test/java/org/sonar/samples/java/checks/AvoidBrandInMethodNamesRuleTest.java
+++ b/docs/java-custom-rules-example/src/test/java/org/sonar/samples/java/checks/AvoidBrandInMethodNamesRuleTest.java
@@ -5,17 +5,10 @@
 package org.sonar.samples.java.checks;
 
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.extension.RegisterExtension;
-import org.slf4j.event.Level;
-import org.sonar.api.testfixtures.log.LogTesterJUnit5;
 import org.sonar.java.checks.verifier.CheckVerifier;
 
 class AvoidBrandInMethodNamesRuleTest {
 
-  // Set a LogTester to see the Syntax Tree when running tests and executing the rule
-  @RegisterExtension
-  public LogTesterJUnit5 logTester = new LogTesterJUnit5().setLevel(Level.DEBUG);
-
   @Test
   void detected() {
     // Verifies that the check will raise the adequate issues with the expected message.
diff --git a/docs/java-custom-rules-example/src/test/java/org/sonar/samples/java/checks/SecurityAnnotationMandatoryRuleTest.java b/docs/java-custom-rules-example/src/test/java/org/sonar/samples/java/checks/SecurityAnnotationMandatoryRuleTest.java
index 65777342af6..40bd9574119 100644
--- a/docs/java-custom-rules-example/src/test/java/org/sonar/samples/java/checks/SecurityAnnotationMandatoryRuleTest.java
+++ b/docs/java-custom-rules-example/src/test/java/org/sonar/samples/java/checks/SecurityAnnotationMandatoryRuleTest.java
@@ -5,17 +5,10 @@
 package org.sonar.samples.java.checks;
 
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.extension.RegisterExtension;
-import org.slf4j.event.Level;
-import org.sonar.api.testfixtures.log.LogTesterJUnit5;
 import org.sonar.java.checks.verifier.CheckVerifier;
 
 class SecurityAnnotationMandatoryRuleTest {
 
-  // Set a LogTester to see the Syntax Tree when running tests and executing the rule
-  @RegisterExtension
-  public LogTesterJUnit5 logTester = new LogTesterJUnit5().setLevel(Level.DEBUG);
-
   @Test
   void detected() {
     // Use an instance of the check under test to raise the issue.
diff --git a/external-reports/src/test/java/org/sonar/java/externalreport/CheckstyleSensorTest.java b/external-reports/src/test/java/org/sonar/java/externalreport/CheckstyleSensorTest.java
index a5a2aecfa00..852915eeb34 100644
--- a/external-reports/src/test/java/org/sonar/java/externalreport/CheckstyleSensorTest.java
+++ b/external-reports/src/test/java/org/sonar/java/externalreport/CheckstyleSensorTest.java
@@ -19,7 +19,6 @@
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Path;
-import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.List;
 import javax.annotation.Nullable;
@@ -42,7 +41,7 @@
 
 class CheckstyleSensorTest {
 
-  private static final Path PROJECT_DIR = Paths.get("src", "test", "resources", "checkstyle")
+  private static final Path PROJECT_DIR = Path.of("src", "test", "resources", "checkstyle")
     .toAbsolutePath().normalize();
 
   private static SensorContextTester sensorContext = SensorContextTester.create(PROJECT_DIR);
diff --git a/external-reports/src/test/java/org/sonar/java/externalreport/SpotBugsSensorTest.java b/external-reports/src/test/java/org/sonar/java/externalreport/SpotBugsSensorTest.java
index af7f3db9f36..741649cb53b 100644
--- a/external-reports/src/test/java/org/sonar/java/externalreport/SpotBugsSensorTest.java
+++ b/external-reports/src/test/java/org/sonar/java/externalreport/SpotBugsSensorTest.java
@@ -19,7 +19,6 @@
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Path;
-import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.List;
 import javax.annotation.Nullable;
@@ -43,7 +42,7 @@
 
 class SpotBugsSensorTest {
 
-  private static final Path PROJECT_DIR = Paths.get("src", "test", "resources", "spotbugs")
+  private static final Path PROJECT_DIR = Path.of("src", "test", "resources", "spotbugs")
     .toAbsolutePath().normalize();
 
   private static SensorContextTester sensorContext = SensorContextTester.create(PROJECT_DIR);
diff --git a/java-checks-testkit/src/test/java/org/sonar/java/checks/verifier/FilesUtilsTest.java b/java-checks-testkit/src/test/java/org/sonar/java/checks/verifier/FilesUtilsTest.java
index 8c3104f1107..a4476c336b5 100644
--- a/java-checks-testkit/src/test/java/org/sonar/java/checks/verifier/FilesUtilsTest.java
+++ b/java-checks-testkit/src/test/java/org/sonar/java/checks/verifier/FilesUtilsTest.java
@@ -27,11 +27,9 @@
 import static org.assertj.core.api.Assertions.assertThat;
 
 class FilesUtilsTest {
-  @TempDir
-  public Path temp;
 
   @Test
-  void verify_get_classpath_files() throws IOException {
+  void verify_get_classpath_files(@TempDir Path temp) throws IOException {
     Path tmp = Files.createDirectory(temp.resolve("tmp"));
     Path jar = tmp.resolve("test.jar");
     Path zip = tmp.resolve("test.zip");