Resolve simple Sonar code issues

build-helper-mojo/src/test/java/com/oracle/wls/buildhelper/BuildHelperMojoTest.java

@@ -1,4 +1,4 @@
-// Copyright (c) 2020, 2021, Oracle and/or its affiliates.
+// Copyright (c) 2020, 2022, Oracle and/or its affiliates.
 // Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
 
 package com.oracle.wls.buildhelper;
@@ -26,7 +26,7 @@
 import static org.hamcrest.Matchers.notNullValue;
 import static org.hamcrest.Matchers.nullValue;
 
-public class BuildHelperMojoTest {
+class BuildHelperMojoTest {
 
   private final BuildHelperMojo mojo = new BuildHelperMojo();
   private final List<Memento> mementos = new ArrayList<>();
@@ -46,55 +46,55 @@ public void tearDown() {
   }
 
   @Test
-  public void helperImplementsMojo() {
+  void helperImplementsMojo() {
     assertThat(mojo, Matchers.instanceOf(AbstractMojo.class));
   }
 
   @Test
-  public void mojoHasGoalAnnotation() {
+  void mojoHasGoalAnnotation() {
     assertThat(mojoTestSupport.getClassAnnotation(), notNullValue());
   }
 
   @Test
-  public void mojoAnnotatedWithName() {
+  void mojoAnnotatedWithName() {
     assertThat(mojoTestSupport.getClassAnnotation().get("name"), equalTo("copy"));
   }
 
   @Test
-  public void mojoAnnotatedWithDefaultPhase() {
+  void mojoAnnotatedWithDefaultPhase() {
     assertThat(mojoTestSupport.getClassAnnotation().get("defaultPhase"), equalTo(PROCESS_RESOURCES));
   }
 
   @Test
-  public void hasRequiredSourceFileParameter() throws NoSuchFieldException {
+  void hasRequiredSourceFileParameter() throws NoSuchFieldException {
     assertThat(mojoTestSupport.getParameterField("sourceFile").getType(), equalTo(String.class));
     assertThat(mojoTestSupport.getParameterAnnotation("sourceFile").get("required"), is(true));
   }
 
   @Test
-  public void hasAnnotatedTargetFileField_withNoDefault() throws NoSuchFieldException {
+  void hasAnnotatedTargetFileField_withNoDefault() throws NoSuchFieldException {
     assertThat(mojoTestSupport.getParameterField("targetFile").getType(), equalTo(File.class));
     assertThat(mojoTestSupport.getParameterAnnotation("targetFile").get("defaultValue"), nullValue());
   }
 
   @Test
-  public void targetFileField_isRequired() throws NoSuchFieldException {
+  void targetFileField_isRequired() throws NoSuchFieldException {
     assertThat(mojoTestSupport.getParameterAnnotation("targetFile").get("required"), is(true));
   }
 
   @Test
-  public void hasAnnotatedUserDirFileField_withNullDefault() throws NoSuchFieldException {
+  void hasAnnotatedUserDirFileField_withNullDefault() throws NoSuchFieldException {
     assertThat(mojoTestSupport.getParameterField("userDir").getType(), equalTo(File.class));
     assertThat(mojoTestSupport.getParameterAnnotation("userDir").get("defaultValue"), nullValue());
   }
 
   @Test
-  public void userDirField_isNotRequired() throws NoSuchFieldException {
+  void userDirField_isNotRequired() throws NoSuchFieldException {
     assertThat(mojoTestSupport.getParameterAnnotation("userDir").get("required"), nullValue());
   }
 
   @Test
-  public void whenSourceAndTargetAbsolute_useAbsolutePaths() throws Exception {
+  void whenSourceAndTargetAbsolute_useAbsolutePaths() throws Exception {
     setMojoParameter("sourceFile", "/root/source");
     setMojoParameter("targetFile", new File("/root/target"));
 
@@ -105,7 +105,7 @@ public void whenSourceAndTargetAbsolute_useAbsolutePaths() throws Exception {
   }
 
   @Test
-  public void whenSourcePathIsRelative_computeAbsoluteRelativeToUserDir() throws Exception {
+  void whenSourcePathIsRelative_computeAbsoluteRelativeToUserDir() throws Exception {
     setMojoParameter("sourceFile", "source");
     setMojoParameter("targetFile", new File("/root/target"));
     setMojoParameter("userDir", new File("/root/nested"));
@@ -117,7 +117,7 @@ public void whenSourcePathIsRelative_computeAbsoluteRelativeToUserDir() throws E
   }
 
   @Test
-  public void whenSourcePathIsRelativeAndNoUserDir_useSystemProperty() throws Exception {
+  void whenSourcePathIsRelativeAndNoUserDir_useSystemProperty() throws Exception {
     System.setProperty("user.dir", "/user");
     setMojoParameter("sourceFile", "source");
     setMojoParameter("targetFile", new File("/root/target"));

wls-exporter-core/src/main/java/com/oracle/wls/exporter/ConfigurationDisplay.java

@@ -1,4 +1,4 @@
-// Copyright (c) 2021, Oracle and/or its affiliates.
+// Copyright (c) 2021, 2022, Oracle and/or its affiliates.
 // Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
 
 package com.oracle.wls.exporter;
@@ -8,6 +8,10 @@
 
 public class ConfigurationDisplay {
 
+  private ConfigurationDisplay() {
+    // no-op
+  }
+
   public static void displayConfiguration(OutputStream outputStream) {
       try (PrintStream ps = new PrintStream(outputStream)) {
           ps.println("<p>Current Configuration</p>");

wls-exporter-core/src/main/java/com/oracle/wls/exporter/DemoInputs.java

@@ -7,6 +7,11 @@
  * @author Russell Gold
  */
 class DemoInputs {
+
+    private DemoInputs() {
+        // no-op
+    }
+
     @SuppressWarnings("unused")
     static final String YAML_STRING = "---\n" +
             "startDelaySeconds: 5\n" +

wls-exporter-core/src/main/java/com/oracle/wls/exporter/LiveConfiguration.java

@@ -24,6 +24,10 @@
  */
 public class LiveConfiguration {
 
+    private LiveConfiguration() {
+        // no-op
+    }
+
     /** The address used to access WLS (cannot use the address found in the request due to potential server-side request forgery. */
     static final String WLS_HOST;
 
@@ -190,7 +194,7 @@ public static void updateConfiguration() {
             installNewConfiguration(updater.getUpdate());
     }
 
-    private synchronized static void installNewConfiguration(ConfigurationUpdate update) {
+    private static synchronized void installNewConfiguration(ConfigurationUpdate update) {
         if (update.getTimestamp() > timestamp) {
             getConfig().replace(toConfiguration(update.getConfiguration()));
             timestamp = update.getTimestamp();

wls-exporter-core/src/main/java/com/oracle/wls/exporter/domain/MapUtils.java

@@ -1,4 +1,4 @@
-// Copyright (c) 2017, 2020, Oracle and/or its affiliates.
+// Copyright (c) 2017, 2022, Oracle and/or its affiliates.
 // Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
 
 package com.oracle.wls.exporter.domain;
@@ -13,6 +13,9 @@
  */
 public class MapUtils {
 
+    private MapUtils() {
+        // no-op
+    }
     private static final String ILLEGAL_VALUE_FORMAT = "Illegal value for %s: %s. Value must be %s";
 
     /**
@@ -51,8 +54,8 @@ static Boolean getBooleanValue(Map<String, Object> map, String key) {
         throw createBadTypeException(key, value, "a boolean");
     }
 
-    private final static String[] TRUE_VALUES = {"true", "t", "yes", "on", "y"};
-    private final static String[] FALSE_VALUES = {"false", "f", "no", "off", "n"};
+    private static final String[] TRUE_VALUES = {"true", "t", "yes", "on", "y"};
+    private static final String[] FALSE_VALUES = {"false", "f", "no", "off", "n"};
 
     private static boolean inValues(Object candidate, String... matches) {
         for (String match : matches)

wls-exporter-core/src/main/java/com/oracle/wls/exporter/domain/SnakeCaseUtil.java

@@ -1,4 +1,4 @@
-// Copyright (c) 2017, 2020, Oracle and/or its affiliates.
+// Copyright (c) 2017, 2022, Oracle and/or its affiliates.
 // Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
 
 package com.oracle.wls.exporter.domain;
@@ -11,6 +11,11 @@
  * @author Russell Gold
  */
 public class SnakeCaseUtil {
+
+    private SnakeCaseUtil() {
+        // no-op
+    }
+
     private static final Pattern SNAKE_CASE_PATTERN = Pattern.compile("([a-z0-9])([A-Z])");
 
     static String convert(String s) {

wls-exporter-core/src/main/java/com/oracle/wls/exporter/webapp/ServletUtils.java

@@ -1,4 +1,4 @@
-// Copyright (c) 2021, Oracle and/or its affiliates.
+// Copyright (c) 2021, 2022, Oracle and/or its affiliates.
 // Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
 
 package com.oracle.wls.exporter.webapp;
@@ -12,6 +12,10 @@
 
 public class ServletUtils {
 
+  private ServletUtils() {
+    // no-op
+  }
+
   /** The path to the configuration file within the web application. */
   public static final String CONFIG_YML = "/config.yml";
 

wls-exporter-core/src/test/java/com/oracle/wls/exporter/ConfigurationFormCallTest.java

@@ -20,7 +20,7 @@
 import static org.hamcrest.Matchers.startsWith;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
-public class ConfigurationFormCallTest {
+class ConfigurationFormCallTest {
 
   private static final String CONFIGURATION =
         "hostName: " + HOST_NAME + "\n" +
@@ -72,7 +72,7 @@ public void setUp() {
   }
 
   @Test
-  public void whenNoConfigurationSpecified_reportFailure() {
+  void whenNoConfigurationSpecified_reportFailure() {
     assertThrows(RuntimeException.class, () -> handleConfigurationFormCall(context));
   }
 
@@ -83,35 +83,35 @@ private void handleConfigurationFormCall(InvocationContextStub context) throws I
   }
 
   @Test
-  public void whenRequestUsesHttp_authenticateWithHttp() throws Exception {
+  void whenRequestUsesHttp_authenticateWithHttp() throws Exception {
     handleConfigurationFormCall(context.withConfigurationForm("replace", CONFIGURATION));
 
     assertThat(factory.getClientUrl(), startsWith("http:"));
   }
 
   @Test
-  public void whenRequestUsesHttps_authenticateWithHttps() throws Exception {
+  void whenRequestUsesHttps_authenticateWithHttps() throws Exception {
     handleConfigurationFormCall(context.withHttps().withConfigurationForm("replace", CONFIGURATION));
 
     assertThat(factory.getClientUrl(), startsWith("https:"));
   }
 
   @Test
-  public void afterUploadWithReplace_useNewConfiguration() throws Exception {
+  void afterUploadWithReplace_useNewConfiguration() throws Exception {
     handleConfigurationFormCall(context.withConfigurationForm("replace", CONFIGURATION));
 
     assertThat(LiveConfiguration.asString(), equalTo(CONFIGURATION));
   }
 
   @Test
-  public void afterUpload_redirectToMainPage() throws Exception {
+  void afterUpload_redirectToMainPage() throws Exception {
     handleConfigurationFormCall(context.withConfigurationForm("replace", CONFIGURATION));
 
     assertThat(context.getRedirectLocation(), equalTo(WebAppConstants.MAIN_PAGE));
   }
 
   @Test
-  public void whenRestPortInaccessible_switchToSpecifiedPort() throws Exception {
+  void whenRestPortInaccessible_switchToSpecifiedPort() throws Exception {
     LiveConfiguration.loadFromString(CONFIGURATION_WITH_REST_PORT);
     factory.throwConnectionFailure("localhost", REST_PORT);
 
@@ -121,14 +121,14 @@ public void whenRestPortInaccessible_switchToSpecifiedPort() throws Exception {
   }
 
   @Test
-  public void afterUploadWithAppend_useCombinedConfiguration() throws Exception {
+  void afterUploadWithAppend_useCombinedConfiguration() throws Exception {
     handleConfigurationFormCall(context.withConfigurationForm("append", ADDED_CONFIGURATION));
 
     assertThat(LiveConfiguration.asString(), equalTo(COMBINED_CONFIGURATION));
   }
 
   @Test
-  public void whenSelectedFileIsNotYaml_reportError() throws Exception {
+  void whenSelectedFileIsNotYaml_reportError() throws Exception {
     handleConfigurationFormCall(context.withConfigurationForm("replace", NON_YAML));
 
     assertThat(context.getResponse(), containsString(ConfigurationException.NOT_YAML_FORMAT));
@@ -138,7 +138,7 @@ public void whenSelectedFileIsNotYaml_reportError() throws Exception {
         "this is not yaml\n";
 
   @Test
-  public void whenSelectedFileHasPartialYaml_reportError() throws Exception {
+  void whenSelectedFileHasPartialYaml_reportError() throws Exception {
     handleConfigurationFormCall(context.withConfigurationForm("replace", PARTIAL_YAML));
 
     assertThat(context.getResponse(), containsString(ConfigurationException.BAD_YAML_FORMAT));
@@ -148,7 +148,7 @@ public void whenSelectedFileHasPartialYaml_reportError() throws Exception {
         "queries:\nkey name\n";
 
   @Test
-  public void whenSelectedFileHasBadBooleanValue_reportError() throws Exception {
+  void whenSelectedFileHasBadBooleanValue_reportError() throws Exception {
     handleConfigurationFormCall(context.withConfigurationForm("append", ADDED_CONFIGURATION_WITH_BAD_BOOLEAN));
 
     assertThat(context.getResponse(), containsString(BAD_BOOLEAN_STRING));
@@ -162,14 +162,14 @@ public void whenSelectedFileHasBadBooleanValue_reportError() throws Exception {
               "    values: [age, sex]\n";
 
   @Test
-  public void afterSelectedFileHasBadBooleanValue_configurationIsUnchanged() throws Exception {
+  void afterSelectedFileHasBadBooleanValue_configurationIsUnchanged() throws Exception {
     handleConfigurationFormCall(context.withConfigurationForm("append", ADDED_CONFIGURATION_WITH_BAD_BOOLEAN));
 
     assertThat(LiveConfiguration.asString(), equalTo(CONFIGURATION));
   }
 
   @Test
-  public void whenServerSends403StatusOnGet_returnToClient() throws Exception {
+  void whenServerSends403StatusOnGet_returnToClient() throws Exception {
     factory.reportNotAuthorized();
 
     handleConfigurationFormCall(context.withConfigurationForm("replace", CONFIGURATION));
@@ -178,7 +178,7 @@ public void whenServerSends403StatusOnGet_returnToClient() throws Exception {
   }
 
   @Test
-  public void whenServerSends401StatusOnGet_returnToClient() throws Exception {
+  void whenServerSends401StatusOnGet_returnToClient() throws Exception {
     factory.reportAuthenticationRequired("Test-Realm");
 
     handleConfigurationFormCall(context.withConfigurationForm("replace", CONFIGURATION));

wls-exporter-core/src/test/java/com/oracle/wls/exporter/ConfigurationPutCallTest.java

@@ -59,21 +59,21 @@ private void handleConfigurationPutCall(InvocationContextStub context) throws IO
   }
 
   @Test
-  public void whenSpecifiedConfigurationHasBadBooleanValue_reportError() throws Exception {
+  void whenSpecifiedConfigurationHasBadBooleanValue_reportError() throws Exception {
     handleConfigurationPutCall(context.withConfiguration("application/yaml", CONFIGURATION_WITH_BAD_BOOLEAN));
 
     assertThat(context.getResponseStatus(), equalTo(HttpURLConnection.HTTP_BAD_REQUEST));
   }
 
   @Test
-  public void updateSpecifiedConfiguration() throws Exception {
+  void updateSpecifiedConfiguration() throws Exception {
     handleConfigurationPutCall(context.withConfiguration("application/yaml", YAML_CONFIGURATION));
 
     assertThat(LiveConfiguration.asString(), equalTo(YAML_CONFIGURATION));
   }
 
   @Test
-  public void updateConfigurationWithJson() throws Exception {
+  void updateConfigurationWithJson() throws Exception {
     handleConfigurationPutCall(context.withConfiguration("application/json", JSON_CONFIGURATION));
 
     assertThat(LiveConfiguration.asString(), equalTo(YAML_CONFIGURATION));