diff --git a/eo-parser/src/main/java/org/eolang/parser/XeEoListener.java b/eo-parser/src/main/java/org/eolang/parser/XeEoListener.java
index 063461feba..054dab26e5 100644
--- a/eo-parser/src/main/java/org/eolang/parser/XeEoListener.java
+++ b/eo-parser/src/main/java/org/eolang/parser/XeEoListener.java
@@ -58,7 +58,8 @@
     "PMD.TooManyMethods",
     "PMD.AvoidDuplicateLiterals",
     "PMD.ExcessivePublicCount",
-    "PMD.ExcessiveClassLength"
+    "PMD.ExcessiveClassLength",
+    "PMD.GodClass"
 })
 public final class XeEoListener implements EoListener, Iterable<Directive> {
     /**
@@ -184,7 +185,7 @@ public void enterMetas(final EoParser.MetasContext ctx) {
         for (final TerminalNode node : ctx.META()) {
             final String[] pair = node.getText().split(" ", 2);
             final String head = pair[0].substring(1);
-            if (head.equals(XeEoListener.TESTS_META)) {
+            if (XeEoListener.TESTS_META.equals(head)) {
                 this.tests = true;
             }
             this.dirs.add("meta")
@@ -241,49 +242,50 @@ public void exitCommentOptional(final EoParser.CommentOptionalContext ctx) {
 
     @Override
     public void enterCommentMandatory(final EoParser.CommentMandatoryContext ctx) {
-        if (!this.tests) {
-            final String comment = String.join(
-                "",
-                ctx.comment().COMMENTARY().getText().substring(1).trim(),
-                ctx.commentOptional().comment().stream().map(
-                    context -> context.COMMENTARY().getText().substring(1).trim()
-                ).collect(Collectors.joining(""))
-            );
-            final String length = String.format(
-                "Comment must be at least %d characters long",
-                XeEoListener.MIN_COMMENT_LENGTH
-            );
-            final String warning = "warning";
-            if (comment.isEmpty()) {
+        if(this.tests) {
+            return;
+        }
+        final String comment = String.join(
+            "",
+            ctx.comment().COMMENTARY().getText().substring(1).trim(),
+            ctx.commentOptional().comment().stream().map(
+                context -> context.COMMENTARY().getText().substring(1).trim()
+            ).collect(Collectors.joining(""))
+        );
+        final String length = String.format(
+            "Comment must be at least %d characters long",
+            XeEoListener.MIN_COMMENT_LENGTH
+        );
+        final String warning = "warning";
+        if (comment.isEmpty()) {
+            this.addError(ctx, "comment-length-check", warning, length);
+        } else {
+            if (comment.length() < XeEoListener.MIN_COMMENT_LENGTH) {
                 this.addError(ctx, "comment-length-check", warning, length);
-            } else {
-                if (comment.length() < XeEoListener.MIN_COMMENT_LENGTH) {
-                    this.addError(ctx, "comment-length-check", warning, length);
-                }
-                if (comment.chars().anyMatch(chr -> chr < 32 || chr > 127)) {
-                    this.addError(
-                        ctx,
-                        "comment-content-check",
-                        warning,
-                        "Comment must contain only ASCII printable characters: 0x20-0x7f"
-                    );
-                }
-                if (!Character.isUpperCase(comment.charAt(0))) {
-                    this.addError(
-                        ctx,
-                        "comment-start-character-check",
-                        warning,
-                        "Comment must start with capital letter"
-                    );
-                }
-                if (comment.charAt(comment.length() - 1) != '.') {
-                    this.addError(
-                        ctx,
-                        "comment-ending-check",
-                        warning,
-                        "Comment must end with dot"
-                    );
-                }
+            }
+            if (comment.chars().anyMatch(chr -> chr < 32 || chr > 127)) {
+                this.addError(
+                    ctx,
+                    "comment-content-check",
+                    warning,
+                    "Comment must contain only ASCII printable characters: 0x20-0x7f"
+                );
+            }
+            if (!Character.isUpperCase(comment.charAt(0))) {
+                this.addError(
+                    ctx,
+                    "comment-start-character-check",
+                    warning,
+                    "Comment must start with capital letter"
+                );
+            }
+            if (comment.charAt(comment.length() - 1) != '.') {
+                this.addError(
+                    ctx,
+                    "comment-ending-check",
+                    warning,
+                    "Comment must end with dot"
+                );
             }
         }
     }
diff --git a/eo-parser/src/main/java/org/eolang/parser/XePhiListener.java b/eo-parser/src/main/java/org/eolang/parser/XePhiListener.java
index cb576abcac..97e998664b 100644
--- a/eo-parser/src/main/java/org/eolang/parser/XePhiListener.java
+++ b/eo-parser/src/main/java/org/eolang/parser/XePhiListener.java
@@ -53,7 +53,8 @@
     "PMD.TooManyMethods",
     "PMD.AvoidDuplicateLiterals",
     "PMD.ExcessivePublicCount",
-    "PMD.ExcessiveClassLength"
+    "PMD.ExcessiveClassLength",
+    "PMD.GodClass"
 })
 public final class XePhiListener implements PhiListener, Iterable<Directive> {
     /**
@@ -324,7 +325,7 @@ public void enterDeltaBidning(final PhiParser.DeltaBidningContext ctx) {
             .start()
             .prop("data", "bytes")
             .prop("base", "org.eolang.bytes");
-        if (!ctx.BYTES().getText().equals("--")) {
+        if (!"--".equals(ctx.BYTES().getText())) {
             this.objects().data(ctx.BYTES().getText().replaceAll("-", " ").trim());
         }
         this.objects().leave();
@@ -337,7 +338,7 @@ public void exitDeltaBidning(final PhiParser.DeltaBidningContext ctx) {
 
     @Override
     public void enterLambdaBidning(final PhiParser.LambdaBidningContext ctx) {
-        if (!ctx.FUNCTION().getText().equals(XePhiListener.LAMBDA_PACKAGE)) {
+        if (!XePhiListener.LAMBDA_PACKAGE.equals(ctx.FUNCTION().getText())) {
             this.objects().prop("atom");
         }
     }
diff --git a/eo-parser/src/test/java/org/eolang/parser/EoSyntaxTest.java b/eo-parser/src/test/java/org/eolang/parser/EoSyntaxTest.java
index d735b73ac5..c63d944782 100644
--- a/eo-parser/src/test/java/org/eolang/parser/EoSyntaxTest.java
+++ b/eo-parser/src/test/java/org/eolang/parser/EoSyntaxTest.java
@@ -289,7 +289,7 @@ void storesAsBytes(final String code) throws IOException {
 
     @ParameterizedTest
     @ClasspathSource(value = "org/eolang/parser/typos/", glob = "**.yaml")
-    void checksTypoPacks(final String yml) throws IOException, NumberFormatException {
+    void checksTypoPacks(final String yml) throws IOException {
         final Yaml yaml = new Yaml();
         final Map<String, Object> map = yaml.load(yml);
         Assumptions.assumeTrue(map.get("skip") == null);
diff --git a/eo-parser/src/test/java/org/eolang/parser/StUnhexTest.java b/eo-parser/src/test/java/org/eolang/parser/StUnhexTest.java
index 729af488c5..61831e625d 100644
--- a/eo-parser/src/test/java/org/eolang/parser/StUnhexTest.java
+++ b/eo-parser/src/test/java/org/eolang/parser/StUnhexTest.java
@@ -39,7 +39,7 @@ final class StUnhexTest {
      * Empty message for JUnit Assertions.
      */
     private static final String EMPTY_MSG = "EMPTY MESSAGE";
-    
+
     @Test
     void convertsIntFromHexToEo() {
         MatcherAssert.assertThat(