diff --git a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/ast/BinaryOp.java b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/ast/BinaryOp.java
index 0e53569546..a740fa67da 100644
--- a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/ast/BinaryOp.java
+++ b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/ast/BinaryOp.java
@@ -86,14 +86,14 @@ public enum BinaryOp implements InternalInterfaces.OperatorLike {
     /** Modulo {@code "%"} operator. */
     MOD("%");
 
-    /** Set of {@code &&} and {@code ||}. Use with {@link #isInfixExprWithOperator(JavaNode, Set)}. */
+    /** Set of {@code &&} and {@code ||}. Use with {@link net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils#isInfixExprWithOperator(JavaNode, Set)}. */
     public static final Set<BinaryOp> CONDITIONAL_OPS =
         CollectionUtil.immutableEnumSet(CONDITIONAL_AND, CONDITIONAL_OR);
-    /** Set of {@code <}, {@code <=}, {@code >=} and {@code >}. Use with {@link #isInfixExprWithOperator(JavaNode, Set)}. */
+    /** Set of {@code <}, {@code <=}, {@code >=} and {@code >}. Use with {@link net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils#isInfixExprWithOperator(JavaNode, Set)}. */
     public static final Set<BinaryOp> COMPARISON_OPS = CollectionUtil.immutableEnumSet(LE, GE, GT, LT);
-    /** Set of {@code ==} and {@code !=}. Use with {@link #isInfixExprWithOperator(JavaNode, Set)}. */
+    /** Set of {@code ==} and {@code !=}. Use with {@link net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils#isInfixExprWithOperator(JavaNode, Set)}. */
     public static final Set<BinaryOp> EQUALITY_OPS = CollectionUtil.immutableEnumSet(EQ, NE);
-    /** Set of {@code <<}, {@code >>} and {@code >>>}. Use with {@link #isInfixExprWithOperator(JavaNode, Set)}. */
+    /** Set of {@code <<}, {@code >>} and {@code >>>}. Use with {@link net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils#isInfixExprWithOperator(JavaNode, Set)}. */
     public static final Set<BinaryOp> SHIFT_OPS = CollectionUtil.immutableEnumSet(LEFT_SHIFT, RIGHT_SHIFT, UNSIGNED_RIGHT_SHIFT);
 
     private final String code;
@@ -212,25 +212,4 @@ public enum BinaryOp implements InternalInterfaces.OperatorLike {
     }
 
 
-    /**
-     * Tests if the node is an {@link ASTInfixExpression} with one of the given operators.
-     */
-    public static boolean isInfixExprWithOperator(@Nullable JavaNode e, Set<BinaryOp> operators) {
-        if (e instanceof ASTInfixExpression) {
-            ASTInfixExpression infix = (ASTInfixExpression) e;
-            return operators.contains(infix.getOperator());
-        }
-        return false;
-    }
-
-    /**
-     * Tests if the node is an {@link ASTInfixExpression} with the given operator.
-     */
-    public static boolean isInfixExprWithOperator(@Nullable JavaNode e, BinaryOp operator) {
-        if (e instanceof ASTInfixExpression) {
-            ASTInfixExpression infix = (ASTInfixExpression) e;
-            return operator == infix.getOperator();
-        }
-        return false;
-    }
 }
diff --git a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/ast/internal/JavaAstUtils.java b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/ast/internal/JavaAstUtils.java
index ac4d64a5e3..7214dbeb30 100644
--- a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/ast/internal/JavaAstUtils.java
+++ b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/ast/internal/JavaAstUtils.java
@@ -86,7 +86,7 @@ public final class JavaAstUtils {
 
 
     public static boolean isConditional(JavaNode ifx) {
-        return BinaryOp.isInfixExprWithOperator(ifx, BinaryOp.CONDITIONAL_OPS);
+        return isInfixExprWithOperator(ifx, BinaryOp.CONDITIONAL_OPS);
     }
 
     public static int numAlternatives(ASTSwitchBranch n) {
@@ -693,4 +693,26 @@ public final class JavaAstUtils {
             || it instanceof ASTSwitchStatement
             || it instanceof ASTLabeledStatement;
     }
+
+    /**
+     * Tests if the node is an {@link ASTInfixExpression} with one of the given operators.
+     */
+    public static boolean isInfixExprWithOperator(@Nullable JavaNode e, Set<BinaryOp> operators) {
+        if (e instanceof ASTInfixExpression) {
+            ASTInfixExpression infix = (ASTInfixExpression) e;
+            return operators.contains(infix.getOperator());
+        }
+        return false;
+    }
+
+    /**
+     * Tests if the node is an {@link ASTInfixExpression} with the given operator.
+     */
+    public static boolean isInfixExprWithOperator(@Nullable JavaNode e, BinaryOp operator) {
+        if (e instanceof ASTInfixExpression) {
+            ASTInfixExpression infix = (ASTInfixExpression) e;
+            return operator == infix.getOperator();
+        }
+        return false;
+    }
 }
diff --git a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/bestpractices/ForLoopCanBeForeachRule.java b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/bestpractices/ForLoopCanBeForeachRule.java
index 59eb021efd..542ebadedb 100644
--- a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/bestpractices/ForLoopCanBeForeachRule.java
+++ b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/bestpractices/ForLoopCanBeForeachRule.java
@@ -139,7 +139,7 @@ public class ForLoopCanBeForeachRule extends AbstractJavaRulechainRule {
      * @return The name, or null if it couldn't be found or the guard condition is not safe to refactor (then abort)
      */
     private @Nullable ASTNamedReferenceExpr findIterableFromCondition(ASTExpression guardCondition, ASTVariableDeclaratorId indexVar) {
-        if (!BinaryOp.isInfixExprWithOperator(guardCondition, BinaryOp.COMPARISON_OPS)) {
+        if (!JavaAstUtils.isInfixExprWithOperator(guardCondition, BinaryOp.COMPARISON_OPS)) {
             return null;
         }
 
diff --git a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/bestpractices/SimplifiableTestAssertionRule.java b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/bestpractices/SimplifiableTestAssertionRule.java
index 64c6c60af9..cf477cbc77 100644
--- a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/bestpractices/SimplifiableTestAssertionRule.java
+++ b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/bestpractices/SimplifiableTestAssertionRule.java
@@ -129,7 +129,7 @@ public class SimplifiableTestAssertionRule extends AbstractJavaRulechainRule {
 
 
     private ASTInfixExpression asEqualityExpr(ASTExpression node) {
-        if (BinaryOp.isInfixExprWithOperator(node, BinaryOp.EQUALITY_OPS)) {
+        if (JavaAstUtils.isInfixExprWithOperator(node, BinaryOp.EQUALITY_OPS)) {
             return (ASTInfixExpression) node;
         }
         return null;
diff --git a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/codestyle/UnnecessaryCastRule.java b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/codestyle/UnnecessaryCastRule.java
index 6cad24aebc..5d422e65fd 100644
--- a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/codestyle/UnnecessaryCastRule.java
+++ b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/codestyle/UnnecessaryCastRule.java
@@ -14,7 +14,7 @@ import static net.sourceforge.pmd.lang.java.ast.BinaryOp.MOD;
 import static net.sourceforge.pmd.lang.java.ast.BinaryOp.MUL;
 import static net.sourceforge.pmd.lang.java.ast.BinaryOp.SHIFT_OPS;
 import static net.sourceforge.pmd.lang.java.ast.BinaryOp.SUB;
-import static net.sourceforge.pmd.lang.java.ast.BinaryOp.isInfixExprWithOperator;
+import static net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils.isInfixExprWithOperator;
 
 import java.util.EnumSet;
 import java.util.Set;
diff --git a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/design/LawOfDemeterRule.java b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/design/LawOfDemeterRule.java
index fa100cfbc0..d6aa57e247 100644
--- a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/design/LawOfDemeterRule.java
+++ b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/design/LawOfDemeterRule.java
@@ -5,9 +5,9 @@
 package net.sourceforge.pmd.lang.java.rule.design;
 
 import static net.sourceforge.pmd.lang.java.ast.BinaryOp.INSTANCEOF;
-import static net.sourceforge.pmd.lang.java.ast.BinaryOp.isInfixExprWithOperator;
 import static net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils.isArrayLengthFieldAccess;
 import static net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils.isCallOnThisInstance;
+import static net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils.isInfixExprWithOperator;
 import static net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils.isRefToFieldOfThisClass;
 import static net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils.isThisOrSuper;
 import static net.sourceforge.pmd.lang.java.rule.internal.JavaRuleUtil.isGetterCall;
diff --git a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/design/SimplifyBooleanReturnsRule.java b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/design/SimplifyBooleanReturnsRule.java
index 24f4bb9f11..ae0a84cd17 100644
--- a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/design/SimplifyBooleanReturnsRule.java
+++ b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/design/SimplifyBooleanReturnsRule.java
@@ -12,10 +12,10 @@ import static net.sourceforge.pmd.lang.java.ast.BinaryOp.GT;
 import static net.sourceforge.pmd.lang.java.ast.BinaryOp.LE;
 import static net.sourceforge.pmd.lang.java.ast.BinaryOp.LT;
 import static net.sourceforge.pmd.lang.java.ast.BinaryOp.NE;
-import static net.sourceforge.pmd.lang.java.ast.BinaryOp.isInfixExprWithOperator;
 import static net.sourceforge.pmd.lang.java.ast.BinaryOp.opsWithGreaterPrecedence;
 import static net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils.areComplements;
 import static net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils.isBooleanLiteral;
+import static net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils.isInfixExprWithOperator;
 
 import java.util.EnumSet;
 import java.util.Set;
diff --git a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/design/SimplifyConditionalRule.java b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/design/SimplifyConditionalRule.java
index e465af2da8..fb44ca8fca 100644
--- a/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/design/SimplifyConditionalRule.java
+++ b/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/design/SimplifyConditionalRule.java
@@ -8,9 +8,9 @@ import static net.sourceforge.pmd.lang.java.ast.BinaryOp.CONDITIONAL_AND;
 import static net.sourceforge.pmd.lang.java.ast.BinaryOp.CONDITIONAL_OR;
 import static net.sourceforge.pmd.lang.java.ast.BinaryOp.INSTANCEOF;
 import static net.sourceforge.pmd.lang.java.ast.BinaryOp.NE;
-import static net.sourceforge.pmd.lang.java.ast.BinaryOp.isInfixExprWithOperator;
 import static net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils.getOtherOperandIfInInfixExpr;
 import static net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils.isBooleanNegation;
+import static net.sourceforge.pmd.lang.java.ast.internal.JavaAstUtils.isInfixExprWithOperator;
 import static net.sourceforge.pmd.lang.java.rule.internal.JavaRuleUtil.isNullCheck;
 
 import net.sourceforge.pmd.lang.java.ast.ASTExpression;