diff --git a/rules/S3033/java/rule.adoc b/rules/S3033/java/rule.adoc
index 0fdaf09320b..c0e553e73b1 100644
--- a/rules/S3033/java/rule.adoc
+++ b/rules/S3033/java/rule.adoc
@@ -1,31 +1,96 @@
 == Why is this an issue?
 
-Assembling a ``++StringBuilder++`` or ``++StringBuffer++`` into a ``++String++`` merely to see if it's empty is a waste of cycles. Instead, jump right to the heart of the matter and get its ``++.length()++`` instead.
+It is inefficient to build a ``++String++`` from a ``++StringBuilder++`` or ``++StringBuffer++`` just to check if it's empty. Instead, directly use the ``++.isEmpty++`` method.
 
 
 === Noncompliant code example
 
-[source,java]
+[source,java,diff-id=1,diff-type=noncompliant]
 ----
 StringBuilder sb = new StringBuilder();
 // ...
 if ("".equals(sb.toString()) { // Noncompliant
   // ...
 }
+if (sb.toString().isEmpty()) { // Noncompliant
+  // ...
+}
 ----
 
-
 === Compliant solution
 
-[source,java]
+[source,java,diff-id=1,diff-type=compliant]
 ----
 StringBuilder sb = new StringBuilder();
 // ...
-if (sb.length() == 0) {
+if (sb.isEmpty()) {
+  // ...
+}
+if (sb.isEmpty()) {
   // ...
 }
 ----
 
+=== Benchmarks
+
+[options="header"]
+|===
+| Method| Runtime| Average time| Error margin
+| isEmpty| Temurin 21| 6.60 ns/op| ±0.58 ns/op
+| length| Temurin 21| 6.89 ns/op| ±0.22 ns/op
+| toStringEquals| Temurin 21| 10.90 ns/op| ±0.62 ns/op
+| toStringIsEmpty| Temurin 21| 11.07 ns/op| ±0.94 ns/op
+|===
+
+
+The results were generated by running the following snippet with https://github.com/openjdk/jmh[JMH]:
+
+[source,java]
+----
+private String[] str = {"a", "b", "c", "d", "e"};
+private StringBuilder sb = new StringBuilder();
+
+@Setup(Level.Iteration)
+public void setup() {
+  sb = new StringBuilder();
+  for (String s : str) {
+    sb.append(s);
+  }
+}
+
+@Benchmark
+public StringBuilder toStringEquals() {
+  if ("".equals((sb.toString()))) {
+    return sb;
+  }
+  return new StringBuilder();
+}
+
+@Benchmark
+public StringBuilder toStringIsEmpty() {
+  if (sb.toString().isEmpty()) {
+    return sb;
+  }
+  return new StringBuilder();
+}
+
+@Benchmark
+public StringBuilder length() {
+  if (sb.length() == 0) {
+    return sb;
+  }
+  return new StringBuilder();
+}
+
+@Benchmark
+public StringBuilder isEmpty() {
+  if (sb.isEmpty()) {
+    return sb;
+  }
+  return new StringBuilder();
+}
+----
+
 
 ifdef::env-github,rspecator-view[]