== Why is this an issue?

Calling `String.isEmpty()` clearly communicates the code's intention, which is to test if the string is empty. Using `String.length() == 0` is less direct and makes the code less readable.

== How to fix it

=== Code examples

==== Noncompliant code example
[source,java,diff-id=1,diff-type=noncompliant]
----
if ("string".length() == 0) { /* … */ } // Noncompliant

if ("string".length() > 0) { /* … */ } // Noncompliant
----

==== Compliant solution
[source,java,diff-id=1,diff-type=compliant]
----
if ("string".isEmpty()){ /* … */ }

if (!"string".isEmpty()){ /* … */ }
----

== Resources
=== Documentation

* Java Documentation - https://docs.oracle.com/javase/7/docs/api/java/lang/String.html#isEmpty()[java.lang.String.isEmpty() method]