rspec/rules/S3027/java/rule.adoc

An ``++indexOf++`` or ``++lastIndexOf++`` call with a single letter ``++String++`` can be made more performant by switching to a call with a ``++char++`` argument.

== Noncompliant Code Example

----
String myStr = "Hello World";
// ...
int pos = myStr.indexOf("W");  // Noncompliant
// ...
int otherPos = myStr.lastIndexOf("r"); // Noncompliant
// ...
----

== Compliant Solution

----
String myStr = "Hello World";
// ...
int pos = myStr.indexOf('W'); 
// ...
int otherPos = myStr.lastIndexOf('r');
// ...
----