rspec/rules/S1157/java/rule.adoc

Using ``++toLowerCase()++`` or ``++toUpperCase()++`` to make case insensitive comparisons is inefficient because it requires the creation of temporary, intermediate ``++String++`` objects.


== Noncompliant Code Example

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boolean result1 = foo.toUpperCase().equals(bar);             // Noncompliant
boolean result2 = foo.equals(bar.toUpperCase());             // Noncompliant
boolean result3 = foo.toLowerCase().equals(bar.LowerCase()); // Noncompliant
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== Compliant Solution

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boolean result = foo.equalsIgnoreCase(bar);                  // Compliant
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== Exceptions

No issue will be raised when a locale is specified because the result could be different from "equalsIgnoreCase". (e.g.: using the Turkish locale)

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boolean result1 = foo.toUpperCase(locale).equals(bar);             // Compliant
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