Position literals first in comparisons, if the second argument is null then NullPointerExceptions
can be avoided, they will just return false. Example:
<pre>
class Foo {
  boolean bar(String x) {
    return x.equalsIgnoreCase("2"); // should be "2".equalsIgnoreCase(x)
  }
}
</pre>

<p>
  This rule is deprecated, use {rule:squid:S1132} instead.
</p>