rspec/rules/S5994/java/rule.adoc

== Why is this an issue?

include::../description.adoc[]


=== Noncompliant code example

[source,java]
----
Pattern pattern1 = Pattern.compile("a++abc");       // Noncompliant, the second 'a' never matches
Pattern pattern2 = Pattern.compile("\\d*+[02468]"); // Noncompliant, the sub-pattern "[02468]" never matches
----


=== Compliant solution

[source,java]
----
Pattern pattern1 = Pattern.compile("aa++bc");            // Compliant, for example it can match "aaaabc"
Pattern pattern2 = Pattern.compile("\\d*+(?<=[02468])"); // Compliant, for example it can match an even number like "1234"
----

ifdef::env-github,rspecator-view[]

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== Implementation Specification
(visible only on this page)

include::message.adoc[]

include::highlighting.adoc[]

endif::env-github,rspecator-view[]