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== Noncompliant Code Example

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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
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== Compliant Solution

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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"
----

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== Implementation Specification
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