How do you implement conditional step flow in Spring batch?

Next element is an transitional element in step that instructs the Job which Step to execute next.

<job id="job">
    <step id="stepA" parent="s1">
        <next on="*" to="stepB" />
        <next on="FAILED" to="stepC" />
    </step>
    <step id="stepB" parent="s2" next="stepC" />
    <step id="stepC" parent="s3" />
</job>

The "on" attribute of a transition element uses a simple pattern-matching scheme to match the ExitStatus that results from the execution of the Step. Only two special characters are allowed in the pattern: "*" will zero or more characters and "?" will match exactly one character.

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