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Home/ Questions/Q 4382496
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Editorial Team
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Editorial Team
Asked: May 21, 20262026-05-21T12:47:11+00:00 2026-05-21T12:47:11+00:00

What would be the Java regular expression to match a Java method return type

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What would be the Java regular expression to match a Java method return type such as the following:

ArrayList<CodeObject>
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  1. Editorial Team
    Editorial Team
    2026-05-21T12:47:12+00:00Added an answer on May 21, 2026 at 12:47 pm

    Given the existence of:

     Map<List<String>, Map<List<String>, Collection<Integer>>>
    

    just for starters, I’m going to claim that this is a bad job for a regexp. Regexps are not good at matching nested items. See this post for the deleterious effects on mental health of trying.

    For the simple case I think the following would serve.

     \p{javaJavaIdentifierStart}\p{javaJavaIdentifierPart}*<\p{javaJavaIdentifierStart}\p{javaJavaIdentifierPart}*>
    
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