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Editorial Team
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Asked: 2026-06-03T14:28:33+00:00

Cannot define ArrayList<char> as argument of validate . Why it cannot be done? When

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Cannot define ArrayList<char> as argument of validate. Why it cannot be done? When trying ArrayList<?> it works. Why? Should ArrayList<?> be used instead of ArrayList<char>? What is the difference?

public boolean validate(ArrayList<char> args){ ... }

Error: Syntax error on token "char", Dimensions expected after this token

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1 Answer

  1. Editorial Team
    public boolean validate(List<Character> args){ ... }

    It has to be the wrapper type – Character – List<Character>. You can’t use generics with primitive types.

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