Lambda Expression
Guys I had a question regarding lambda expressions in Java, when the abstract method from the functional interface requires a parameter, is the parameter not mandatory to be inputted in the code block you pass into the abstract method?
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i cant quite figure out what the second part of the question is. do you mean that the parameter is optional in the lambda? no, it's mandatory
if you do
the lambda needs to be
optionally you can also do
(String arg) -> /* something */;You can also name that parameter “_” since a couple of Java versions.
In case you don’t plan on using it.
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