ToLongFunction represents a function that produces a long-valued result. This is the long-producing primitive specialization for Function.
The following example shows how to use ToLongFunction
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import java.util.function.ToLongFunction; // w w w.j a va2 s .c o m public class Main { public static void main(String[] args) { ToLongFunction<String> i = (x)-> Long.parseLong(x); System.out.println(i.applyAsLong("2")); } }
The code above generates the following result.