/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.function.Function;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Integer l = ((Function<String,Integer>)(str) -> {
    System.out.println(str);
    return str.length();
}).apply("Hello world Function!");
	}
}

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