/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* 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
	{
		List<String> list = new ArrayList<>();
		list.add("a");
		list.add("b");
		list.add("c");
		list.replaceAll(str -> str.toUpperCase());
		System.out.println(list);
 
		//Function<String, Integer> func = Integer::parseInt;
		System.out.println(Integer::parseInt.apply("3"));
}
}

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