interface Args
{ String compute(String s); }

public class ArgsDemo
{
	public void m(Args obj, String s)
	{ System.out.println(obj.compute(s)); 
	 }
	
	public static void main(String[] args)
	{
		ArgsDemo ad = new ArgsDemo();
		
		Args L1 = (str) -> str.toUpperCase();
		ad.m(L1, args[0]);
		
		ad.m((str)->str.toLowerCase(), args[0]);
	}
}