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/* 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 class Move {
 
        private int score;
 
        public Move(int score) {
            this.score = score;
        }
 
        public int getScore() {
            return score;
        }
 
        public int getScore(boolean doubleIt) {
            return score * 2;
        }
    }
 
    public static void main( String[] args )
    {
 
        List<Move> moves = new ArrayList<>();
        moves.sort(Comparator.comparingInt(Move::getScore).reversed());
 
    }
}

Main.java:31: error: incompatible types: cannot infer type-variable(s) T
        moves.sort(Comparator.comparingInt(Move::getScore).reversed());
                                          ^
    (argument mismatch; invalid method reference
      incompatible types: Object cannot be converted to boolean)
  where T is a type-variable:
    T extends Object declared in method <T>comparingInt(ToIntFunction<? super T>)
Main.java:31: error: invalid method reference
        moves.sort(Comparator.comparingInt(Move::getScore).reversed());
                                           ^
  non-static method getScore() cannot be referenced from a static context
2 errors

Standard output is empty