题解 | #实现接口#

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Comparator comparator = new ComparatorImpl();

        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNextInt()) {
            int x = scanner.nextInt();
            int y = scanner.nextInt();
            System.out.println(comparator.max(x, y));
        }
    }


}

interface Comparator {
    /**
     * 返回两个整数中的最大值
     */
    int max(int x, int y);
}
  class ComparatorImpl implements Comparator {
    public  int max(int x,int y) {
        return Math.max(x,y);
    }
}