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{

@Override
public int max(int x, int y) {
    
    return x>y?x:y;
}

}