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); }

//write your code here...... class ComparatorImpl implements Comparator {//注意implements的使用！！！以及Ipml public int max( int x , int y ){ if(x > y) return x; else return y; } }