package com.company; class FL { //成员变量 int x; int y; int z; //成员方法 void showme () { int result; result = x + y + z; System.out.println(+x + " " + y + " " + z); System.out.println(+result); } } class ZL extends FL { int m; void showme () { int sum; sum = x + y + z + m; System.out.println(+x + " " + y + " " + z+" "+m); System.out.println(+sum); } } public class Main { public static void main(String[] args) { // write your code here FL FL1 = new FL(); ZL ZL1 = new ZL(); FL1.x = 1; FL1.y = 2; FL1.z = 3; ZL1.x = 4; ZL1.y = 5; ZL1.z = 6; ZL1.m = 7; FL1.showme(); ZL1.showme(); } }