从键盘输入三个整数，分别存入x,y,z三个整型变量中，计算并输出三个数的和以及平均值。java

import java.util.Scanner;

public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int x = scanner.nextInt();
int y = scanner.nextInt();
int z = scanner.nextInt();
int sum = x + y + z;
double avg = sum / 3.0;
System.out.println("三个数的和为：" + sum);
System.out.println("三个数的平均值为：" + avg);
}
}