运行效果如下

public class Max {
public static void main(String[] args) {
int[] numbers = new int[5];
Scanner sc = new Scanner(System.in);
for (int i = 0; i < numbers.length; i++) {
System.out.println("请输入第"+ (i+1) +"个数字");
int s = sc.nextInt();
numbers[i] = s;
}
int max = numbers[0];
int min = numbers[0];
int count = 0;
for (int i = 0; i < numbers.length; i++) {
count+=numbers[i];
if (max < numbers[i]) {
max = numbers[i];
}
if (min > numbers[i]) {
min = numbers[i];
}
}
double avg= count/5.0;
for (int number : numbers) {
System.out.print(number +" ");
}
System.out.println("中最大值为:" +max +",最小值是:" +min +",总分是:" + count+",平均分是:" +avg);
}
}