求JAVA的两整数输出最大最小值以及两个数的和差积商的程序

import java.io.*;

class SEV {
public static void main(String[] args) throws IOException{
int max,min;
double sh;
InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
System.out.print("please input m:");
String r = input.readLine();
int m = Integer.parseInt(r);
System.out.print("please input n:");
String s = input.readLine();
int n = Integer.parseInt(s);
if(m>n) {max=m;min=n;}
else {min=m;max=n;}
sh=(double)max/min;
System.out.println("max="+max);
System.out.println("min="+min);
System.out.println("max+min="+(max+min));
System.out.println("max-min="+(max-min));
System.out.println("max*min="+(max*min));
System.out.println("max/min="+sh);
}