import java.io.*;
public class MyMath
{
//static int a,b,c;
public static void Max(int a,int b,int c)
{
if(a>b)
{
if(a>c) System.out.println("the bigest number is "+a);
else System.out.println("the bigest number is "+c);
}
else
{
if(b>c) System.out.println("the bigest number is "+b);
else System.out.println("the bigest number is "+c);

}
}
public static void main(String[] args)throws IOException
{
MyMath m=new MyMath();
int n1;
int n2;
int n3;
System.out.println("please enter the first number:");
n1=(int)System.in.read();
System.out.println("please enter the second number:");
n2=(int)System.in.read();
System.out.println("please enter the third number:");
n3=(int)System.in.read();
m.Max(n1,n2,n3);
}
}

就是这个,就是要求输入三个数,然后输出最大数

运行时只输入一个数就结束程序了,不知道问题出在哪