JAVA 怎么在命令行中输入数据，然后排序后输出，要代码

import java.io.*;
import java.lang.Integer;
class MaxIntger
{
public static int x=0,y=0,temp;
static int i=0;
public void getInput()
{

String str;
try
{
//int ch = System.in.read();
//temp=(Integer)ch;
//System.in(temp,0,255);
DataInputStream in=new DataInputStream(System.in);
str=in.readLine();
temp=Integer.parseInt(str);
//System.out.println(temp);

}catch(Exception e){}
}
public void showMessage()
{
System.out.println("最大值为："+x+"最小值为："+y);
}
public static void main(String [] args)
{
MaxIntger input = new MaxIntger();
do
{
input.getInput();
i++;
if (x<=temp)
x=temp;
else if(y>=temp)
y=temp;