import java.io.DataInputStream;
import java.io.IOException;

public class Test {

    public static void main(String[] args) {
        System.out.println("请输入数字：");
        DataInputStream dis = new DataInputStream(System.in);
        int x = 0;
        try {
            x = dis.readInt();
            System.out.println(x);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
    }
}