Print Minimum Temperature So Primitive

import java.io.*;

public class Minumum {
  public static void main(String args[]) {
    int i = 0;
    int dans = 1;
    float tans = 0;
    float num;
    String str;
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    try {
      while ((str = br.readLine()) != null) {
        num = Float.parseFloat(str);
        i++;
        if (tans > dans) {
          tans = num;
          dans = i;
        }
      }
    }
    catch (Exception e) {
    }
    System.out.println(dans + "日: " + tans);
  }
}