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Thread: reading floats from file and output minimum and maximum temperatures

  1. #1
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    Default reading floats from file and output minimum and maximum temperatures

    Hi guys,
    I'm new to this forum and I'm excited to learn more about java with your help
    I'm learning how to read numbers from file.
    in this coding, I want to read floats from file and calculate minimum and maximum temperatures from it and get a output like this :
    -10 ≤ temp < 0
    0 ≤ temp < 10
    10 ≤ temp < 20
    20 ≤ temp < 30
    30 ≤ temp < 40

    here are my coding:

    import java.util.*;
    import java.io.*;
     
    public class max {
     
        public static void main(String[] args) {
            if (0 < args.length) {
         File test = new File(args[0]);
     
    Scanner t = new Scanner( new FileInputStream(test));
    while(t.hasNextFloat()){
           float x = t.nextFloat();
           System.out.println(x);
    }
        }

    and here an example of my file:
    12.8701128	-19.08983034
    37.95429681	51.67538099
    14.815839	8.192769202
    -16.12037567	58.16092338
    43.11540189	-3.681658176
    59.099608	9.176666748
    21.34655982	9.509843699
    2.620998417	56.92736179
    -11.9657946	66.29716149
    5.732177907	-14.88076519
    -11.43389073	55.27621116
    49.09869394	45.01297259

    any idea how can I separate minimum and maximum of each raw and print it like above?
    thank you


  2. #2
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    Default Re: reading floats from file and output minimum and maximum temperatures

    First step, what do you think you will need? Think about how you would work out the min and max values using pen and paper and I read out numbers one at a time.
    Improving the world one idiot at a time!

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