37 symbols and probability

import java.io.File;
import java.io.FileNotFoundException;
import java.util.*;
public class Compress {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        String text="";
        try {
            text = new Scanner( new File("testdata.txt"), "UTF-8" ).useDelimiter("\\A").next();
            System.out.println(text+"");
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        char ch[] = new char[37];
        for(int i=0;i<10;i++)
            ch[i]=(char)(i+48);
        for(int i=0;i<26;i++)
            ch[i+10]=(char)(i+65);
        ch[36]=(char)32;
        System.out.println("CHARACTERS IN THE TEXT FILE ARE : \n"+Arrays.toString(ch));
        int count[] = new int[37];
        for(int j=0;j<37;j++) {
        for(int i=0;i<text.length();i++) {
            if(ch[j]==text.charAt(i))
                count[j]=count[j]+1;
        }
        }
        double d=text.length();
        System.out.println("THE COUNT OF EACH CHARACTER IS : \n"+Arrays.toString(count));
        System.out.println("TOTAL NO. OF CHARACTERS : "+text.length());
        for(int i=0;i<count.length;i++) {
            System.out.println("THE PROBABLITY OF "+ch[i]+" IS "+(count[i]/d));
        }
        double entropy=0.0;
        for(int i=0;i<37;i++) {
            if(count[i]==0)
                continue;
            double probability=count[i]/d;
            double entropy1=probability*(Math.log(probability)/Math.log(2));
            entropy+=entropy1;

        }
        System.out.println("THE ENTROPY IS "+(-1)*entropy);

    }

}