Getting the first char of each line in a file.

Question:

How can I get the first character of each line in a file?

Answer:

See code.

Code:

import java.io.*;
 
public class ReadFile {
   public static void main(String[] args) {
      try {
         FileInputStream is = new FileInputStream("file.txt");
         BufferedReader br = new BufferedReader(new InputStreamReader(is));
         String str;
         while ((str = br.readLine()) != null)   {
 
            char first = str.charAt(0);
            System.out.println(first);
 
         }
      } catch (Exception e) {
      }
   }
}

Output:

$ java ReadFile 
a
b
c
d

$ cat file.txt 
a bbb ccc ddd
bb ccc dddd eeee
cccc dd ee f
dd eeeeee fff ggg