Read file character by character

   

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

public class Main {
  public static void main(String[] args) {
    File file = new File(args[0]);
    if (!file.exists()) {
      System.out.println(args[0] + " does not exist.");
      return;
    }
    if (!(file.isFile() && file.canRead())) {
      System.out.println(file.getName() + " cannot be read from.");
      return;
    }
    try {
      FileInputStream fis = new FileInputStream(file);
      char current;
      while (fis.available() > 0) {
        current = (char) fis.read();
        System.out.print(current);
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}

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Read file character by character : FileInputStream « File Input Output « Java

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