Read file character by character in Java

//from   www.  j  a v a  2s . c  om
import java.io.File;
import java.io.FileInputStream;

public class Main {
  public static void main(String[] args) throws Exception {
    File file = new File("main.java");
    if (!(file.isFile() && file.canRead())) {
      System.out.println(file.getName() + " cannot be read from.");
      return;
    }
    FileInputStream fis = new FileInputStream(file);
    char current;
    while (fis.available() > 0) {
      current = (char) fis.read();
      System.out.print(current);
    }
    fis.close();

  }
}