how to remove '?' sign in the end of file read in java

Question

i m learning file input output and i m having a problem in it.a.txt have some text and when it read and print the world there is'?'mark at the end.. how to remove it.

import java.io.*;
    class fRead{

            public static void main(String args[])throws IOException
            {

                FileInputStream fin=new FileInputStream("a.txt");
                int i=0;
                while(i!=-1){
                    i=fin.read();
                    System.out.print((char)i);
                }

                fin.close();
            }

    }

the result in CMD:- G:\file>javac fRead.java
G:\file>java fRead
VINAYAK COMPUTER ACADEMY?

the***'?'*** in the end is not in the end of file.

Answer 1

This problem happens because you print -1 that you get from the read() after converting it to char, even though the loop should stop without printing anything when -1 is returned.

You can fix it by combining the assignment with the check for negative one:

while ((i = fin.read()) != -1) {
    System.out.print((char)i);
}