Question

How to write and read char from file using DataOutputStream() and DataInputStream() in Java

Answer 1

package javaapplication1;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class JavaApplication1 {

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

        String sFilePath = "d://data.txt";

        try {

            DataOutputStream dos;
            try (FileOutputStream fos = new FileOutputStream(sFilePath)) {
                dos = new DataOutputStream(fos);
                dos.writeChar(65);
                dos.flush();
            }
            
            try (FileInputStream fis = new FileInputStream(sFilePath);
                 DataInputStream dis = new DataInputStream(fis)) {
                
                char ch = dis.readChar();
                System.out.println("Char: " + ch);
            }

        } catch (IOException ioe) {
            System.out.println(ioe.getMessage());
        }
    }
}

/*
      
run:

Char: A
  
*/

 

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