Append Content to File in Java

 Posted On  | Yashwant Chavan 

In this tutorial we will learn how append content to file in Java. It will constructs a FileWriter object on given a File object. If the second argument is true then bytes will be written to the end of the file rather than the beginning.

new FileWriter(file, true) - It will constructs a FileWriter object on given a File object. If the second argument is true then bytes will be written to the end of the file rather than the beginning.

new BufferedWriter(fileWritter) - Creates a buffered character-output stream that uses a default-sized output buffer.

hello.txt content

Append demo 

File Append Example

package com.technicalkeeda.app;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

public class FileAppendExample {
    public static void main(String[] args) {
        try {
            String data = "Append me...Thanks";

            File file = new File("C:\\hello.txt");
            FileWriter fileWritter = new FileWriter(file, true);
            BufferedWriter bufferWritter = new BufferedWriter(fileWritter);
            bufferWritter.write(data);
            bufferWritter.close();
   
        } catch (IOException e) {
            System.out.println("IOException Occurred.." + e.getMessage());
        }
    }
}

Finish!!!

Execute above code and open the "hello.txt" file. On each execution of this java program, It will append the content to the file.

Append demo Append me...Thanks


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