How do I add text to the end of a file in Java?

There is a text file that already stores some information.

How can I add data to a file if the write method of the FileWritter class overwrites the old data and writes new ones?

Author: LEQADA, 2015-11-04
Source

2 answers

Method 1:

One option is to use the write method of the Files :

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;

public class Main {

    public static void main(String[] args) {
        String filePath = "/home/user/Desktop/project/src/myfile.txt";
        String text = "Hello world!\n";

        try {
            Files.write(Paths.get(filePath), text.getBytes(), StandardOpenOption.APPEND);
        }
        catch (IOException e) {
            System.out.println(e);
        }
    }
}

Method 2:

Using the FileWriter created by the corresponding constructor

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

public class Main {

    public static void main(String[] args)  {
        String filePath = "/home/user/Desktop/project/src/myfile.txt";
        String text = "Hello world!\n";

        try {
            FileWriter writer = new FileWriter(filePath, true);
            BufferedWriter bufferWriter = new BufferedWriter(writer);
            bufferWriter.write(text);
            bufferWriter.close();
        }
        catch (IOException e) {
            System.out.println(e);
        }
    }
}
 4
Author: LEQADA, 2015-11-04 21:38:44 
public FileWriter(String fileName, boolean append) throws IOException

Constructs a FileWriter object given a file name with a boolean indicating whether or not to append the data written.
Parameters:
fileName - String The system-dependent filename.
append - boolean if true, then data will be written to the end of the file rather than the beginning.
Not that?

 2
Author: Sergey, 2015-11-04 17:39:18