How do I append data to a text file?
Category: java.io, viewed: 2832 time(s).
One of the common task related to a text file is to append or add some contents to the file. It really simple to do this in Java using a FileWriter class. This class has a constructor that accept a boolean parameter call append. By setting this value to true a new data will be appended at the end of the file when we write a new data to it. Let's see an example.
package org.kodejava.example.io;
import java.io.*;
public class AppendFileExample
{
public static void main(String[] args)
{
File file = new File("user.txt");
try
{
FileWriter writer = new FileWriter(file, true);
writer.write("username=kodejava;password=secret"
+ System.getProperty("line.separator"));
writer.flush();
writer.close();
} catch (IOException e)
{
e.printStackTrace();
}
}
}
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