How to append data to a text file in java?

[KALANI84]

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Hello to all,
I am new to this forum. I am last year Computer science student. As part of my syllabus I am working on project where I use java as front end. In that project I have to append data to a text file. I tried various method, but none of them worked out. Can anyone tell me how to append data to a text file in java?
Thanks in advanced.

[Praetor]

Hey it is very easy process to append data to a text file in java. You have to just use java.io and FileWriter class to do this. FileWriter class provides constructor that is used to accept a boolean parameter call append. In the following program you have to set boolean value true to append data to a text file.

package sample.code.java.io;

import java.io.*;

public class AppendFileEg
{
    public static void main(String[] args) 
    {
        File files = new File("sample.txt");

        try 
        {            
            FileWriter writers = new FileWriter(files, true);
            writer.write("usernames=omen;password=12345" 
                    + System.getProperty("line.separator"));
            writers.flush();
            writers.close();
        } catch (IOException es) 
        {
            es.printStackTrace();
        }
    }
}

[kelfro]

You have to use BufferedWriter class and FileWriter class to append data to a text file. To do this you have to first invoke FileWriter constructor in proper way. I have written small java program to append data to a text file. In following program I have create one class known as appendfileEg class.

import java.io.*;

public class appendfileEg {

   public static void main (String[] args) {

      JavaFileAppendFileWriterExample as = new JavaFileAppendFileWriterExample();
      as.appendToCheckbook();

   } 

   public void appendToCheckbooks () {

      BufferedWriter bws = null;

      try {
         bws = new BufferedWriter(new FileWriter("sample1.dat", true));
	 bws.write("406:036987998:Inprise Corporation:236.95");
	 bws.newLine();
	 bws.flush();
      } catch (IOException ioes) {
	 ioes.printStackTrace();
      } finally {                       
	 if (bws != null) try {
	    bws.close();
	 } catch (IOException ioe2s) {
	    
	 }
      }

   } 

}

[Zecho]

It is very simple to append data to a text file in java. It is very small program to understand. In the following program I have use two class known as FileWriter and BufferedWriter to append the data to a file. The FileWriter class is usually used for writing character files and the BufferWriter class is commonly used to write text to a character-output stream like string.

import java.io.*;
class FileWrite 
{
   public static void main(String args[])
  {
      try{
    
    FileWriter fstreams = new FileWriter("sampl1.txt",true);
        BufferedWriter outs = new BufferedWriter(fstream);
    out.write("Hello to this world");
   
    outs.close();
    }catch (Exception es){
      System.err.println("Errors: " + es.getMessage());
    }
  }
}

[absolute55]

As per my knowledge it is very simple to append data to text file in java. You only have to used only two class FileWriter and BufferedWriter to append data to a text file. It is very simple program. Just use this code in your program to do this. In following program I have crated one object of BufferedWriter and save all data information in that object

try {
BufferedWriter outs = new BufferedWriter(new FileWriter("samplefilenames", true));
outs.write("aString");
outs.close();
} catch (IOException e) {}