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Write Data into the File



Java Code to Write the Data into the File:

import java.io.File;
import java.io.*;
public class FileHandling
{
public static void main(String[] args)throws IOException
{         
FileWriter fw=new FileWriter("c:\\guleria\\compuhelp.txt",true);
//second argument is append mode
fw.write("Welcome you in java file handling\n");
fw.write("This is second line.\n");
fw.write("This is third line\n");
fw.close();
System.out.println("Data saved to file");
}//end of main
}//end of class




Write the Data into the File using FileOutputStream class:

//DataOutputStream class is used to write data to the FileOutputStream //DataOutputStream class has no. of methods to write data to the file.

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.DataOutputStream;
import java.io.File;


public class DemoFileOutputStream {
    public static void main(String[] args)throws IOException
     {
        File file=new File("compuhelp.txt");
        FileOutputStream fos=new FileOutputStream(file, true);
        DataOutputStream dos=new DataOutputStream(fos);
        dos.writeUTF("hello data saved to file");
        dos.writeInt(100);
        dos.writeDouble(200.50);
        System.out.println("Data saved to file");
        dos.close();
        fos.close();
       

    }//end of main
}//end of class