FileWriter And FileReader in java

Let’s see how the FileWriter and FileReader works for create a file and write content of it and retrieve the content.

1. First you need to crate a new file using FIle in java.

File file = new File("give a name.txt");

2. Then use that file for create a new FileWriter object. Then you can write the content for the text file that you created             using BufferedWriter.

 File file = new File("E:\\E-Learning(otherS)\\wordpress-blog\\sumi.txt");
 FileWriter fw=new FileWriter(file);
 fw.write("My name is sumith");//this is for flush the content if not write properly.
 fw.write("I'm 23 years old");//close FileWriter
 fw.flush();
 fw.close();

3. Then using FileReader you can get the content of the file and print it.

 FileReader fr = new FileReader(file);
 char array[] = new char[50];
 fr.read(array);
 
 for(char c : array){
      System.out.println(c);
 }

•  This is the full code in java.

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


public class FileWriterClass {
    public static void main(String args[]) throws IOException{
        File file = new File("E:\\E-Learning(otherS)\\wordpress-blog\\sumi.txt");
        FileWriter fw=new FileWriter(file);
        fw.write("My name is sumith");
        fw.write("I'm 23 years old");
        fw.flush();
        fw.close();
 
        FileReader fr = new FileReader(file);
        char array[] = new char[50];
        fr.read(array);
 
        for(char c : array){
            System.out.println(c);
        }
    }
}