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Java program to write content into file using BufferedWriter

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mahmoud2506
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2022-05-07
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This program will write the content (string data) into the file using BufferedWriter class. We will create a file named "file2.txt" in the same directory.

BufferWriter takes the FileWriter type argument and FileWriter class defines that file. So we have to create mainly three object:

  • A File object to define the filename.
  • A FileWriter object to define the File using File Object.
  • A BufferedWriter objcet with respect of FileWriter object.

 

BufferedWriter.write() - This method is used to write String data into the file.

BufferedWriter.close() - This method is used to save and close the file.

Program will read content from the file line by line until null is not found.

 

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mahmoud2506
2022-05-07
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Write Content into File using BufferedWriter in Java

// Java program to write content into file 
// using BufferedWriter

import java.io.File;
import java.io.FileWriter;
import java.io.BufferedWriter;
import java.util.Scanner;

public class ExBufferedWriter {
  public static void main(String args[]) {
    final String fileName = "file2.txt";

    try {
      File objFile = new File(fileName);
      if (objFile.exists() == false) {
        if (objFile.createNewFile()) {
          System.out.println("File created successfully.");
        } else {
          System.out.println("File creation failed!!!");
          System.exit(0);
        }
      }

      //writting data into file
      String text;
      Scanner SC = new Scanner(System.in);

      System.out.println("Enter text to write into file: ");
      text = SC.nextLine();

      //instance of FileWriter 
      FileWriter objFileWriter = new FileWriter(objFile.getAbsoluteFile());
      //instnace (object) of BufferedReader with respect of FileWriter
      BufferedWriter objBW = new BufferedWriter(objFileWriter);
      //write into file
      objBW.write(text);
      objBW.close();

      System.out.println("File saved.");
    } catch (Exception Ex) {
      System.out.println("Exception : " + Ex.toString());
    }
  }
}

Output:

    
File created successfully.
Enter text to write into file: 
Computer is an Electronic Device.
File saved.

 

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