Java – Simplest Way to Write a Text File

filejavatext

I am wondering what is the easiest (and simplest) way to write a text file in Java. Please be simple, because I am a beginner 😀

I searched the web and found this code, but I understand 50% of it.

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

public class WriteToFileExample {
public static void main(String[] args) {
    try {

        String content = "This is the content to write into file";

        File file = new  File("C:/Users/Geroge/SkyDrive/Documents/inputFile.txt");

        // if file doesnt exists, then create it
        if (!file.exists()) {
            file.createNewFile();
        }

        FileWriter fw = new FileWriter(file.getAbsoluteFile());
        BufferedWriter bw = new BufferedWriter(fw);
        bw.write(content);
        bw.close();

        System.out.println("Done");

    } catch (IOException e) {
        e.printStackTrace();
    }
}

}

Best Answer

With Java 7 and up, a one liner using Files:

String text = "Text to save to file";
Files.write(Paths.get("./fileName.txt"), text.getBytes());

Related Solutions

Java File Writing – How to Write Content to a Text File Using Java

Very quick code. I apologize if there are compile errors.

 import java.io.FileWriter;
  import java.io.IOException;  
  public class TestClass {
      public static String newLine = System.getProperty("line.separator");
      public static void main(String[] a) {
        FileWriter writer;
        try {
          writer = new FileWriter("test.txt");
          for(int i=0;i<3;i++){
            writer.write(row+i+newLine);
          }
          writer.close();
        } catch (IOException e) {
          e.printStackTrace();
        }

      }
    }

Java – How to Write to a Text File

I think your expectations and reality don't match (but when do they ever ;))

Basically, where you think the file is written and where the file is actually written are not equal (hmmm, perhaps I should write an if statement ;))

public class TestWriteFile {

    public static void main(String[] args) {
        BufferedWriter writer = null;
        try {
            //create a temporary file
            String timeLog = new SimpleDateFormat("yyyyMMdd_HHmmss").format(Calendar.getInstance().getTime());
            File logFile = new File(timeLog);

            // This will output the full path where the file will be written to...
            System.out.println(logFile.getCanonicalPath());

            writer = new BufferedWriter(new FileWriter(logFile));
            writer.write("Hello world!");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                // Close the writer regardless of what happens...
                writer.close();
            } catch (Exception e) {
            }
        }
    }
}

Also note that your example will overwrite any existing files. If you want to append the text to the file you should do the following instead:

writer = new BufferedWriter(new FileWriter(logFile, true));

Best Answer

Related Solutions

Java File Writing – How to Write Content to a Text File Using Java

Java – How to Write to a Text File

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