How do I save a String to a text file using Java?

Question

In Java, I have text from a text field in a String variable called \"text\".

How can I save the contents of the \"text\" variable to a file?

Answer 1

Use FileUtils.writeStringToFile() from Apache Commons IO. No need to reinvent this particular wheel.

Answer 2

Use this, it is very readable:

import java.nio.file.Files;
import java.nio.file.Paths;

Files.write(Paths.get(path), lines.getBytes(), StandardOpenOption.WRITE);

Answer 3

In Java 7 you can do this:

String content = "Hello File!";
String path = "C:/a.txt";
Files.write( Paths.get(path), content.getBytes());

There is more info here: http://www.drdobbs.com/jvm/java-se-7-new-file-io/231600403

Answer 4

Apache Commons IO contains some great methods for doing this, in particular FileUtils contains the following method:

static void writeStringToFile(File file, String data) 

which allows you to write text to a file in one method call:

FileUtils.writeStringToFile(new File("test.txt"), "Hello File");

You might also want to consider specifying the encoding for the file as well.

Answer 5

Take a look at the Java File API

a quick example:

try (PrintStream out = new PrintStream(new FileOutputStream("filename.txt"))) {
    out.print(text);
}

Answer 6

You can use the modify the code below to write your file from whatever class or function is handling the text. One wonders though why the world needs a new text editor...

import java.io.*;

public class Main {

    public static void main(String[] args) {

        try {
            String str = "SomeMoreTextIsHere";
            File newTextFile = new File("C:/thetextfile.txt");

            FileWriter fw = new FileWriter(newTextFile);
            fw.write(str);
            fw.close();

        } catch (IOException iox) {
            //do stuff with exception
            iox.printStackTrace();
        }
    }
}