Store String inside a File using Java

Question

I have some value inside a String variable by the name 'text'. How can I save the value from this variable to a text file using JAVA ?

Answer 1

If you're simply outputting text, rather than any binary data, the following will work:

PrintWriter out = new PrintWriter("filename.txt");

Then, write your String to it, just like you would to any output stream:

out.println(text);

You'll need exception handling, as ever. Be sure to call out.close() when you've finished writing.

If you are using Java 7 or later, you can use the "try-with-resources statement" which will automatically close your PrintStream when you are done with it (ie exit the block) like so:

try (PrintWriter out = new PrintWriter("filename.txt")) {
    out.println(text);
}

You will still need to explicitly throw the java.io.FileNotFoundException as before.

Answer 2

We can use Apache Commons IO. It has some great methods to do this.

static void writeStringToFile(File file, String data) 

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