Swing/AWT/SWT :: Save Text From JTextArea - String Formatting

I am currently working on a project that can save text from a JTextArea and also open that same saved text. The problem I am having is that when I open the saved text file it is no longer formatted.

How the file looks before saving/closing:

public class HelloWorld{
System.out.println("Hello World!");
}

How the file looks after being saved/closed then opened:

public class HelloWorld{ System.out.println("Hello World!");}

When I save the file I'm actually saving the entire thing to a single string. When I do this the String eliminates all tabbed spacing and pushes all characters to one single line.

The only ideas I had for fixing this were to either somehow use Format in the String class or record every time user tabs and add to the String.