problem !! input on GUI to a file

Please help me,,, what i want to do is writing on a text area by keyboard,,, and printing everything on a file,, but the problem is that the file is not empty and containing some text,,, so IT JUST DELETES WHATS ON THE FILE , !!

Code:

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submit = new JButton("Submit");
                               
                                submit.addActionListener(new ActionListener(){
                                        public void actionPerformed(ActionEvent e){
                                                PrintWriter pr;
                                                string2 = area2.getText(); //copys everything on text area and puts it on string2
                                               
                                                File file = new File("C://Users//Desktop//aaa.txt");
                                                try {
                                                        pr  = new PrintWriter(file);
                                                        pr.print(string2); //it prints on file but after deleting my previous text  on file~!!
                                                        pr.close();
                                                       
                                                } catch (FileNotFoundException e1) {
                                                       
                                                        e1.printStackTrace();
                                                }
                                               
                                               
                                        }
                                });

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You might want to use a FileWriter rather than a PrintWriter object. If you check the FileWriter API, you'll see that it has a constructor that takes a String for a file name and a boolean, the latter if true lets you append to a file.

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Much luck!