Mine

blic void changeWord() throws IOException
    {   String inn = word1.getText();
        String ut =   word2.getText();
        JFileChooser fc = new JFileChooser("D:\\Skole\\Eclipse\\Eclipse examples\\new_java\\");
        File   f = null;
        int result = fc.showOpenDialog(fc);
      if( result == JFileChooser.APPROVE_OPTION)
        {
                  f = fc.getSelectedFile();
                 String path = f.getAbsolutePath();
                 oppg2 = new oppgave_2(path);
                 FileReader fr = new FileReader(f);
                 BufferedReader br = new BufferedReader(fr);
        
                 String line = br.readLine();
                 String kilde ="";
        while( line!=null)
        {
        	     kilde+=line;
        	     line =br.readLine();
        }
        
                 br.close();
                 
                 oppg2.byttUt(kilde,ut,inn);