Spero intenda questo

codice:
try {
            BufferedReader br=new BufferedReader(new FileReader(new File("File.txt")));
            String linea="";
            while( (linea=br.readLine()) !=null )
                System.out.println(linea);
            
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }