String program try File new File test char CB new char int length Read

     String program;
        try {
            File f = new File("test");
            char[] CB = new char[(int) f.length()];
            Reader reader = new InputStreamReader(new FileInputStream(f), "UTF-8");
            reader.read(CB);
            program = new String(CB);
            reader.close();
        } catch (Exception ex) {
            System.out.println(ex);
            return;
        }