Coding Pemograman Kalkulator Matematika dan Fisika Menggunakan bhs pemograman JAVA (bagian 7)

case 2:

                                                               farkecelcius();

                                                   break;

                                                   case 3:

                                                               celkekelvin();

                                                   break;

                                                   case 4:

                                                               kelkecelcius();

                                                   break;

                                                   default:

                                                   System.out.println("Maaf, pilihan anda salah");

                                       }

                           break;

                           case 2:

                                       System.out.println("Matematika\n");

                                       System.out.println("1. Luas Segitiga");

                                       System.out.println("2. Luas Persegi Panjang");

                                       System.out.println("3. Luas Jajaran Genjang");

                                       System.out.println("4. Volume Balok");

                                       System.out.println("5. Volume Tabung");

                                       System.out.println("Masukkan pilihan anda 1-5");

                                       input=in.readLine();

                                       matematika = Integer.parseInt(input);

                                       switch(matematika)

                                       {

                                                   case 1:

                                                               lsegitiga();

                                                   break;

                                                   case 2:

                                                               lpersegipanjang();

                                                   break;

                                                   case 3:

                                                               ljjgenjang();

                                                   break;

                                                   case 4:

                                                               volb();

                                                   break;

                                                   case 5:

                                                               volt();