Coding Notepad ++

import java.util.Scanner;

public class materifisika1 {

    public static void main(String[] args) {

                    Scanner input = new Scanner(System.in);

                        int Ep;

                        int Vt;

                        int mz;

        String loop,pilihMenu = "";

                        int satuan = 0;

        System.out.println("------------------------------------------");

        System.out.println("|              Materi Fisika             |");

        System.out.println("------------------------------------------");

        System.out.println("|  1. Energi Potensial                   |");

        System.out.println("|  2. Gerak Vertikal Ke Bawah            |");

                        System.out.println("|  3. Mol dan Massa Molekul              |");

        System.out.println("|  4. Exit                               |");

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

        for (loop = "Y"; loop.equals ("Y") || loop.equals ("y");)

                        {

        System.out.print("Pilih Menu (1 s/d 3)    : ");

        int pilihan = input.nextInt();

                       

        switch(pilihan){

    case 1:

                                    System.out.println("---------------------- Energi Potensial -------------------------");

                                    System.out.println("Energi potensial adalah energi yang dimiliki suatu benda ");

                                    System.out.println("karena memiliki ketinggian tertentu dari tanah");

                                    System.out.println("--------------------------------------------------");

                                    System.out.println("Rumus Energi Potensial: Ep = m * gr * h ");

                                    System.out.println("Ep : Energi potensial (J)");

                                    System.out.println("m  : massa benda (kg)");

                                    System.out.println("gr : percepatan gravitasi (m/s2)");

                                    System.out.println("h  : tinggi benda dari permukaan tanah (meter)");

                                    System.out.println("--------------------------------------------------");

                                    System.out.print("Masukkan Massa Benda :");

                                    Integer m = input.nextInt();

                                    System.out.print("Masukkan Percepatan Gravitasi Benda :");

                                    Integer gr = input.nextInt();

                                    System.out.print("Masukkan Tinggi Benda Dari Permukaan Tanah :");

                                    Integer h = input.nextInt();

                                    Ep = m * gr * h;

                                    System.out.println("Hasil MassaJenisBenda adalah : "+ Ep + "(J)\n");

                                    break;

            case 2:

                                    System.out.println("---------------------- Gerak Vertikal Ke Bawah -------------------------");

                                    System.out.println("Benda dilemparkan tegak lurus bidang horizontal arahnya ke bawah");

                                    System.out.println("Arah percepatan gravitasi dan arah gerak benda searah");

                                    System.out.println("merupakan gerak lurus berubah beraturan dipercepat.");

                                    System.out.println("--------------------------------------------------");

                                    System.out.println("Rumus Gerak Vertikal ke Bawah : Vt = Vo + g * t");

                                    System.out.println("Vt= kecepatan pada ketinggian tertentu dari tanah");

                                    System.out.println("Vo = kecepatan awal");

                                    System.out.println("g = gravitasi bumi");

                                    System.out.println("t= waktu");

                                    System.out.println("--------------------------------------------------");

                                    System.out.print("Masukkan Kecepatan Awal :");

                                    Integer Vo = input.nextInt();

                                    System.out.print("Masukkan gaya Gravitasi Bumi :");

                                    Integer g = input.nextInt();

                                    System.out.print("Masukkan Waktu Yang Ditempuh:");

                                    Integer t = input.nextInt();

                                    Vt = Vo+g*t;

                                    System.out.println("Hasil Gerak Vertikal Ke Bawah adalah : "+ Vt + "(m/s)\n");

                                    break;

            case 3:

                                    System.out.println("---------------------- Mol dan Massa Molekul -------------------------");

                                    System.out.println("Molekul didefinisikan sebagai sekelompok atom  dalam susunan tertentu dan ");

                                    System.out.println("(paling sedikit dua) yang saling berikatan dengan sangat kuat (kovalen)");

                                    System.out.println("bermuatan netral serta cukup stabil");

                                    System.out.println("--------------------------------------------------");

                                    System.out.println("Rumus Mol dan Massa Molekul : m = n * Mo");

                                    System.out.println("n : jumlah mol");

                                    System.out.println("Mo : Massa relatif Atom/Molekul");

                                    System.out.println("mz : massa zat (kg)");

                                    System.out.println("--------------------------------------------------");

                                    System.out.print("Masukkan Jumlah Mol :");

                                    Integer n = input.nextInt();

                                    System.out.print("Masukkan Massa Relatif Atom/Molekul :");

                                    Integer Mo = input.nextInt();

                                    mz = n * Mo;

                                    System.out.println("Hasil Gerak Vertikal Ke Bawah adalah : "+ mz + "(m/s)\n");

                                    break;

                                   

    case 4:

            System.out.println("Selesai");

                                    System.exit(0);

            break;

    default:

            System.out.println("Sorry, input menu yang anda masukkan tidak sesuai");

            }

        System.out.print("Ada lagi materi fisika yang ingin dipilih ? (Y/N) : ");

        loop = input.next();

        }

    }

}

Berikut Output Program