Baru Belajar OOP Java (Bingung soal class)

Saya baru pertama kali belajar

Spoiler for Drone.java:

Code:

package dasar;

public class Drone {



int energi;

int ketinggian;

int kecepatan;

String merek;



void terbang(){

energi--;

if(energi > 10){

ketinggian++;

System.out.println("Dorne terbang..."); } 

else {System.out.println("Energi lemah: Drone nggak bisa terbang"); } }



void matikanMesin(){

if(ketinggian > 0){

System.out.println("Mesin tidak bisa dimatikan karena sedang terbang"); } 

else { System.out.println("Mesin dimatikan...");  }  }



void turun(){

ketinggian--;

energi--;

System.out.println("Drone turun"); }



void belok(){

energi--;

System.out.println("Drone belok"); }



void maju(){

energi--;

System.out.println("Drone maju ke depan");

kecepatan++; }



void mundur(){

energi--;

System.out.println("Drone mundur");

kecepatan++; } }

saya bingung kok g ga bisa di run, katanya g ada main method
jadi saya buat class baru untuk main method

Spoiler for Coba:

Code:

package dasar;

public class Coba {

public static void main(String[] args) {

Drone robot = new Drone();

robot.merek = "402";

robot.kecepatan = 0;

robot.energi = 40;

robot.ketinggian = 0;



robot.terbang();

robot.matikanMesin();

robot.turun();

robot.maju();

robot.mundur();

robot.belok(); } }

run bisa sih bisa tapi,
utk terbang, matikanMesin kayaknya cocok

kalau turun, maju, mundur, belok, gimana ya ?
sempat edit di class

terus saya coba buat edit di Drone.java

Spoiler for re-edit Drone.java:

Code:

void turun(){

if(energi > 20){

ketinggian--;

energi--;

System.out.println("Drone turun"); } }



void belok(){

energi--;

if (energi>30){

System.out.println("Drone belok kekiri");}

else {System.out.println("Drone belok kekanan"); } }



void maju(){

energi--;

if(kecepatan>60){

System.out.println("Drone maju ke depan");

kecepatan++;}  }



void mundur(){

energi--;

if(energi > 50){

System.out.println("Drone mundur");

kecepatan++; } } }

kayaknya bukan itu, saya rasa yg di ubah di main method, logika saya g nyampe, bisa bantu saya belajar?
=============================================================================
terus gan ini(koding yang kedua) pake inheritance

Spoiler for induk class:

Code:

package Tes;

public class Enemy {

String name;

int hp;

int attackPoin;



void attack() {

System.out.println("Serang!"); } }

Spoiler for anak class:

Code:

package Tes;

public class I extends Enemy {



void walk() {

System.out.println("walk"); }



void jump() {

System.out.println("jump"); }

   

void fly() {

System.out.println("fly"); } }

Spoiler for anak class2:

Code:

package Tes;

public class K extends Enemy {



void walk() {

System.out.println("apalah"); } }

Spoiler for anak class3:

Code:

package Tes;

public class U extends Enemy {



void jump(){

System.out.println("jump"); } }

=============================================================================
terus saya coba buat main methodnya (itu bukan ya namanya ya? kalau salah koreksi)

Spoiler for main method:

Code:

package Tes;

public class Tes1 {

public static void main(String args[]){

Enemy enemy = new Enemy();

I i= new I(); //huruf i besar

K k = new K();

U u = new U();

        

enemy.name = "hewan";

enemy.hp = 100;

enemy.attackPoin = 40;

        

enemy.attack();

i.walk();

i.jump();

i.fly();

u.jump();

k.walk();

i.attack();

u.attack();

k.attack(); } }

bisa di run tapi tetap aja ga cocok, belum terhubung
bantu belajar dong