Coding OOP inheritance

package oop2;
import javax.swing.*;

class manusia {
private String manusia;

public void set_manusia(String nama) {
manusia = nama;
}
public String get_Manusia() {
return manusia;
}
}

class mahasiswa extends manusia {
private String npm;
private String maha;
public void set_npm(String no_id) {
npm = no_id;
}

public String get_npm(){
return npm;

}
public void set_maha(String ipk) {
maha = ipk;
}
public String get_maha(){
return maha;
}
}

class pekerja extends mahasiswa{
private String pekerja;
private String gaj;
public void set_pekerja(String nama) {
pekerja = nama;
}
public String get_pekerja(){
return pekerja;
}
public void set_gaj(String gaji) {
gaj = gaji;
}
public String get_gaj(){
return gaj;

}

}

CLASS LAIN


import javax.swing.*;

public class mahasiwa {
public static void main(String[] args) {
pekerja x = new pekerja();


x.set_manusia(JOptionPane.showInputDialog("Masukkan Nama"));
x.set_maha(JOptionPane.showInputDialog("Masukkan IPK"));
x.set_npm(JOptionPane.showInputDialog("Masukkan NPM"));
x.set_pekerja(JOptionPane.showInputDialog("Masukkan ID Pekerja"));
x.set_gaj(JOptionPane.showInputDialog("Masukkan Jumlah Gaji"));

   System.out.println("Nama : "+x.get_Manusia());

   System.out.println("IPK : "+x.get_maha());

   System.out.println("NPM : "+x.get_npm());

   System.out.println("ID pekerja : "+x.get_pekerja());

   System.out.println("Jumlah Gaji : "+x.get_gaj());

}
}

Run:

Nama : Luk Lu'ul Marjan

IPK : 3.5

NPM : 1135010025

ID pekerja : 12345678

Jumlah Gaji : 3.000.000

BUILD SUCCESSFUL (total time: 50 seconds)






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