Tugas PBO B Database Sederhana

MEMBUAT DATABASE SEDERHANA

Database Kelas Menggunakan beberapa kelas yakni

1. Database

2. Mahasiswa

3. Dosen

4. Kelas

5. MataKuliah

6. Pegawai

7. Buku

Berikut kelas kelasnya

1. Database

import java.util.ArrayList;
public class Database
{
    private ArrayList<Object> peg;
    private ArrayList<Object> dos;
    private ArrayList<Object> mhs;
    private ArrayList<Object> kls;
    private ArrayList<Object> mk;
    private ArrayList<Object> bk;
    
    public Database(){
        peg= new ArrayList<Object>();
        dos= new ArrayList<Object>();
        mhs= new ArrayList<Object>();
        kls= new ArrayList<Object>();
        mk= new ArrayList<Object>();
        bk= new ArrayList<Object>();
    }
    
    public void addpeg (Object objek){
        peg.add(objek);
    }
    public void adddos (Object objek){
        dos.add(objek);
    }
    public void addmhs (Object objek){
        mhs.add(objek);
    }
    public void addkls (Object objek){
        kls.add(objek);
    }
    public void addmk (Object objek){
        mk.add(objek);
    }
    public void addbk (Object objek){
        bk.add(objek);
    } 
    
    public void ambil_kelas(int ind, Mahasiswa mhs){
        if(ind<=kls.size()){
            Kelas temp = (Kelas)kls.get(ind-1);
            temp.setkuota(false);
            System.out.print("Kelas ");
            temp.info();
            System.out.println("berhasil diambil oleh "+mhs.getnama());
        }
        else System.out.println("Kelas tidak ada");
    }
    
    public void pinjam_buku(int ind, Mahasiswa mhs){
        if(ind<=bk.size()){
            Buku temp = (Buku)bk.get(ind-1);
            temp.settok(false);
            System.out.print("Buku ");
            temp.info();
            System.out.println("berhasil dipinjam oleh "+mhs.getnama());
        }
        else System.out.println("Buku tidak ada");
    }
    
    public void kembalikan_buku(int ind, Mahasiswa mhs){
        if(ind<=bk.size()){
            Buku temp = (Buku)bk.get(ind-1);
            temp.settok(true);
            System.out.print("Buku ");
            temp.info();
            System.out.println("berhasil dikembalikan oleh "+mhs.getnama());
        }
        else System.out.println("Buku tidak ada");
    }
    
    public void daftar(int id){
        int no = 1;
        switch(id){
        case 1:
        for(Object cd: peg){
            System.out.println(no++);
            cd.info();
            System.out.println();
        }
        break;
        
        case 2:

        for(Object cd: dos){
            System.out.println(no++);
            cd.info();
            System.out.println();
        }
        break;
        
        case 3:

        for(Object cd: mhs){
            System.out.println(no++);
            cd.info();
            System.out.println();
        }
        break;
        
        case 4:

        for(Object cd: mk){
            System.out.println(no++);
            cd.info();
            System.out.println();
        }
        break;
        
        case 5:

        for(Object cd: kls){
            System.out.println(no++);
            cd.info();
            System.out.println();
        }
        break;
        
        case 6:

        for(Object cd: bk){
            System.out.println(no++);
            cd.info();
            System.out.println();
        }
        break;
    }
    }
}

2. Mahasiswa

public class Mahasiswa extends Orang
{
    private String status;
    private double ipk;
    
    public Mahasiswa(String name, int no, String tgl, String from, String stat, double nilai){
        super(name,no,tgl,from);
        this.status = stat;
        this.ipk = nilai;
    }
    
    public String status(){
        return status;
    }
    
    public double ipk(){
        return ipk;
    }
    
    public void set_ipk(double nilai){
        this.ipk=nilai;
    }
    
    public void info(){
        super.info();
        System.out.println(this.status()+" IPK: "+this.ipk());
    }
    
}

3. Dosen

public class Dosen extends Orang
{
    private String jabatan;
    private MataKuliah matkul;
    
    public Dosen(String name, int no, String tgl, String from, String jabat, MataKuliah mk){
        super(name,no,tgl,from);
        this.jabatan = jabat;
        this.matkul = mk;
    }
    
    public String jabatan(){
        return jabatan;
    }
    
    public String matkul(){
        return matkul.getnama();
    }
    
    public MataKuliah getmatkul(){
        return matkul;
    }
    
    public void info(){
        super.info();
        System.out.println("Jabatan: "+this.jabatan()+" Matkul:"+this.matkul());
    }
}

4. Matakuliah

public class MataKuliah extends Object
{
    private String deskripsi;
    private int sks;
    
    public MataKuliah(String name, int no, String des,int Sks){
        super(no,name);
        this.deskripsi = des;
        this.sks = Sks;
    }
    
    public String getdeskripsi(){
        return deskripsi;
    }
    
    public int getsks(){
        return sks;
    }
    
    public void info(){
        super.info();
        System.out.println(this.getsks()+" sks, "+this.getdeskripsi());
    }
}

5. Buku

public class Buku extends Object
{
    private String penulis;
    private int stok;
    
    public Buku(String name, int no, String author,int banyak){
        super(no,name);
        this.penulis = author;
        this.stok = banyak;
    }
    
    public String getpenulis(){
        return penulis;
    }
    
    public int getstok(){
        return stok;
    }
    
    public void settok(boolean tambah){
        if(tambah) stok+=1;
        else stok-=1;
    }
    
    public void info(){
        super.info();
        System.out.println("Penulis: "+this.getpenulis()+" Stok:"+this.getstok());
    }
}

6. Kelas

public class Kelas extends Object
{
    private Dosen dosen;
    private int kuota;
    
    public Kelas(String name, int no, Dosen dos, int qt){
        super(no,name);
        this.dosen = dos;
        this.kuota = qt;
    }
    
    public String dosen(){
        return dosen.getnama();
    }
    
    public Dosen getdosen(){
        return dosen;
    }
    
    public int getkuota(){
        return kuota;
    }
    
    public void setkuota(boolean tambah){
        if(tambah) kuota+=1;
        else kuota-=1;
    }
    
    public void info(){
        System.out.println("Dosen: "+this.dosen());
        System.out.println("Kelas: "+this.getnama()+" kuota:"+this.getkuota());
    }
}

7. Pegawai

public class Pegawai extends Orang
{
    private String bagian;
    
    public Pegawai(String name, int no, String tgl, String from, String bag){
        super(name,no,tgl,from);
        this.bagian = bag;
    }
    
    public String bagian(){
        return bagian;
    }
    
    public void info(){
        super.info();
        System.out.println("Bagian: "+this.bagian());
    }
}