TUGAS 3 - AUCTION SYSTEM DAN GROUPING OBJECT JAVA COLLECTION

 A. Auction System



1. Class Auction

/**
* Write a description of class Auction here.
*
* @author (Nadia Tiara Febriana)
* @version (25-10-2020)
*/
import java.util.ArrayList;
public class Auction
{
//lots=barang
private ArrayList<Lot> lots; //daftar barang yang dilelang
private int nomorlots; //untuk pengkodean barang
public Auction() //inisiasi pelelangan baru
{
//list barang
lots = new ArrayList<Lot>();
//barang di mulai dari no 1
nomorlots = 1;
}
//memasukkan barang ke daftar barang yang dilelang
public void masukkanBarang(String nama)
{
lots.add(new Lot(nomorlots, nama));
nomorlots++;
}
//menampilkan seluruh barang yang dilelang
public void tampilkanBarang()
{
for(Lot lot : lots)
{
System.out.println(lot.toString());
}
}
public void buatPenawaran(int kode, Person penawar, long harga)
{
Lot selectedLot = getBarang(kode);
if(selectedLot != null) { //hanya bisa jika kode barang telah terdaftar
Bid bid = new Bid(penawar, harga);
boolean successful = selectedLot.bidFor(bid);
if(successful) {
System.out.println("Tawaran untuk nomor barang" + kode + " telah sukses.");
}
else {
//hanya bisa menawar dengan harga yang lebih tinggi daripada penawar sebelumnya
Bid maksTawaran = selectedLot.getTertinggi();
System.out.println("Nomor barang : " + kode +
" sudah memiliki tawaran: " +
maksTawaran.getHarga());
}
}
}
public Lot getBarang(int kode)
{
if((kode >= 1) && (kode < nomorlots)) {
Lot selectedLot = lots.get(kode - 1);
if(selectedLot.getKode() != kode) {
System.out.println("Error internal: nomor lot " +
selectedLot.getKode() +
"telah diganti " +
kode);
// Don't return an invalid lot.
selectedLot = null;
}
return selectedLot;
}
else {
System.out.println("Nomor barang: " + kode +
" tidak tersedia.");
return null;
}
}
public void hentikan()
{
System.out.println("Pelelangan telah dihentikan.");
for(Lot lot : lots)
{
System.out.println(lot.getKode() + ": " +lot.getNama());
Bid bid = lot.getTertinggi();
if (bid==null)
{
System.out.println("Tidak ada tawaran untuk barang ini");
}
else
{
System.out.println("Barang ini telah terjual kepada " +
bid.getNama().getNama() + " dengan harga : \t"
+ bid.getHarga());
}
}
}
}
view raw Auction hosted with ❤ by GitHub
2. Class Bid

/**
* Write a description of class Bid here.
*
* @author (Nadia Tiara Febriana)
* @version (25-10-2020)
*/
public class Bid
{
private final Person penawar;
private final long harga;
public Bid(Person penawar, long harga)
{
this.penawar = penawar;
this.harga = harga;
}
public Person getNama()
{
return penawar;
}
public long getHarga()
{
return harga;
}
}
view raw Bid hosted with ❤ by GitHub
3. Class Lot

/**
* Write a description of class Lot here.
*
* @author (Nadia Tiara Febriana)
* @version (25-10-2020)
*/
public class Lot
{
private final int kodeLots;
private String namaLots;
private Bid maksTawaran;
public Lot(int kodeLots, String namaLots)
{
this.kodeLots = kodeLots;
this.namaLots = namaLots;
this.maksTawaran = null;
}
public boolean bidFor(Bid tawaran)
{
if(maksTawaran == null) {
//ketika tak ada tawaran sebelumnya
maksTawaran = tawaran;
return true;
}
else if(tawaran.getHarga() > maksTawaran.getHarga()) {
//ketika tawaran lebih tinggi daripada tawaran sebelumnya
maksTawaran = tawaran;
return true;
}
else {
//ketika tawaran tak lebih tinggi daripada tawaran sebelumnya
return false;
}
}
public String toString()
{
String details = kodeLots + " : " + namaLots;
if(maksTawaran != null) {
details += " Tawaran : " +
maksTawaran.getHarga();
}
else {
details += " (Tidak ada tawaran)";
}
return details;
}
public int getKode()
{
return kodeLots;
}
public String getNama()
{
return namaLots;
}
public Bid getTertinggi()
{
return maksTawaran;
}
}
view raw Lot hosted with ❤ by GitHub
4. Class Person

/**
* Write a description of class Person here.
*
* @author (Nadia Tiara Febriana)
* @version (25-10-2020)
*/
public class Person
{
private final String Nama;
public Person(String Nama)
{
this.Nama = Nama;
}
public String getNama()
{
return Nama;
}
}
view raw Person hosted with ❤ by GitHub
Berikut hasil output dari auction system jika dijalankan:




B.Grouping Project Java Collection

1. ArrayList dengan While

import java.util.*;
public class ArrayListContoh
{
public static void main (String [] args)
{
//membuat array list
ArrayList<String> al=new ArrayList<String>();
//menambahkan objek ke arraylist
al.add("Ahmad");
al.add("Budi");
al.add("Cecep");
al.add("Dora");
//menampilkan isi arraylist
Iterator itr=al.iterator();
{
while(itr.hasNext())
{
System.out.println(itr.next());
}
}
}
}
view raw ArrayListContoh hosted with ❤ by GitHub

Berikut hasil outputnya:


2. ArrayList dengan For

import java.util.ArrayList;
public class ArrayListFor
{
public static void main (String[] args)
{
//membuat arraylist
ArrayList<String> al=new ArrayList<String>();
//menambahkan objek ke arraylist
al.add("Ahmad");
al.add("Budi");
al.add("Cecep");
al.add("Dora");
//menampilkan isi arraylist
for(String obj:al)
{
System.out.println(obj);
}
}
}
view raw ArrayListFor hosted with ❤ by GitHub
Berikut hasil outputnya:


3. ArrayList Class

public class Mahasiswa
{
private String nim ;
private String nama;
private int uts;
private int uas;
private int tugas;
public Mahasiswa (String NIM,String Nama, int Tugas, int UTS, int UAS)
{
NIM = nim;
Nama = nama;
Tugas = tugas;
UTS = uts;
UAS = uas;
}
public String getNim()
{
return nim;
}
public String getNama()
{
return nama ;
}
public int getTugas()
{
return tugas;
}
public int getUts()
{
return uts;
}
public int getUas()
{
return uas;
}
}
view raw Mahasiswa hosted with ❤ by GitHub

import java.util.*;
public class ArrayListClass
{
public static void main(String[] args)
{
//data
Mahasiswa mhs1 = new Mahasiswa ("K121", "Adam Kamil", 67, 69, 91);
Mahasiswa mhs2 = new Mahasiswa ("K122", "Budi Ridho", 57, 89, 93);
Mahasiswa mhs3 = new Mahasiswa ("K123", "Cecep Mansyur", 77, 79, 80);
Mahasiswa mhs4 = new Mahasiswa ("K124", "Dadang Habibie", 67, 79, 60);
Mahasiswa mhs5 = new Mahasiswa ("K125", "Evi Julita", 89, 79, 95);
//membuat arraylist
ArrayList<Mahasiswa> al=new ArrayList<Mahasiswa>();
//menambahkan objek ke arraylist
al.add(mhs1);
al.add(mhs2);
al.add(mhs3);
al.add(mhs4);
al.add(mhs5);
//menampilkan isi arraylist
Iterator itr=al.iterator();
{
while(itr.hasNext())
{
Mahasiswa tampungMhs = (Mahasiswa)itr.next();
System.out.print(tampungMhs.getNim()+" ");
System.out.print(tampungMhs.getNama()+" ");
System.out.print(tampungMhs.getTugas()+" ");
System.out.print(tampungMhs.getUts()+" ");
System.out.println(tampungMhs.getUas()+" ");
}
}
}
}
view raw ArrayListClass hosted with ❤ by GitHub
Berikut hasil outputnya:


4. ArrayList addAll

import java.util.ArrayList;
import java.util.Iterator;
public class ArrayListGabung
{
public static void main(String[] args)
{
//membuat arraylist
ArrayList<String> al=new ArrayList<String>();
//menambahkan objek ke arraylist
al.add("Ahmad");
al.add("Budi");
al.add("Cecep");
al.add("Dora");
ArrayList<String> al2 = new ArrayList<String>();
al2.add("Endo");
al2.add("Fany");
al.addAll(al2);
//menampilkan isi arrayList
Iterator itr=al.iterator();
while(itr.hasNext()) {
System.out.println(itr.next());
}
}
}
view raw ArrayListGabung hosted with ❤ by GitHub

Berikut hasil outputnya:


5. ArrayList RemoveAll

import java.util.ArrayList;
import java.util.Iterator;
public class ArrayListRemoveAll
{
public static void main(String[] args)
{
//membuat arraylist
ArrayList<String> al=new ArrayList<String>();
//menambahkan objek ke arraylist
al.add("Ahmad");
al.add("Budi");
al.add("Cecep");
al.add("Dora");
ArrayList<String> al2 = new ArrayList<String>();
al2.add("Endo");
al2.add("Dora");
al.removeAll(al2);
//menampilkan isi arrayList
Iterator itr=al.iterator();
while(itr.hasNext()){
System.out.println(itr.next());
}
}
}
view raw ArrayListRemoveAll hosted with ❤ by GitHub
Berikut hasil outputnya:


6. ArrayList RetainAll

import java.util.ArrayList;
import java.util.Iterator;
public class ArrayListRetain
{
public static void main(String[] args)
{
//membuat arraylist
ArrayList<String> al=new ArrayList<String>();
//menambahkan objek ke arraylist
al.add("Ahmad");
al.add("Budi");
al.add("Cecep");
al.add("Dora");
ArrayList<String> al2 = new ArrayList<String>();
al2.add("Endo");
al2.add("Dora");
al.retainAll(al2);
//menampilkan isi arrayList
Iterator itr=al.iterator();
while(itr.hasNext()) {
System.out.println(itr.next());
}
}
}
view raw arraylistretain hosted with ❤ by GitHub
Berikut hasil outputnya:


7. Linked List

import java.util.*;
public class LinkedListContoh
{
public static void main(String args[])
{
LinkedList<String> al=new LinkedList<String>();
al.add("Zaza");
al.add("Yadi");
al.add("Mutiara");
al.add("Santoso");
Iterator<String> itr=al.iterator();
while(itr.hasNext()) {
System.out.println(itr.next());
}
}
}
view raw Linkedlist hosted with ❤ by GitHub
Berikut hasil outputnya:


8. Hash Set

import java.util.*;
class HashSetContoh
{
public static void main(String args[])
{
HashSet<String> al=new HashSet<String>();
al.add("Anto");
al.add("Budi");
al.add("Cecep");
al.add("Dani");
al.add("Eka");
Iterator<String> itr=al.iterator();
while(itr.hasNext()) {
System.out.println(itr.next());
}
}
}
view raw hashset hosted with ❤ by GitHub
Berikut hasil outputnya:


9. Linked Hash Set

import java.util.LinkedHashSet;
import java.util.Iterator;
class LinkedHashSetContoh
{
public static void main(String args[])
{
LinkedHashSet<String> al=new LinkedHashSet<String>();
al.add("Anto");
al.add("Budi");
al.add("Cecep");
al.add("Dudi");
al.add("Eka");
Iterator<String> itr=al.iterator();
while(itr.hasNext()) {
System.out.println(itr.next());
}
}
}
view raw linkedhashset hosted with ❤ by GitHub
Berikut hasil outputnya:


10. Hash Map

import java.util.*;
class HashMapContoh
{
public static void main(String args[])
{
HashMap<Integer,String> hm=new HashMap<Integer,String>();
hm.put(100,"Kano");
hm.put(101,"Laila");
hm.put(102,"Badu");
hm.put(null, "Johan");
for(Map.Entry m:hm.entrySet()) {
System.out.println(m.getKey()+" "+m.getValue());
}
}
}
view raw hashmap hosted with ❤ by GitHub
Berikut hasil outputnya:


11. Hash Table

import java.util.*;
class HashTableContoh
{ public static void main(String args[])
{ Hashtable<Integer,String> hm=new Hashtable<Integer,String>();
hm.put(100,"Andri");
hm.put(102,"Roni");
hm.put(101,"Fahrul");
hm.put(103,"Badu");
for(Map.Entry m:hm.entrySet()){
System.out.println(m.getKey()+" "+m.getValue());
}
}
}
view raw hashtable hosted with ❤ by GitHub
Berikut hasil outputnya:



Komentar

Posting Komentar

Postingan Populer