Program Diskon Barang

Source Code :

public class Jawaban{
public static void main (String [] args){
int kode, harga, diskon;
String jenis;
String sDiskon;

System.out.print("KODE  : ");
kode = Integer.parseInt(System.console().readLine());

System.out.print("JENIS : ");
jenis = System.console().readLine();

System.out.print("HARGA : ");
harga = Integer.parseInt(System.console().readLine());

if(jenis.toUpperCase().equals("A"))
{
diskon = harga * 10 / 100;
sDiskon = "10%";
}
else if(jenis.toUpperCase().equals("B"))
{
diskon = harga * 15 / 100;
sDiskon = "15%";
}
else if(jenis.toUpperCase().equals("C"))
{
diskon = harga * 20 / 100;
sDiskon = "20%";
}
else
{
diskon = 0;
sDiskon = "0%";
}

harga = harga - diskon;
System.out.print("Jenis barang " + jenis.toUpperCase());
System.out.print(" Mendapatkan diskon = " + sDiskon);
System.out.print(" Harga setelah didiskon " + harga);
}
}


Outputnya :

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Bikin Program Nama Dengan GUI

Source Code :

import javax.swing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.Container;
import java.awt.FlowLayout;

public class Jawaban1_GUI extends JFrame implements ActionListener
{
private JButton btnNim;
private JButton btnNama;
private JButton btnJurusan;

    public Jawaban1_GUI() 
    {
    setTitle("RESPONSI GUI");
    setDefaultCloseOperation(DISPOSE_ON_CLOSE);
    setLocationRelativeTo(null);
    setResizable(false);
   
    Container pane = getContentPane();
    pane.setLayout(new FlowLayout(FlowLayout.LEFT, 10, 10));
   
    btnNim = new JButton("Nomor Mahasiswa");
    btnNama = new JButton("Nama");
    btnJurusan = new JButton("Jurusan dan Kelas");
   
    pane.add(btnNim);
    pane.add(btnNama);
    pane.add(btnJurusan);
   
    btnNim.addActionListener(this);
    btnNama.addActionListener(this);
    btnJurusan.addActionListener(this);
   
    pack();
    }
    
    public void actionPerformed(ActionEvent evt)
    {
    Object src = evt.getSource();
    JOptionPane.showMessageDialog(null, src == btnNim ? "12.11.6156" : src == btnNama ? " JAKA " : 
    "TEKNIK INFORMATIKA KELAS TI - 06");
    }
    
    public static void main(String [] args)
    {
    new Jawaban1_GUI().setVisible(!false && 1 < 5); // -> true, lolololol :p
    }
}

Outputnya :

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Polymorphism

Source Code :

public class Polymorphism 
{
public static void main(String [] args)
    {
    String nama [] = 
    {
    "Hewan",
    "Anjing",
    "Bebek",
    "Kucing"
    };
   
    Hewan [] hewan =
{
new Hewan(),
new Anjing(),
new Bebek(),
new Kucing()
};

for(int i = 0; i < hewan.length && i < nama.length; i++)
{
System.out.println("Suara " + nama[i] + "  \t: " + hewan[i].suara());
}
    }
}

class Hewan
{
public String suara()
{
return "Unknown";
}
}

class Anjing extends Hewan
{
public String suara()
{
return "Guk.. Guk..!!";
}
}

class Bebek extends Hewan
{
public String suara()
{
return "Wek.. Wek..!!";
}
}

class Kucing extends Hewan
{
public String suara()
{
return "Miaow...!!";
}
}

Outputnya :

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Inheritance

Source Code :

import java.util.Scanner;

public class Inheritance {

public static void main(String [] args)

{

Paus paus = new Paus();

Cheetah cheetah = new Cheetah();

Sapi sapi = new Sapi();

Scanner in = new Scanner(System.in);

while(true)

{

System.out.println("\n___PILIH JENIS MAMALIA___");

System.out.println("[1]. IKAN PAUS");

System.out.println("[2]. CHEETAH");

System.out.println("[3]. SAPI");

System.out.println("[4]. EXIT");

System.out.println();

System.out.print("PILIHAN : ");

switch(in.nextInt())

{

case 1:

paus.ciri();

System.out.println("dan Mamalia yang anda pilih adalah " + paus.getNama());

paus.tampilkan();

break;

case 2:

cheetah.ciri();

System.out.println("dan Mamalia yang anda pilih adalah " + cheetah.getNama());

cheetah.tampilkan();

break;

case 3:

sapi.ciri();

System.out.println("dan Mamalia yang anda pilih adalah " + sapi.getNama());

sapi.tampilkan();

break;

case 4:

return;

default:

System.out.println("Salah masukin");

}

}

}

}

class Mamalia

{

private String nama;

public Mamalia(String nama)

{

this.nama = nama;

}

public void ciri()

{

System.out.println("Ciri umum mamalia adalah bernafas dengan paru-paru, "

+ "berkembang biak dengan cara beranak");

}

public String getNama()

{

return nama;

}

}

class Paus extends Mamalia

{

public Paus()

{

super("Ikan Paus");

}

public void tampilkan()

{

System.out.println("Mamalia ini berada di laut");

System.out.println("Paus termasuk jenis mamalia terbesar");

}

}

class Cheetah extends Mamalia

{

public Cheetah()

{

super("Cheetah");

}

public void tampilkan()

{

System.out.println("Mamalia ini berada di darat");

System.out.println("Cheetah termasuk mamalia pelari tercepat");

}

}

class Sapi extends Mamalia

{

public Sapi()

{

super("Sapi");

}

public void tampilkan()

{

System.out.println("Mamalia ini berada di darat");

System.out.println("Sapi termasuk jenis mamalia pemamahbiak");

}

}

Outputnya :

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Piramida

Source Code :

public class Piramid5
{
public static void main (String [] args)
{
int tinggi;

System.out.print("tinggi : ");
tinggi = Integer.parseInt(System.console().readLine());

for(int i = 0; i < tinggi; i++)
{
System.out.println("");

for(int j = 0; j < i; j++)
System.out.print(" ");

for(int j = tinggi; j > i; j--)
System.out.print("*");

for(int j = tinggi - 1; j > i; j--)
System.out.print("*");


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

Outputnya :

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Mencari Luas Keliling Lingkaran

Source Code :

class LuasKelLingkaran{
public static void main (String [] xyz){
double r, kel, luas;
   double PHI = 3.14;
String nim = "12.11.6156";

r = 50;
luas = PHI * Math.pow(r, 2);

kel = 2 * PHI * r;

System.out.println("\n\n\n\n\n\n\n\n\n\n");
System.out.println("|=========================================|");
System.out.println("|    PROGRAM MENGHITUNG LUAS LINGKARAN    |");
System.out.println("|=========================================|");
System.out.println("| NIM                : "+ nim +"          |");
System.out.println("|                                         |");
System.out.println("| Jari - jari        : "+ r +"            |");
System.out.println("|                                         |");
System.out.println("| Luas Lingkaran     : "+ luas +          |");
System.out.println("| Keliling Lingkaran : "+ kel +"          |");
System.out.println("|=========================================|");
System.out.println("\n\n\n\n\n\n\n\n\n\n");
}


Outputnya :

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Program Nilai Akhir

Source Code :

import javax.swing.JOptionPane;
public class NilaiAkhir {

    public NilaiAkhir() {
    }
    
    public static void main (String [] args) throws NullPointerException, Exception{

final int MAX = 5;
int i = 0;
int hasil;
char huruf;
String ket;

int [] uas = new int [MAX];
int [] uts = new int [MAX];
int [] tugas = new int [MAX];
String [] nama  = new String [MAX];
String [] nim  = new String [MAX];
String ulang = null;

do{
nim[i] = JOptionPane.showInputDialog ("MASUKKAN NIM : ");
nama[i] = JOptionPane.showInputDialog ("MASUKKAN NAMA : ");
tugas[i] = Integer.parseInt(JOptionPane.showInputDialog("MASUKKAN NILAI TUGAS :"));
uts[i] = Integer.parseInt(JOptionPane.showInputDialog("MASUKKAN NILAI UTS :"));
uas[i] = Integer.parseInt(JOptionPane.showInputDialog("MASUKKAN NILAI UAS :"));

i++;

if(i < MAX)
ulang = JOptionPane.showInputDialog ("MAU MENAMBAH DATA LAGI [Y/T] :");
else
ulang = "T";

}while(ulang.toUpperCase().equals("Y"));

System.out.println("No\tNIM\t\tNAMA\t\tTUGAS\tUTS\tUAS\tNILAI\tHURUF\tKETERANGAN");
for(int j = 0; j < i; j++){
hasil = (tugas[j] + uts[j] + uas[j]) / 3;

if(hasil >= 85)
huruf = 'A';
else if(hasil >= 75)
huruf = 'B';
else if(hasil >= 65)
huruf = 'C';
else if(hasil >= 50)
huruf = 'D';
else
huruf = 'E';

switch(huruf){
case 'A':
case 'B':
case 'C': ket = "Lulus"; break;
default : ket = "Tidak lulus";
}

System.out.print(""+ (j + 1));
System.out.print("\t"+ nim[j]);
System.out.print("\t"+ nama[j]);
System.out.print("\t\t"+ tugas[j]);
System.out.print("\t"+ uts[j]);
System.out.print("\t"+ uas[j]);
System.out.print("\t"+ hasil);
System.out.print("\t"+ huruf);
System.out.print("\t"+ ket);
System.out.println();
}
}
}


Outputnya :

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