Contoh Aplikasi Tiket Pesawat Sederhana dengan JAVA

Masih belajar tentang Source code, iseng ajja buat aplikasi sederhanan pemesanan tiket pesawat untuk beberapa maskapa dengan Aplikasi JAVA NETBEANS.
Contoh dibawah ini menggunakan OOP, Pemanggilan suatu objeck dari suatu kelas, OK Langsung ajja Source Code nya




/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package tugas2;

import javax.swing.JOptionPane;

/**
 *
 * @author Handra
 */


public class TiketPesawat {
    void pesantiket(){
        String rute=JOptionPane.showInputDialog("Masukkan Rute Perjalanan");
        String nama=JOptionPane.showInputDialog("Masukkan Nama");
        int umur=Integer.valueOf(JOptionPane.showInputDialog("Masukkan Umur Anda"));
        String maskapai=JOptionPane.showInputDialog("Maskapai yang ingin digunakan"); //Garuda,Lion Air & Air Asia
        String kelas=JOptionPane.showInputDialog("Kelas");
     
     
        System.out.println("Nama : "+nama);
        System.out.println("Umur : "+umur +" Tahun");
        System.out.println("Rute Perjalanan : "+rute);
        System.out.println("Maskapai Yang Digunakan : "+maskapai);
        System.out.println("Kelas Penerbangan : "+kelas);
     
     
        if(maskapai.equalsIgnoreCase("Garuda") && rute.equalsIgnoreCase("Lombok-Surabaya")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +878000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +845000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+680000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 650000);
            }
        }else if(maskapai.equalsIgnoreCase("Garuda") && rute.equalsIgnoreCase("Surabaya-Lombok")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +895000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +870000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+698000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 675000);
            }
        }else if(maskapai.equalsIgnoreCase("Garuda") && rute.equalsIgnoreCase("Jakarta-Lombok")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +965000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +925000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+850000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 815000);
            }
        }else if(maskapai.equalsIgnoreCase("Garuda") && rute.equalsIgnoreCase("Lombok-Jakarta")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +936000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +912000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+765000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 675000);
            }
        }else if(maskapai.equalsIgnoreCase("Garuda") && rute.equalsIgnoreCase("Lombok-Bali")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +496000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +478000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+380000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 330000);
            }
        }else if(maskapai.equalsIgnoreCase("Garuda") && rute.equalsIgnoreCase("Bali-Lombok")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +505000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +490000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+399000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 345000);
            }
        }else if(maskapai.equalsIgnoreCase("Lion Air") && rute.equalsIgnoreCase("Lombok-Surabaya")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +820000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +786000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+650000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 619000);
            }
        }else if(maskapai.equalsIgnoreCase("Lion Air") && rute.equalsIgnoreCase("Surabaya-Lombok")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +875000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +795000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+665000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 620000);
            }
        }else if(maskapai.equalsIgnoreCase("Lion Air") && rute.equalsIgnoreCase("Jakarta-Lombok")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +935000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +886000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+837000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 769000);
            }
        }else if(maskapai.equalsIgnoreCase("Lion Air") && rute.equalsIgnoreCase("Lombok-Jakarta")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +920000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +856000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+760000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 705000);
            }
        }else if(maskapai.equalsIgnoreCase("Lion Air") && rute.equalsIgnoreCase("Lombok-Bali")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +485000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +468000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+365000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 310000);
            }
        }else if(maskapai.equalsIgnoreCase("Lion Air") && rute.equalsIgnoreCase("Bali-Lombok")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +485000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +420000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+376000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 337000);
            }
        }else if(maskapai.equalsIgnoreCase("Air Asia") && rute.equalsIgnoreCase("Lombok-Surabaya")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +809000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +781000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+649000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 615000);
            }
        }else if(maskapai.equalsIgnoreCase("Air Asia") && rute.equalsIgnoreCase("Surabaya-Lombok")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +830000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +791000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+635000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 619000);
            }
        }else if(maskapai.equalsIgnoreCase("Air Asia") && rute.equalsIgnoreCase("Jakarta-Lombok")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +905000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +860000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+815000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 720000);
            }
        }else if(maskapai.equalsIgnoreCase("Air Asia") && rute.equalsIgnoreCase("Lombok-Jakarta")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +890000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +845000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+726000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 699500);
            }
        }else if(maskapai.equalsIgnoreCase("Air Asia") && rute.equalsIgnoreCase("Lombok-Bali")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +460000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +410000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+325000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 298000);
            }
        }else if(maskapai.equalsIgnoreCase("Air Asia") && rute.equalsIgnoreCase("Bali-Lombok")){
            if(umur >= 17 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. " +467000);
            }else if(umur>=17 && kelas.equalsIgnoreCase("Ekonomi")) {
                System.out.println("Harga Rp. " +415000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Vip")){
                System.out.println("Harga Rp. "+365000);
            }else if(umur>=1 && kelas.equalsIgnoreCase("Ekonomi")){
                System.out.println("Harga Rp. "+ 325000);
            }
        }else{
            JOptionPane.showMessageDialog(null, "Data Yang Anda Masukkan Salah");
        }
   
    }
    public static void main(String[] args) {
        TiketPesawat tik=new TiketPesawat();
        tik.pesantiket();
    }
     
}

Read More

Membuat Aplikasi Chatting Di Java (Netbeans)

Source Code untuk membuat Client Server pada Java, Ini dia Kodingnya :)


/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package pkg1410530244_clientserverhandra;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;

/**
 *
 * @author HANDRA
 */
public class ClientServer extends javax.swing.JFrame implements  Runnable{
    Socket client;
    ServerSocket server;
    BufferedReader Server_Reader, Client_Reader;
    BufferedWriter Server_Writer, Client_Writer;
   
    /**
     * Creates new form ClientServer
     */
    public ClientServer() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();
        jCBServer = new javax.swing.JComboBox();
        jBtOn = new javax.swing.JButton();
        jBtAbout = new javax.swing.JButton();
        jtxtUsername = new javax.swing.JTextField();
        LChat = new java.awt.List();
        jtxtChat = new javax.swing.JTextField();
        jBtSend = new javax.swing.JButton();
        jButton1 = new javax.swing.JButton();
        jBtClear = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jCBServer.setFont(new java.awt.Font("Times New Roman", 1, 18)); // NOI18N
        jCBServer.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Server", "Client" }));
        jCBServer.addItemListener(new java.awt.event.ItemListener() {
            public void itemStateChanged(java.awt.event.ItemEvent evt) {
                jCBServerItemStateChanged(evt);
            }
        });

        jBtOn.setFont(new java.awt.Font("Times New Roman", 1, 18)); // NOI18N
        jBtOn.setText("ON");
        jBtOn.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jBtOnActionPerformed(evt);
            }
        });

        jBtAbout.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
        jBtAbout.setText("ABOUT");
        jBtAbout.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jBtAboutActionPerformed(evt);
            }
        });

        jtxtUsername.setFont(new java.awt.Font("Times New Roman", 0, 11)); // NOI18N
        jtxtUsername.setText("USERNAME");
        jtxtUsername.setFocusable(false);

        LChat.setFont(new java.awt.Font("Times New Roman", 0, 18)); // NOI18N

        jtxtChat.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
        jtxtChat.setText("Insert Message Here");
        jtxtChat.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jtxtChatActionPerformed(evt);
            }
        });

        jBtSend.setFont(new java.awt.Font("Times New Roman", 1, 11)); // NOI18N
        jBtSend.setText("SEND");
        jBtSend.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jBtSendActionPerformed(evt);
            }
        });

        jButton1.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
        jButton1.setText("HELP");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jBtClear.setFont(new java.awt.Font("Times New Roman", 1, 11)); // NOI18N
        jBtClear.setText("CLEAR");
        jBtClear.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jBtClearActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(27, 27, 27)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addComponent(jtxtUsername, javax.swing.GroupLayout.PREFERRED_SIZE, 280, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(0, 0, Short.MAX_VALUE))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jtxtChat, javax.swing.GroupLayout.PREFERRED_SIZE, 280, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(LChat, javax.swing.GroupLayout.PREFERRED_SIZE, 280, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addGap(18, 18, 18)
                                .addComponent(jBtSend, javax.swing.GroupLayout.PREFERRED_SIZE, 74, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                                .addGap(20, 20, 20)
                                .addComponent(jBtClear, javax.swing.GroupLayout.PREFERRED_SIZE, 72, javax.swing.GroupLayout.PREFERRED_SIZE)))
                        .addContainerGap(27, Short.MAX_VALUE))))
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jCBServer, javax.swing.GroupLayout.PREFERRED_SIZE, 123, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(18, 18, 18)
                .addComponent(jBtOn, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jBtAbout)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jButton1))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jBtAbout, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(1, 1, 1)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jBtOn, javax.swing.GroupLayout.DEFAULT_SIZE, 41, Short.MAX_VALUE)
                            .addComponent(jCBServer, javax.swing.GroupLayout.DEFAULT_SIZE, 41, Short.MAX_VALUE))))
                .addGap(18, 18, 18)
                .addComponent(jtxtUsername, javax.swing.GroupLayout.PREFERRED_SIZE, 42, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(LChat, javax.swing.GroupLayout.PREFERRED_SIZE, 202, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(94, 94, 94)
                        .addComponent(jBtClear, javax.swing.GroupLayout.PREFERRED_SIZE, 37, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGap(16, 16, 16)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jtxtChat, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jBtSend, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(31, Short.MAX_VALUE))
        );

        jLabel1.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
        jLabel1.setText("APLIKASI CHATING");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
            .addGroup(layout.createSequentialGroup()
                .addGap(88, 88, 88)
                .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 255, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 47, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void client_connection(){
        try{
            String ip = JOptionPane.showInputDialog("Masukkan IP Address");
            client = new Socket(ip,2000);
            jCBServer.setEnabled(false);
            Server_Reader = new BufferedReader(new InputStreamReader(client.getInputStream()));
            Server_Writer = new BufferedWriter(new OutputStreamWriter(client.getOutputStream()));
            jBtOn.setText("Disconnect");
        }catch(UnknownHostException ex){
            System.out.println("Accept Failed");
            System.exit(-1);
        }catch(IOException ex){
            Logger.getLogger(ClientServer.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
   
    private void read_connection(){
        try{
            try{
                try{
                    server = new ServerSocket(2000);
                    this.setTitle("Please Wait...");
                }catch(IOException ex){
                    System.out.println("Could not  listen");
                    System.exit(-1);
                }
                client = server.accept();
                this.setTitle("Connected" + client.getInetAddress());
            }catch(IOException ex){
                System.out.println("Accept Failed");
                System.exit(-1);
            }
            Server_Reader = new BufferedReader(new InputStreamReader(client.getInputStream()));
            Server_Writer = new BufferedWriter(new OutputStreamWriter(client.getOutputStream()));
        }catch(IOException ex){
            System.out.println("Read Failed");
            System.exit(-1);
        }
    }
   
    private void disconnected_by_client(){
        try{
            client.close();
            Server_Reader.close();
            Server_Writer.close();
            jCBServer.setEnabled(true);
            jBtOn.setText("Connect");
        }catch(IOException ex){
            Logger.getLogger(ClientServer.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
   
    private void stopped_by_server(){
        try{
            Server_Reader.close();
            Server_Writer.close();
            jBtOn.setText(" O N");
            setTitle("Disconnect");
        }catch(IOException ex){
            Logger.getLogger(ClientServer.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
   
    private void jBtOnActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jBtOnActionPerformed
        if(jBtOn.getText().equals("Connect")){
            jBtOn.setText("Disconnect");
            client_connection();
            Thread thread = new Thread(this);
            thread.start();
        }else if (jCBServer.getSelectedItem().equals("Server")){
            jBtOn.setText("O F F");
            read_connection();
            Thread thread = new Thread(this);
            thread.start();
        }         
       
    }//GEN-LAST:event_jBtOnActionPerformed

    private void jBtAboutActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jBtAboutActionPerformed
       new About().setVisible(true);
    }//GEN-LAST:event_jBtAboutActionPerformed

    private void jBtSendActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jBtSendActionPerformed
        try {
            Server_Writer.write(jtxtUsername.getText() + " : " + jtxtChat.getText());
            Server_Writer.newLine();
            Server_Writer.flush();
        }catch(IOException ex){
            Logger.getLogger(ClientServer.class.getName()).log(Level.SEVERE, null, ex);
        }
        LChat.add("Me : " +  jtxtChat.getText());
        jtxtChat.setText(" ");
    }//GEN-LAST:event_jBtSendActionPerformed

    private void jCBServerItemStateChanged(java.awt.event.ItemEvent evt) {//GEN-FIRST:event_jCBServerItemStateChanged
        if (jCBServer.getSelectedItem().equals("Server")){
            jBtOn.setText("O N");
            jtxtUsername.setText("Server");
        }else{
            jBtOn.setText("Connect");
            jtxtUsername.setText("Client");
        }
    }//GEN-LAST:event_jCBServerItemStateChanged

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
        new Help().setVisible(true);
    }//GEN-LAST:event_jButton1ActionPerformed

    private void jBtClearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jBtClearActionPerformed
        LChat.removeAll();
    }//GEN-LAST:event_jBtClearActionPerformed

    private void jtxtChatActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jtxtChatActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jtxtChatActionPerformed

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(ClientServer.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(ClientServer.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(ClientServer.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(ClientServer.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new ClientServer().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private java.awt.List LChat;
    private javax.swing.JButton jBtAbout;
    private javax.swing.JButton jBtClear;
    private javax.swing.JButton jBtOn;
    private javax.swing.JButton jBtSend;
    private javax.swing.JButton jButton1;
    private javax.swing.JComboBox jCBServer;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JTextField jtxtChat;
    private javax.swing.JTextField jtxtUsername;
    // End of variables declaration//GEN-END:variables

    @Override
    public void run() {
       while(true){
           try {
               LChat.add(Server_Reader.readLine());
           } catch (IOException ex) {
               Logger.getLogger(ClientServer.class.getName()).log(Level.SEVERE, null, ex);
           }
       }
    }
}




Berikut adalah Hasil Dari program Client Server

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Membuat Daftar Nilai Dengan JOptionPane

Source Code :

import javax.swing.JOptionPane;
import java.io.*;

public class nilai
{
public static void main (String[]args)
{
String uts,uas,nama,nim,grade;
String pilihan="y";
int[] iuts = new int[50];
int[] iuas = new int[50];
int[] nAkhir = new int[50];
int[] no = new int[50];
boolean y=true;
int i=0;

System.out.println("No" + "   NIM "+ " nama " + " Nilai UTS " + " Nilai UAS " + " Nilai Akhir " + " Grade " );
do
{
nim = JOptionPane.showInputDialog("Masukkan NIM ");
nama = JOptionPane.showInputDialog("Masukkan NAMA ");
uts = JOptionPane.showInputDialog("Masukkan Nilai UTS ");
uas = JOptionPane.showInputDialog("Masukkan Nilai UAS ");
pilihan = JOptionPane.showInputDialog("Mau menambah data lagi(y/t)");

 iuts[i] = Integer.parseInt(uts);
 iuas[i] = Integer.parseInt(uas);
 
 
 nAkhir[i] = (iuts[i]+iuas[i])/2;
 
 if((nAkhir[i]<=100)&&(nAkhir[i]>=85))
 grade="A";
 else if ((nAkhir[i]<85)&&(nAkhir[i]>=75))
 grade="B";
 else if ((nAkhir[i]<75)&&(nAkhir[i]>=65))
 grade="C";
 else if ((nAkhir[i]<65)&&(nAkhir[i]>=50))
 grade="D";
 else if (nAkhir[i]<50)
 grade="E";
 else {
 grade="Salah memasukkan nilai XD";
 }
 
 System.out.println( no[i]+"   "+ nim +"   "+ nama +"   "+ iuts[i] +"   "+ iuas[i] +"     "+ nAkhir[i] +"   "+ grade+"   ");
 
 if("t".equals(pilihan))
  y=false;
} while (y);


}
}

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