Penggunaan JoptionPane di Java

Assalamu’alaikum wr wb,

            Dalam penjelasan projek kali ini sama dengan yang saya jelaskan dalam tugas kemarin. Yaitu program penjualan menggunakan JAVA GUI,untuk menjalankannya program ini user hanya memilih berupa kode barang,kode yang dipilih akan dikalikan dengan jumlah yang akan dibeli.User juga bisa memilih merk barang dan ukuran sepatu yang akan dibeli dengan menggunakan combo box.Jika sudah membeli user bisa langsung keluar dengan memilih button “Keluar” menggunakan Joptionpane.

Contoh Design & Output Run;

Variable :

    private javax.swing.JComboBox<String> CmbmerkF;

    private javax.swing.JComboBox<String> Cmbsb;

    private javax.swing.JComboBox<String> Cmbukuranf;

    private javax.swing.JComboBox<String> Cmbukurans;

    private javax.swing.JRadioButton RB1;

    private javax.swing.JRadioButton RB2;

    private javax.swing.JRadioButton RB3;

    private javax.swing.JRadioButton RB4;

    private javax.swing.JRadioButton RB5;

    private javax.swing.JButton btnHapus;

    private javax.swing.JButton btnHitung;

    private javax.swing.JComboBox<String> cmbbs;

    private javax.swing.JComboBox<String> cmbjk;

    private javax.swing.JComboBox<String> cmbjt;

    private javax.swing.JTextField hslHarga;

    private javax.swing.JTextField hslJenis;

    private javax.swing.JButton jKnfr;

    private javax.swing.JLabel jLabel1;

    private javax.swing.JLabel jLabel10;

    private javax.swing.JLabel jLabel13;

    private javax.swing.JLabel jLabel14;

    private javax.swing.JLabel jLabel16;

    private javax.swing.JLabel jLabel2;

    private javax.swing.JLabel jLabel3;

    private javax.swing.JLabel jLabel4;

    private javax.swing.JLabel jLabel5;

    private javax.swing.JLabel jLabel6;

    private javax.swing.JLabel jLabel7;

    private javax.swing.JLabel jLabel8;

    private javax.swing.JLabel jLabel9;

    private javax.swing.JPanel jPanel1;

    private javax.swing.JTextField totalBayar;

    private javax.swing.JTextField txtHasil;

    private javax.swing.JTextField txtJenis;

Contoh SourceCode :

import javax.swing.JOptionPane;

/*

 * 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.

 */

/**

 *

 * @author ASUS-PC

 */

public class TugasUts extends javax.swing.JFrame {

    double jenis, jumlahbarang, tarif;

    String nama;

    /**

     * Creates new form TugasUts

     */

    public TugasUts() {

        initComponents();

    }

private void btnHitungActionPerformed(java.awt.event.ActionEvent evt) {                                         

        jenis = Float.parseFloat(txtJenis.getText());

        jumlahbarang = Float.parseFloat(txtHasil.getText());

        if (jenis == 1) {

            hslJenis.setText("Sepatu Bola");

            hslHarga.setText("Rp. 200000");

           

        } else if (jenis == 2) {

            hslJenis.setText("Sepatu Futsal");

            hslHarga.setText("Rp. 150000");

        } else if (jenis == 3) {

            hslJenis.setText("Jersey Timnas");

            hslHarga.setText("Rp. 95000");

        } else if (jenis == 4) {

            hslJenis.setText("Jersey Klub");

            hslHarga.setText("Rp. 75000");

        } else if (jenis == 5) {

            hslJenis.setText("Bola Sepak");

            hslHarga.setText("Rp. 125000");

        }

        if (jenis == 1) {

            tarif = jumlahbarang * 200000;

            totalBayar.setText("Rp. " + tarif);

        } else if (jenis == 2) {

            tarif = jumlahbarang * 150000;

            totalBayar.setText("Rp. " + tarif);

        } else if (jenis == 3) {

            tarif = jumlahbarang * 95000;

            totalBayar.setText("Rp. " + tarif);

        } else if (jenis == 4) {

            tarif = jumlahbarang * 75000;

            totalBayar.setText("Rp. " + tarif);

        } else if (jenis == 5) {

            tarif = jumlahbarang * 125000;

            totalBayar.setText("Rp. " + tarif);

        }

    }                                        

SourceCode ButtonHapus :   
 private void btnHapusActionPerformed(java.awt.event.ActionEvent evt) {                                        

        txtJenis.setText("");

        txtHasil.setText("");

        hslJenis.setText("");

        hslHarga.setText("");

        totalBayar.setText("");

    }                                    

SourceCode JOptionePane :

private void jKnfrActionPerformed(java.awt.event.ActionEvent evt) {                                     

        // TODO add your handling code here:

      int p =  JOptionPane.showConfirmDialog(null, "Yakin keluar","Konfirmasi",JOptionPane.YES_NO_OPTION,JOptionPane.QUESTION_MESSAGE);

   

if(p == 0){

     System.exit(0);

    }

}

SourceCode JRadio :

private void RB1ActionPerformed(java.awt.event.ActionEvent evt) {                                   

        // TODO add your handling code here:

        RB2.setSelected(false);

        RB4.setSelected(false);

        RB3.setSelected(false);

        RB5.setSelected(false);

        txtJenis.setText(RB1.getText());

        txtJenis.setText("1");

    }                                  

    private void RB2ActionPerformed(java.awt.event.ActionEvent evt) {                                   

        // TODO add your handling code here:

        RB1.setSelected(false);

        RB3.setSelected(false);

        RB4.setSelected(false);

        RB5.setSelected(false);

        txtJenis.setText(RB2.getText());

        txtJenis.setText("2");

    }                                  

    private void RB5ActionPerformed(java.awt.event.ActionEvent evt) {                                   

        // TODO add your handling code here:

        RB2.setSelected(false);

        RB4.setSelected(false);

        RB3.setSelected(false);

        RB1.setSelected(false);

        txtJenis.setText(RB5.getText());

        txtJenis.setText("5");

    }                                  

    private void RB3ActionPerformed(java.awt.event.ActionEvent evt) {                                   

        // TODO add your handling code here:

        RB1.setSelected(false);

        RB2.setSelected(false);

        RB4.setSelected(false);

        RB5.setSelected(false);

        txtJenis.setText(RB3.getText());

        txtJenis.setText("3");

    }                                  

    private void RB4ActionPerformed(java.awt.event.ActionEvent evt) {                                   

        // TODO add your handling code here:

        RB1.setSelected(false);

        RB2.setSelected(false);

        RB3.setSelected(false);

        RB5.setSelected(false);

        txtJenis.setText(RB4.getText());

        txtJenis.setText("4");

    }

SourceCode ComboBox:

private void formWindowActivated(java.awt.event.WindowEvent evt) {                                    

        // TODO add your handling code here:

        Cmbsb.addItem("   ");

        Cmbsb.addItem("ADIDAS");

        Cmbsb.addItem("NIKE");

        Cmbsb.addItem("PUMA");

        Cmbsb.addItem("SPECS");

       

       

       

        for(int x=29;x<=43;x++){

            Cmbukurans.addItem(""+x);}

         for(int x=29;x<=43;x++){

            Cmbukuranf.addItem(""+x);}