Membuat Program Pascals Triangle berbasis GUI menggunakan JAVA

segitiga pascal mungkin bagi teman - teman banyak yang mendapatkan tugas membuat segitiga pascal. Bisanya tugas seperti ini diberikan untuk mengetahuin seberapa jauh pemahaman anda tentang pengulangan heheheh
Huhu pertama - tama saya akan membuat diagram alur pascal's triangle
nah seperti dibawah ini

Nah setelah itu Saya mencoba membuat program gui java ehhehehe yang mengoutput segitiga pascal ^_^
petama anda buat sebuah frame lalu design sampai seperti dibawah ini

Setelah itu tambahkan source code yang berwana biru

public class pascalsTriangle extends javax.swing.JFrame {

String a;

int b;

    /** Creates new form pascalsTriangle */
    public pascalsTriangle() {
        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")
    // //GEN-BEGIN:initComponents
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jLabel2 = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jLabel1.setText("Masukan Batas =");

        jTextField1.setBackground(new java.awt.Color(255, 153, 51));
        jTextField1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField1ActionPerformed(evt);
            }
        });

        jTextArea1.setBackground(new java.awt.Color(51, 204, 255));
        jTextArea1.setColumns(20);
        jTextArea1.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N
        jTextArea1.setRows(5);
        jTextArea1.setBorder(new javax.swing.border.MatteBorder(null));
        jScrollPane1.setViewportView(jTextArea1);

        jButton1.setBackground(new java.awt.Color(204, 255, 204));
        jButton1.setText("Proses");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jButton2.setBackground(new java.awt.Color(255, 102, 102));
        jButton2.setText("Clear All");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        jLabel2.setText("Result Pascal's Triangle :");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 102, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 149, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(28, 28, 28)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                            .addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 43, Short.MAX_VALUE))
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 397, Short.MAX_VALUE)
                    .addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 160, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(23, 23, 23)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton1))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jButton2)
                .addGap(15, 15, 15)
                .addComponent(jLabel2)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 183, Short.MAX_VALUE)
                .addContainerGap())
        );

        pack();
    }// //GEN-END:initComponents

    private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jTextField1ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jTextField1ActionPerformed

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed

        prose();

    }//GEN-LAST:event_jButton1ActionPerformed

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed

        clear();

    }//GEN-LAST:event_jButton2ActionPerformed

// nah ini function wt segitiga pascalnya hehehehhe

    public void prose(){

        if (jTextField1.getText().trim().equals(""))

        {

            JOptionPane.showMessageDialog(null, "Field batas is required", "alert", JOptionPane.ERROR_MESSAGE);

        }

        else

        {

        String pascal = "";

        a = jTextField1.getText();

        b = Integer.parseInt(a);

        b = b;

        int y = 0;

        int x = 0;

        while(y <= b){

            int c = 1;

            x = 0;

            while (x <= y){

                pascal = pascal + c + "  ";

                c = c * (y-x)/(x+1);

                x++;

            }

            pascal = pascal + "\n";

            y++;

        }

        jTextArea1.setText(pascal);

        }

       

    }

    public void clear(){

        jTextField1.setText("");

        jTextArea1.setText("");

        JOptionPane.showMessageDialog(null, "Data has empty", "Infromation", JOptionPane.INFORMATION_MESSAGE);

    }

    /**
    * @param args the command line arguments
    */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new pascalsTriangle().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextField jTextField1;
    // End of variables declaration//GEN-END:variables

}