Latihan Netbeans

Latihan java membuat form 

Membuat variable
public class JFrame2 extends javax.swing.JFrame {
int total,hargadasar,joging,swim,gym,bayar,kode;
       public JFrame2() {
        initComponents();
    }

Listing / scrip untuk Data Rumah :
    private void clokasiActionPerformed(java.awt.event.ActionEvent evt) {                                      
         kode=clokasi.getSelectedIndex();
        switch(kode)
        {
            case 1:
                hargadasar=2000000;
            break;
          
            case 2:
                hargadasar=3000000;
            break;

             case 3:
                hargadasar=4000000;
            break;

            default:
                hargadasar=0;
        }
        txthargadasar.setText(String.valueOf(hargadasar));
total();
    }



Listing / scrip untuk Fasilitas Rumah :

     checkbox 1 = Joging Track


  private void chk1ActionPerformed(java.awt.event.ActionEvent evt) {                                   
    if(chk1.isSelected()==true)
        joging=100000;
    else
        joging=0;
    txtjoging.setText(String.valueOf(joging));
     total();
    }


    checkbox 2 = Swimming Pool


 private void chk2ActionPerformed(java.awt.event.ActionEvent evt) {                                   
    if(chk2.isSelected()==true)
        swim=200000;
    else
        swim=0;
    txtswim.setText(String.valueOf(swim));
    total();
    }


    checkbox 3 = Gym


private void chk3ActionPerformed(java.awt.event.ActionEvent evt) {                                   

    if(chk3.isSelected()==true)
        gym=300000;
    else
        gym=0;
    txtgym.setText(String.valueOf(gym));
    total();
    }

Listing / scrip untuk Cara Pembayaran :

private void r1ActionPerformed(java.awt.event.ActionEvent evt) {                                 
    bayar=10000;
    txtcarabayar.setText(String.valueOf(bayar));
    total();
    }                                
private void r2ActionPerformed(java.awt.event.ActionEvent evt) {                                 
    bayar=50000;
    txtcarabayar.setText(String.valueOf(bayar));
    total();
    }

Listing / scrip untuk TextBox Total :
 void total()
{
    total=hargadasar+joging+swim+gym+bayar;
    txttotal.setText(String.valueOf(total));
}

Listing / scrip untuk Command Button Bersih :

private void btnbersihActionPerformed(java.awt.event.ActionEvent evt) {                                        
    clokasi.setSelectedIndex(0);
    txthargadasar.setText("");
    txtjoging.setText("");
    txtswim.setText("");
    txtgym.setText("");
    txttotal.setText("");
    txtcarabayar.setText("");
    chk1.setSelected(false);
    chk2.setSelected(false);
    chk3.setSelected(false);
    r1.setSelected(false);
    r2.isDisplayable();
    }

Listing / scrip untuk Command Button Keluar :

private void btnkeluarActionPerformed(java.awt.event.ActionEvent evt) {                                        
            dispose();
    }