Kalkulator Anti Mumet V-Dos

package shkalkulator;
 
import java.awt.Color;
import javax.swing.*;
 
/**
     * @author Soni Hendarkanto PTI 4B
     * With Apache NetBeans IDE 16, Belsoft JAVA JDK 19
     * on Linux Mint 21.1 "VERA" Cinnamon Desktop Edition
     * 
     * My github for this project: https://github.com/Soni-Hendar-Kip/SHKalkulator
     * 
     * link tutor:
     * original version from pak dosen rozi
     */
public class NoxKalkulatorVersiDosenRozi extends javax.swing.JFrame {
    String TandaHitung=""; //untuk mewakili simbol operator hitung +-/*
    String LayarAwal; //untuk mewakili layar awal
    boolean FirstClick=false;
    double Angka_ke1 = 0; //untuk mewakili angka pertama yg akan di hitung pada kalkulator
    double Angka_ke2 = 0; //untuk mewakili angka kedua
    double Hasil_Hitung; //untuk mewakili hasil perhitungan
 
    public NoxKalkulatorVersiDosenRozi() {
        initComponents();
    }
 
    public void AturTextLayar(String k){
        LayarAwal = NoxLayar_.getText();
        if(LayarAwal.equals("0")) {
            LayarAwal=LayarAwal.replace("0","");
        }
        if(!TandaHitung.equals("") && FirstClick) {
            NoxLayar_.setText(k);
            FirstClick=false;
        }
        else{
            NoxLayar_.setText(LayarAwal+k);
        }
    }
 
    public void AturWarnaTombolAngka(boolean yes_or_no){
        setBackground(Color.yellow);
    }
 
    public void HilangkanWarnaTombol(boolean yes_or_no){
        NoxBt0_.setBackground(Color.LIGHT_GRAY);
        NoxBt1_.setBackground(Color.LIGHT_GRAY);
        NoxBt2_.setBackground(Color.LIGHT_GRAY);
        NoxBt3_.setBackground(Color.LIGHT_GRAY);
        NoxBt4_.setBackground(Color.LIGHT_GRAY);
        NoxBt5_.setBackground(Color.LIGHT_GRAY);
        NoxBt6_.setBackground(Color.LIGHT_GRAY);
        NoxBt7_.setBackground(Color.LIGHT_GRAY);
        NoxBt8_.setBackground(Color.LIGHT_GRAY);
        NoxBt9_.setBackground(Color.LIGHT_GRAY);
        NoxBtBagi_.setBackground(Color.LIGHT_GRAY);
        NoxBtClear_.setBackground(Color.LIGHT_GRAY);
        NoxBtKali_.setBackground(Color.LIGHT_GRAY);
        NoxBtKoma_.setBackground(Color.LIGHT_GRAY);
        NoxBtKurang_.setBackground(Color.LIGHT_GRAY);
        NoxBtPersen_.setBackground(Color.LIGHT_GRAY);
        NoxBtSamaDengan_.setBackground(Color.LIGHT_GRAY);
        NoxBtTambah_.setBackground(Color.LIGHT_GRAY);
    }
 
    /**
     * 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.
     */                  
 
    private void NoxBt9_ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
 
            AturTextLayar("9");
            HilangkanWarnaTombol(true);
            NoxBt9_.setBackground(Color.GREEN);
 
    }                                       
 
    private void NoxBt6_ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
 
            AturTextLayar("6");
            HilangkanWarnaTombol(true);
            NoxBt6_.setBackground(Color.GREEN);
 
    }                                       
 
    private void NoxBt5_ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
 
            AturTextLayar("5");
            HilangkanWarnaTombol(true);
            NoxBt5_.setBackground(Color.GREEN);
 
    }                                       
 
    private void NoxBt2_ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
 
            AturTextLayar("2");
            HilangkanWarnaTombol(true);
            NoxBt2_.setBackground(Color.GREEN);
 
    }                                       
 
    private void NoxBt3_ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:        
 
            AturTextLayar("3");
            HilangkanWarnaTombol(true);
            NoxBt3_.setBackground(Color.GREEN);
    }                                       
 
    private void NoxBtClear_ActionPerformed(java.awt.event.ActionEvent evt) {                                            
        // TODO add your handling code here:
         NoxLayar_.setText("");
 
         HilangkanWarnaTombol(true);
         NoxBtClear_.setBackground(Color.blue);
    }                                           
 
    private void NoxBtTambah_ActionPerformed(java.awt.event.ActionEvent evt) {                                             
        // TODO add your handling code here:
 
            TandaHitung = "+";
            FirstClick = true;
            Angka_ke1=Double.parseDouble(NoxLayar_.getText());
 
            HilangkanWarnaTombol(true);
            NoxBtTambah_.setBackground(Color.YELLOW);
    }                                            
 
    private void NoxBtKurang_ActionPerformed(java.awt.event.ActionEvent evt) {                                             
        // TODO add your handling code here:
 
        TandaHitung = "-";
        FirstClick = true;
        Angka_ke1 = Double.parseDouble(NoxLayar_.getText());
 
            HilangkanWarnaTombol(true);
            NoxBtKurang_.setBackground(Color.YELLOW);
    }                                            
 
    private void NoxBtKali_ActionPerformed(java.awt.event.ActionEvent evt) {                                           
        // TODO add your handling code here:
 
        TandaHitung = "*";
        FirstClick = true;
        Angka_ke1 = Double.parseDouble(NoxLayar_.getText());
 
            HilangkanWarnaTombol(true);
            NoxBtKali_.setBackground(Color.YELLOW);
    }                                          
 
    private void NoxBtBagi_ActionPerformed(java.awt.event.ActionEvent evt) {                                           
        // TODO add your handling code here:
 
        TandaHitung = "/";
        FirstClick = true;
        Angka_ke1 = Double.parseDouble(NoxLayar_.getText());
 
            HilangkanWarnaTombol(true);
            NoxBtBagi_.setBackground(Color.YELLOW);
    }                                          
 
    private void NoxBtKoma_ActionPerformed(java.awt.event.ActionEvent evt) {                                           
        // TODO add your handling code here:
 
        AturTextLayar("."); //koma dalam inggris menjadi . (titik)
 
        HilangkanWarnaTombol(true);
        NoxBtKoma_.setBackground(Color.YELLOW);
 
    }                                          
 
    private void NoxBtPersen_ActionPerformed(java.awt.event.ActionEvent evt) {                                             
        // TODO add your handling code here:
        JOptionPane.showMessageDialog(null, "sorry belum berfungsi");
    }                                            
 
    private void NoxBtSamaDengan_ActionPerformed(java.awt.event.ActionEvent evt) {                                                 
        // TODO add your handling code here:
        Hasil_Hitung = 0;
        Angka_ke2 = Double.parseDouble(NoxLayar_.getText());
        if (TandaHitung == "+"){
            Hasil_Hitung = Angka_ke1 + Angka_ke2 ;
        }
        else if (TandaHitung == "-"){
            Hasil_Hitung = Angka_ke1 - Angka_ke2 ;
        }
        else if (TandaHitung == "*"){
            Hasil_Hitung = Angka_ke1 * Angka_ke2 ;
        }
        else if (TandaHitung == "/"){
            Hasil_Hitung = Angka_ke1 / Angka_ke2 ;
        }
 
        String SHasil = Double.toString(Hasil_Hitung);
        NoxLayar_.setText(SHasil);
 
        HilangkanWarnaTombol(true);
        NoxBtSamaDengan_.setBackground(Color.RED);
    }                                                
 
    private void NoxBtAbout_ActionPerformed(java.awt.event.ActionEvent evt) {                                            
        // TODO add your handling code here:
    }                                           
 
    private void NoxBt7_ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
 
            AturTextLayar("7");
            HilangkanWarnaTombol(true);
            NoxBt7_.setBackground(Color.GREEN);
 
    }                                       
 
    private void NoxBt8_ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
 
            AturTextLayar("8");
            HilangkanWarnaTombol(true);
            NoxBt8_.setBackground(Color.GREEN);
 
    }                                       
 
    private void NoxBt4_ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
 
            AturTextLayar("4");
            HilangkanWarnaTombol(true);
            NoxBt4_.setBackground(Color.GREEN);
 
    }                                       
 
    private void NoxBt1_ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
 
            AturTextLayar("1");
            HilangkanWarnaTombol(true);
            NoxBt1_.setBackground(Color.GREEN);
 
    }                                       
 
    private void NoxBt0_ActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
            AturTextLayar("0");
            HilangkanWarnaTombol(true);
            NoxBt0_.setBackground(Color.GREEN);
    }                                       
 
    /**
     * @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(NoxKalkulatorVersiDosenRozi.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(NoxKalkulatorVersiDosenRozi.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(NoxKalkulatorVersiDosenRozi.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(NoxKalkulatorVersiDosenRozi.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>
        //</editor-fold>
        //</editor-fold>
        //</editor-fold>
 
        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new NoxKalkulatorVersiDosenRozi().setVisible(true);
            }
        });
    }
 
    // Variables declaration - do not modify                     
    private javax.swing.JButton NoxBt0_;
    private javax.swing.JButton NoxBt1_;
    private javax.swing.JButton NoxBt2_;
    private javax.swing.JButton NoxBt3_;
    private javax.swing.JButton NoxBt4_;
    private javax.swing.JButton NoxBt5_;
    private javax.swing.JButton NoxBt6_;
    private javax.swing.JButton NoxBt7_;
    private javax.swing.JButton NoxBt8_;
    private javax.swing.JButton NoxBt9_;
    private javax.swing.JButton NoxBtAbout_;
    private javax.swing.JButton NoxBtBagi_;
    private javax.swing.JButton NoxBtClear_;
    private javax.swing.JButton NoxBtKali_;
    private javax.swing.JButton NoxBtKoma_;
    private javax.swing.JButton NoxBtKurang_;
    private javax.swing.JButton NoxBtPersen_;
    private javax.swing.JButton NoxBtSamaDengan_;
    private javax.swing.JButton NoxBtTambah_;
    private javax.swing.JTextField NoxLayar_;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel1;
    // End of variables declaration                   
}