Rabu, 22 Juni 2011

Kalkulator dengan Java GUI

Assalamu'alaikum pembaca
     Sudah lama saya tidak menulis di blog ini dan sudah lama pula saya tidak membagi ilmu, emtah itu tentang komputer atau tentang dunia islam. Saat ini saya mau share coding pembuatan kalkulator dengan Java GUI. Walaupun coding ini saya bikin sendiri tapi agak ribet menjelaskan codingnya, jadi saya share codingnya aj ya.
     Sebelum itu saya akan memperlihatkan outputnya terlebih dahulu, outputnya seperti gambar disamping. Seperti kita lihat kalkulator yang saya buat dengan java ini sudah dilengkapi dengan operasi trigonomerti, berbeda dengan kalkulator yang pernah saya buat dengan VB.
     Sekarang kita cocokin dulu variable name dari JButton yang akan digunakan, berikut nama variable dari JButton tersebut:

  • tombol 1 => b1
  • tombol 2 => b2
  • tombol 3 => b3
  • tombol 4 => b4
  • tombol 5 => b5
  • tombol 5 => b6
  • tombol 7 => b7
  • tombol 8 => b8
  • tombol 9 => b9
  • tombol 0 => b0
  • tombol . => desimal
  • tombol C =>hapus
  • tombol  -/+ =>negative
  • tombol + =>plus
  • tombol - =>min
  • tombol x => multy
  • tombol / => div
  • tombol ^ => pangkat
  • tombol % => percent
  • tombol 1/x => balik
  • tombol !  => factorial
  • tombol sin => sin
  • tombol cos => cos
  • tombol tan => tan
  • tombol = => res
wow baru tombolnya aj dah panjang ni post, ok kalo dah sama berikut adalah source codenya

baris 1 sampai 10

package guicode1; //nama project

public class calc extends javax.swing.JFrame {
double operator,hasil,bil1;// variable global
    /** Creates new form calc */
    public calc() {
        super("tyocalcjava");// optional
        initComponents();
    }
    @SuppressWarnings("unchecked")

nah kalo pakai Netbeans baris selanjutnya yaitu baris 11 itu udah ada dari sananya dan baris itu di hide agar tidak dirubah, jadi saya tidak perlu menuliskannya disini jadi lanjut ke baris setelahnya aja ya

// dibawah ini untuk tombol angkanya
private void b1ActionPerformed(java.awt.event.ActionEvent evt) {                                  
    txt.setText(txt.getText()+1);
    }                                  
    private void b2ActionPerformed(java.awt.event.ActionEvent evt) {                                  
     txt.setText(txt.getText()+2);
    }                                  
    private void b3ActionPerformed(java.awt.event.ActionEvent evt) {                                   
        // TODO add your handling code here:
         txt.setText(txt.getText()+3);
    }                                 
    private void b4ActionPerformed(java.awt.event.ActionEvent evt) {                                  
     txt.setText(txt.getText()+4);
    }                                 
    private void b5ActionPerformed(java.awt.event.ActionEvent evt) {                                  
    txt.setText(txt.getText()+5);
    }                                 
    private void b6ActionPerformed(java.awt.event.ActionEvent evt) {                                  
    txt.setText(txt.getText()+6);
    }                                 
    private void b7ActionPerformed(java.awt.event.ActionEvent evt) {                                   
     txt.setText(txt.getText()+7);
    }                                 
    private void b8ActionPerformed(java.awt.event.ActionEvent evt) {                                  
       txt.setText(txt.getText()+8);
    }                                 

        private void b9ActionPerformed(java.awt.event.ActionEvent evt) {                                  
        txt.setText(txt.getText()+9);
    }                                 
private void b0ActionPerformed(java.awt.event.ActionEvent evt) {                                  
       txt.setText(txt.getText()+0);
    }                                 
    private void desimalActionPerformed(java.awt.event.ActionEvent evt) {                                       
      txt.setText(txt.getText()+".");
    }                                   
  
//dibawah ini untuk operatornya
    private void plusActionPerformed(java.awt.event.ActionEvent evt) {                                     
       operator=1;
        bil1= Double.parseDouble(txt.getText());
        txt.setText("");
    }                                   
private void minActionPerformed(java.awt.event.ActionEvent evt) {                                   
    operator=2;
        bil1= Double.parseDouble(txt.getText());
        txt.setText("");
    }                                   

    private void multyActionPerformed(java.awt.event.ActionEvent evt) {                                     
          operator=3;
        bil1= Double.parseDouble(txt.getText());
        txt.setText("");
    }                                     

    private void divActionPerformed(java.awt.event.ActionEvent evt) {                                   
         operator=4;
        bil1= Double.parseDouble(txt.getText());
        txt.setText("");
    }                                   
 
  private void resActionPerformed(java.awt.event.ActionEvent evt) {                                    
      if(operator==1){
            hasil= bil1+ Double.parseDouble(txt.getText());
            txt.setText(String.valueOf(hasil));}
 else if (operator==2){
            hasil= bil1- Double.parseDouble(txt.getText());
            txt.setText(String.valueOf(hasil));}
 else if (operator==3){
            hasil= bil1* Double.parseDouble(txt.getText());
            txt.setText(String.valueOf(hasil));}
 else if (operator==4){
            hasil= bil1/ Double.parseDouble(txt.getText());
            txt.setText(String.valueOf(hasil));}
 else if (operator==5){
     if(hasil<0){
         txt.setText("syntax error");
     }
 else{
     hasil= Math.pow(bil1, Double.parseDouble(txt.getText()));
     txt.setText(String.valueOf(hasil));
 }
        }
    }                                  
//di bawah ini menghapus angka
   private void hapusActionPerformed(java.awt.event.ActionEvent evt) {                                     
      txt.setText("");
    }                                    
//di bawah ini operator tambahan
    private void percentActionPerformed(java.awt.event.ActionEvent evt) {                                       
      hasil= Double.parseDouble(txt.getText())/100;
        txt.setText(String.valueOf(hasil));
    }                                      

    private void pangkatActionPerformed(java.awt.event.ActionEvent evt) {                                       
      operator=5;
                bil1=Double.parseDouble(txt.getText());
                txt.setText("");
    }                                       

    private void balikActionPerformed(java.awt.event.ActionEvent evt) {                                     
      hasil = 1/Double.parseDouble(txt.getText());
        txt.setText(String.valueOf(hasil));
    }                                     

    private void factorialActionPerformed(java.awt.event.ActionEvent evt) {                                         
      double a,b;
        b=1;
        hasil=Double.parseDouble(txt.getText());
        for(a=1;a<=hasil;a++){
            b=b*a;
        }
        txt.setText(String.valueOf(b));
    }                                        

    private void negativeActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
        hasil=Double.parseDouble(txt.getText())*-1;
        txt.setText(String.valueOf(hasil));
    }      

//di bawah ini operator trigonometri                                
    private void sinActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:
        if(Double.parseDouble(txt.getText())==30){
            txt.setText("0.5");
        }
 else if(Double.parseDouble(txt.getText())==0){
     txt.setText("0.0");
 }
 else if (Double.parseDouble(txt.getText())==90){
     txt.setText("1.0");
 }
 else{
        hasil = Math.sin(Double.parseDouble(txt.getText())/180*22/7);
   txt.setText(String.valueOf(hasil));
        }
    }
    private void cosActionPerformed(java.awt.event.ActionEvent evt) {
      
         if(Double.parseDouble(txt.getText())==60){
            txt.setText("0.5");
        }
 else if(Double.parseDouble(txt.getText())==90){
     txt.setText("0.0");
 }
 else if (Double.parseDouble(txt.getText())==0){
     txt.setText("1.0");
 }

 else{
        hasil = Math.cos(Double.parseDouble(txt.getText())/180*22/7);
        txt.setText(String.valueOf(hasil));
         }
    }

    private void tanActionPerformed(java.awt.event.ActionEvent evt) {
     
         if(Double.parseDouble(txt.getText())==45){
            txt.setText("1.0");
        }
 else if(Double.parseDouble(txt.getText())==0){
     txt.setText("0.0");
 }
 else if (Double.parseDouble(txt.getText())==90){
     txt.setText("infinity");
 }
 else{
        hasil = Math.tan(Double.parseDouble(txt.getText())/180*22/7);
        txt.setText(String.valueOf(hasil));
         }
    }


    public   static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new calc().setVisible(true);
            }
        });
    }


selamat mencoba

Diposting oleh tyouichi di 21.01
Label:

5 komentar:

Langganan: Posting Komentar (Atom)
007isdead.blogspot.com berbagi ilmu berbagi cerita