kemaren dapet tugas untuk membuat kalkulator pada java,dan saya buat dengan aplikasi JCreator salah satu aplikasi pendukung untuk pemrograman java selain Netbeans.
Tampilan kalkulator yang saya buat
Dan ini source code'y :
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
import java.sql.*;
import javax.swing.table.DefaultTableModel;
public class kalkulatorku extends JFrame implements ActionListener, MouseListener
{
private JPanel pBrg = new JPanel();
private JLabel l1 = new JLabel ("1"),
lSama = new JLabel ("Jumlah "),
lnama = new JLabel ("Dibuat Oleh : Aji Sulistyono");
private JTextField fLayar = new JTextField ();
private JButton btnTambah = new JButton (),
btnKurang = new JButton (),
btnKali = new JButton (),
btnBagi = new JButton (),
btnPersen = new JButton (),
btnKoma = new JButton (),
btnOff = new JButton (),
btnOn = new JButton (),
btnBack = new JButton (),
btnMinus = new JButton (),
btnPangkat = new JButton (),
btnBagi1 = new JButton (),
btn00 = new JButton (),
btn0 = new JButton (),
btn1 = new JButton (),
btn2 = new JButton (),
btn3 = new JButton (),
btn4 = new JButton (),
btn5 = new JButton (),
btn6 = new JButton (),
btn7 = new JButton (),
btn8 = new JButton (),
btn9 = new JButton (),
btnSama = new JButton ();
private String isiLayar = "";
private String snilai1, snilai2, tombol,bukan_angka;
private int hasil;
boolean angka_baru = false;
public kalkulatorku() {
setPreferredSize(new Dimension(500,530));
setTitle("Kalkulator");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
new BorderLayout();
JDesktopPane pBrg = new JDesktopPane();
add(pBrg, BorderLayout.CENTER);
pBrg.setBackground(Color.red);
/* Mengatur letak objek Text Di Container */
fLayar.setBounds (50, 40, 385, 50);
lnama.setBounds (250, 450, 200, 50);
/* Mengatur letak objek Button di Container */
btnOff.setBounds (50, 100, 85, 40);
btnOff.setLabel("Exit");
btnOn.setBounds (350, 100, 85, 40);
btnOn.setLabel("C");
btnTambah.setBounds (350, 160, 85, 40);
btnTambah.setLabel("+");
btnKurang.setBounds (350, 210, 85, 40);
btnKurang.setLabel("-");
btnKali.setBounds (350, 260, 85, 40);
btnKali.setLabel("*");
btnBagi.setBounds (350, 310, 85, 40);
btnBagi.setLabel("/");
btnBack.setBounds (150, 100, 185, 40);
btnBack.setLabel("Backspace");
btnSama.setBounds (50, 360, 185, 90);
btnSama.setLabel("=");
btnSama.setFont(new Font("Times New Roman", 10, 50));
btnKoma.setBounds (250,310, 85, 40);
btnKoma.setLabel(".");
btnPersen.setBounds (350, 360, 85, 40);
btnPersen.setLabel("%");
btnPangkat.setBounds (350, 410, 85, 40);
btnPangkat.setLabel("x^y");
btnBagi1.setBounds (250, 410, 85, 40);
btnBagi1.setLabel("1/x");
btnMinus.setBounds (250, 360, 85, 40);
btnMinus.setLabel("( - )");
//btnAdd.setToolTipText("Tombol Tambah Data");
btn7.setBounds (50, 160, 85, 40);
btn7.setLabel("7");
btn8.setBounds (150, 160, 85, 40);
btn8.setLabel("8");
btn9.setBounds (250, 160, 85, 40);
btn9.setLabel("9");
btn4.setBounds (50, 210, 85, 40);
btn4.setLabel("4");
btn5.setBounds (150, 210, 85, 40);
btn5.setLabel("5");
btn6.setBounds (250, 210, 85, 40);
btn6.setLabel("6");
btn1.setBounds (50, 260, 85, 40);
btn1.setLabel("1");
btn2.setBounds (150, 260, 85, 40);
btn2.setLabel("2");
btn3.setBounds (250, 260, 85, 40);
btn3.setLabel("3");
btn0.setBounds (150, 310, 85, 40);
btn0.setLabel("0");
btn00.setBounds (50, 310, 85, 40);
btn00.setLabel("00");
fLayar.setHorizontalAlignment (JTextField.RIGHT);
/* Objek Button di Non Aktifkan dan di aktifkan */
btnTambah.setEnabled(true);
btnKurang.setEnabled(true);
btnKali.setEnabled(true);
btnBagi.setEnabled(true);
btnSama.setEnabled(true);
btnBack.setEnabled(true);
btnPersen.setEnabled(true);
btnMinus.setEnabled(true);
btnPangkat.setEnabled(true);
btnBagi1.setEnabled(true);
/* Mengatur objek untuk dapat berinteraksi */
btn1.addActionListener (this);
btn2.addActionListener (this);
btn3.addActionListener (this);
btn4.addActionListener (this);
btn5.addActionListener (this);
btn6.addActionListener (this);
btn7.addActionListener (this);
btn8.addActionListener (this);
btn9.addActionListener (this);
btn0.addActionListener (this);
btn00.addActionListener (this);
btnTambah.addActionListener (this);
btnKurang.addActionListener (this);
btnKali.addActionListener (this);
btnBagi.addActionListener (this);
btnSama.addActionListener (this);
btnKoma.addActionListener (this);
btnOff.addActionListener (this);
btnOn.addActionListener (this);
btnBack.addActionListener (this);
btnPersen.addActionListener (this);
btnMinus.addActionListener (this);
btnPangkat.addActionListener (this);
btnBagi1.addActionListener (this);
// Meletakkan seluruh kontrol pada objek panel */
pBrg.add (fLayar);
pBrg.add (btn1);
pBrg.add (btn2);
pBrg.add (btn3);
pBrg.add (btn4);
pBrg.add (btn5);
pBrg.add (btn6);
pBrg.add (btn7);
pBrg.add (btn8);
pBrg.add (btn9);
pBrg.add (btn0);
pBrg.add (btn00);
pBrg.add (btnOff);
pBrg.add (btnOn);
pBrg.add (btnTambah);
pBrg.add (btnKurang);
pBrg.add (btnSama);
pBrg.add (btnKali);
pBrg.add (btnBagi);
pBrg.add (btnKoma);
pBrg.add (btnBack);
pBrg.add (btnPersen);
pBrg.add (btnMinus);
pBrg.add (btnPangkat);
pBrg.add (btnBagi1);
pBrg.add (lnama);
/* Menambahkan objek panel (pBrg) ke container frame */
//getContentPane().add (pBrg);
/* Menampilkan frame ke layar monitor */
pack();
setVisible (true);
setLocationRelativeTo(null);
}
public static void main(String[] args) {
new kalkulatorku().setVisible(true);
}
/* Fungsi jika user melakukan action penekanan tombol Button */
public void actionPerformed (ActionEvent ae) {
Object obj = ae.getSource();
String a = ae.getActionCommand();
if (obj == btn1)
{
isiLayar = isiLayar + "1";
fLayar.setText(isiLayar);
}
if (obj == btn2)
{
isiLayar = isiLayar + "2";
fLayar.setText(isiLayar);
}
if (obj == btn3)
{
isiLayar = isiLayar + "3";
fLayar.setText(isiLayar);
}
if (obj == btn4)
{
isiLayar = isiLayar + "4";
fLayar.setText(isiLayar);
}
if (obj == btn5)
{
isiLayar = isiLayar + "5";
fLayar.setText(isiLayar);
}
if (obj == btn6)
{
isiLayar = isiLayar + "6";
fLayar.setText(isiLayar);
}
if (obj == btn7)
{
isiLayar = isiLayar + "7";
fLayar.setText(isiLayar);
}
if (obj == btn8)
{
isiLayar = isiLayar + "8";
fLayar.setText(isiLayar);
}
if (obj == btn9)
{
isiLayar = isiLayar + "9";
fLayar.setText(isiLayar);
}
if (obj == btn0)
{
isiLayar = isiLayar + "0";
fLayar.setText(isiLayar);
}
if (obj == btn00)
{
isiLayar = isiLayar + "00";
fLayar.setText(isiLayar);
}
if (obj == btnKoma)
{
isiLayar = isiLayar + ".";
fLayar.setText(isiLayar);
}
if (obj == btnTambah)
{
tombol = "tambah";
snilai1 = fLayar.getText();
isiLayar = "";
fLayar.setText(isiLayar);
}
if (obj == btnKurang)
{
tombol = "kurang";
snilai1 = fLayar.getText();
isiLayar = "";
fLayar.setText(isiLayar);
}
if (obj == btnKali)
{
tombol = "kali";
snilai1 = fLayar.getText();
isiLayar = "";
fLayar.setText(isiLayar);
}
if (obj == btnBagi)
{
tombol = "bagi";
snilai1 = fLayar.getText();
isiLayar = "";
fLayar.setText(isiLayar);
}
if (obj == btnPersen)
{
tombol = "persen";
snilai1 = fLayar.getText();
isiLayar = "";
fLayar.setText(isiLayar);
if(tombol == "persen")
{
snilai2 = fLayar.getText();
Float hasil = Float.parseFloat(snilai1) / 100;
String shasil = ""+hasil;
fLayar.setText(shasil);
isiLayar = ("");
}
}
if (obj == btnMinus)
{
isiLayar = isiLayar + "-";
fLayar.setText(isiLayar);
}
if (obj == btnPangkat)
{
tombol = "pangkat";
snilai1 = fLayar.getText();
isiLayar = "";
fLayar.setText(isiLayar);
}
if (obj == btnBagi1)
{
tombol = "bagi1";
snilai1 = fLayar.getText();
isiLayar = "";
fLayar.setText(isiLayar);
if(tombol == "bagi1")
{
snilai2 = fLayar.getText();
Float hasil = 1 / Float.parseFloat(snilai1);
String shasil = ""+hasil;
fLayar.setText(shasil);
isiLayar = ("");
}
}
if(obj == btnOff)
{
this.dispose();
}
if(obj == btnOn)
{
On();
}
if (obj == btnSama)
{
Sama();
}
if (obj == btnBack)
{
{
if (fLayar.getText().length() > 0)
fLayar.setText(fLayar.getText().substring(0, fLayar.getText().length() - 1));
else
JOptionPane.showMessageDialog(null, "Tidak ada angka yang bisa dihapus",
"Kesalahan", JOptionPane.WARNING_MESSAGE);
}
}
}
public void Sama()
{
if(tombol == "tambah")
{
snilai2 = fLayar.getText();
Float hasil = Float.parseFloat(snilai1) + Float.parseFloat(snilai2);
String shasil = ""+hasil;
fLayar.setText(shasil);
isiLayar = ("");
}
if(tombol == "kurang")
{
snilai2 = fLayar.getText();
Float hasil = Float.parseFloat(snilai1) - Float.parseFloat(snilai2);
String shasil = ""+hasil;
fLayar.setText(shasil);
isiLayar = ("");
}
if(tombol == "kali")
{
snilai2 = fLayar.getText();
Float hasil = Float.parseFloat(snilai1) * Float.parseFloat(snilai2);
String shasil = ""+hasil;
fLayar.setText(shasil);
isiLayar = ("");
}
if(tombol == "bagi")
{
snilai2 = fLayar.getText();
Float hasil = Float.parseFloat(snilai1) / Float.parseFloat(snilai2);
String shasil = ""+hasil;
fLayar.setText(shasil);
isiLayar = ("");
}
if(tombol == "pangkat")
{
Double snilai1= Double.valueOf(fLayar.getText());
Double snilai2=Double.valueOf(fLayar.getText());
Double hasil=Double.valueOf(Math.pow(snilai1, snilai2));
String shasil = ""+hasil;
fLayar.setText(shasil);
isiLayar = ("");
}
}
public void On()
{
isiLayar="";
fLayar.setText("0");
}
private void tampil()
{
try
{
}
catch (Exception e)
{
JOptionPane.showMessageDialog(this, "Ada Kesalahan!!!");
}
}
// Fungsi untuk mengkosongkan Objek masukan
void Kosong ()
{
fLayar.setText ("");
fLayar.requestFocus ();
}
}
5 komentar:
class kalkulatorku is public, should be declared in a file named kalkulatorku.java
terimakasih tutorialnya, membantu mengerjakan tugas saya .. ^^ terimakasih
Mase' wes tak coba pake jreator trus muncul gini
calculatoroke is not abstract and does not override abstract method mouseExited(java.awt.event.MouseEvent) in java.awt.event.MouseListener
apa tuh maksudnyanya
@Mas Dhuqi : coba MouseListener nya di hapus, mudah"an bisa :)
mas,mau tanya ini pakai 2 class ya ? hehe. makasih