Untitled
unknown
java
3 years ago
10 kB
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import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.regex.Pattern;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
public class calculator {
public static void main(String [] args){
JFrame jframe = new JFrame();
jframe.setTitle("Calculator");
jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jframe.setSize(345, 330);
jframe.setResizable(false);
JPanel jpanel = new JPanel();
jpanel.setLayout(null);
jframe.setContentPane(jpanel);
JTextField jt = new JTextField(10);
jt.setBounds(20, 20, 250, 50);
jt.setFont(new Font("Dialog", Font.BOLD, 20));
jt.setEditable(false);
jt.setHorizontalAlignment(JTextField.RIGHT);
jpanel.add(jt);
//Switch
JRadioButton on = new JRadioButton("On");
on.setBounds(270, 25, 50, 20);
jpanel.add(on);
JRadioButton off = new JRadioButton("Off");
off.setBounds(270, 50, 50, 20);
jpanel.add(off);
//numbers
JButton num1 = new JButton("1");
num1.setBounds(20, 80, 50, 40);
jpanel.add(num1);
JButton num2 = new JButton("2");
num2.setBounds(80, 80, 50, 40);
jpanel.add(num2);
JButton num3 = new JButton("3");
num3.setBounds(140, 80, 50, 40);
jpanel.add(num3);
JButton num4 = new JButton("4");
num4.setBounds(20, 130, 50, 40);
jpanel.add(num4);
JButton num5 = new JButton("5");
num5.setBounds(80, 130, 50, 40);
jpanel.add(num5);
JButton num6 = new JButton("6");
num6.setBounds(140, 130, 50, 40);
jpanel.add(num6);
JButton num7 = new JButton("7");
num7.setBounds(20, 180, 50, 40);
jpanel.add(num7);
JButton num8 = new JButton("8");
num8.setBounds(80, 180, 50, 40);
jpanel.add(num8);
JButton num9 = new JButton("9");
num9.setBounds(140, 180, 50, 40);
jpanel.add(num9);
JButton num0 = new JButton("0");
num0.setBounds(200, 180, 50, 40);
jpanel.add(num0);
//operations
JButton plus = new JButton("+");
plus.setBounds(200, 80, 50, 40);
jpanel.add(plus);
JButton min = new JButton("-");
min.setBounds(260, 80, 50, 40);
jpanel.add(min);
JButton div = new JButton("/");
div.setBounds(200, 130, 50, 40);
jpanel.add(div);
JButton mul = new JButton("*");
mul.setBounds(260, 130, 50, 40);
jpanel.add(mul);
JButton clear = new JButton("C");
clear.setBounds(260, 180, 50, 40);
jpanel.add(clear);
JButton eq = new JButton("=");
eq.setBounds(20, 230, 290, 40);
jpanel.add(eq);
//ACTIONS
num1.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
int num = Integer.parseInt(jt.getText());
if(res!=0){
jt.setText("");
}
if(num==0){
jt.setText("1");
}else{
jt.setText(jt.getText()+"1");
}
});
num2.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
int num = Integer.parseInt(jt.getText());
if(res!=0){
jt.setText("");
}
if(num==0){
jt.setText("2");
}else{
jt.setText(jt.getText()+"2");
}
}
});
num3.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
int num = Integer.parseInt(jt.getText());
if(res!=0){
jt.setText("");
}
if(num==0){
jt.setText("3");
}else{
jt.setText(jt.getText()+"3");
}
}
});
num4.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
int num = Integer.parseInt(jt.getText());
if(res!=0){
jt.setText("");
}
if(num==0){
jt.setText("4");
}else{
jt.setText(jt.getText()+"4");
}
}
});
num5.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
int num = Integer.parseInt(jt.getText());
if(res!=0){
jt.setText("");
}
if(num==0){
jt.setText("5");
}else{
jt.setText(jt.getText()+"5");
}
}
});
num6.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
int num = Integer.parseInt(jt.getText());
if(res!=0){
jt.setText("");
}
if(num==0){
jt.setText("6");
}else{
jt.setText(jt.getText()+"6");
}
}
});
num7.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
int num = Integer.parseInt(jt.getText());
if(res!=0){
jt.setText("");
}
if(num==0){
jt.setText("7");
}else{
jt.setText(jt.getText()+"7");
}
}
});
num8.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
int num = Integer.parseInt(jt.getText());
if(res!=0){
jt.setText("");
}
if(num==0){
jt.setText("8");
}else{
jt.setText(jt.getText()+"8");
}
}
});
num9.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
int num = Integer.parseInt(jt.getText());
if(res!=0){
jt.setText("");
}
if(num==0){
jt.setText("9");
}else
jt.setText(jt.getText()+"9");
}
}
});
num0.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
int num = Integer.parseInt(jt.getText());
if(res!=0){
jt.setText("");
}
if(num==0){
jt.setText("0");
}else
jt.setText(jt.getText()+"0");
}
});
clear.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
jt.setText("");
first = 0;
sec = 0;
}
});
plus.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
first = Double.parseDouble(jt.getText());
op = "+";
jt.setText("");
}
});
min.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
first = Double.parseDouble(jt.getText());
op = "-";
jt.setText("");
}
});
div.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
first = Double.parseDouble(jt.getText());
op = "/";
jt.setText("");
}
});
mul.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
first = Double.parseDouble(jt.getText());
op = "*";
jt.setText("");
}
});
eq.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
sec = Double.parseDouble(jt.getText());
if(op.equals("+")){
first = first + sec;
jt.setText(String.valueOf(first));
}else if(op.equals("-")){
first = first - sec;
jt.setText(String.valueOf(first));
}else if(op.equals("/")){
first = first / sec;
jt.setText(String.valueOf(first));
}else if(op.equals("*")){
first = first * sec;
jt.setText(String.valueOf(first));
}
}
});
//set frame true
jframe.setVisible(true);
}
public static double first = 0;
public static double sec = 0;
public static double res = 0;
public static String op = "";
}
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