Here we have a Java GUI Calculator Source Code for you in which a Java GUI calculator has been created using “swing” and “awt”. The calculator has a simple GUI and performs simple arithmetic operations. The screen shot of the calculator is placed below.
Java GUI Calculator Source Code
You can download the source code for free or learn it from the code below.
Don’t forget to like and share:
Code:
package ptunes;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Scanner;
import javax.script.ScriptEngineManager;
import javax.script.ScriptEngine;
import javax.script.ScriptException;
//import java.util.ActionEvent;
public class gui implements ActionListener {
public gui() {
}
public void actionPerformed (ActionEvent ae ){
// JOptionPane.showMessageDialog(ìHello is pressedî);
}
public static void main(String[] args) {
JFrame j = new JFrame("Buttons");
Container c = j.getContentPane();
//c.setLayout(new BorderLayout());
JPanel p1 = new JPanel();
p1.setLayout(new BorderLayout());
p1.setLayout(new GridLayout(4,4,4,4));
final JTextField t = new JTextField(100);
Font myFontSize = t.getFont().deriveFont(Font.BOLD,50f);
t.setFont(myFontSize);
c.add(t,BorderLayout.NORTH);
final JButton n1 = new JButton("1");
n1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n1.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n2 = new JButton("2");
n2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n2.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n3 = new JButton("3");
n3.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n3.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n4 = new JButton("4");
n4.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n4.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n5 = new JButton("5");
n5.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n5.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n6 = new JButton("6");
n6.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n6.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n7 = new JButton("7");
n7.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n7.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n8 = new JButton("8");
n8.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n8.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n9 = new JButton("9");
n9.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n9.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n10 = new JButton("0");
n10.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n10.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n11 = new JButton("+");
n11.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n11.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n12 = new JButton("-");
n12.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n12.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n13 = new JButton("*");
n13.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n13.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n14 = new JButton("/");
n14.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
String num1 = n14.getText();
String global = t.getText();
global = global.concat(num1);
t.setText(global);
}
});
final JButton n15 = new JButton("=");
n15.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
//String num1 = n15.getText();
String global = t.getText();
//global = global.concat(num1);
ScriptEngineManager mgr = new ScriptEngineManager();
ScriptEngine engine = mgr.getEngineByName("JavaScript");
try {
String s = engine.eval(global).toString();
t.setText(s);
} catch (ScriptException e1) {
e1.printStackTrace();
}
}
});
final JButton n16 = new JButton("C");
n16.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
//String num1 = n16.getText();
String global = t.getText();
global = null;
t.setText(global);
}
});
p1.add(n1);
p1.add(n2);
p1.add(n3);
p1.add(n4);
p1.add(n5);
p1.add(n6);
p1.add(n7);
p1.add(n8);
p1.add(n9);
p1.add(n10);
p1.add(n11);
p1.add(n12);
p1.add(n13);
p1.add(n14);
p1.add(n15);
p1.add(n16);
c.add(p1,BorderLayout.CENTER);
j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
j.setSize(400,400);
j.setVisible(true);
}
}