/* 
Calculator_GUI.java
*/

import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

//start of class
public class Calculator_GUI extends JFrame {

//attributes
private JTextField textBox;
private JTextArea answerBox, msgBox;
private JButton resetBtn, suggestBtn;


//constructor
public Calculator_GUI() {
	super("Calculator");
	
	Container container = getContentPane();
	container.setLayout(new FlowLayout()); 

	//text box for input 
	textBox = new JTextField("0", 10);
	textBox.setEditable(true);
	container.add(textBox);
	
	//reset button
	resetBtn = new JButton("RESET");
	container.add(resetBtn);
	
	//register the event handlers
	TextFieldHandler fieldHandler = new TextFieldHandler();
	textBox.addActionListener(fieldHandler);
	
	ButtonHandler btnHandler = new ButtonHandler();
	resetBtn.addActionListener(btnHandler);

	setSize(400, 300);
	setVisible(true);

	
}

//inner class for handling textbox events
private class TextFieldHandler implements ActionListener {
	
	//handle textbox event
	public void actionPerformed(ActionEvent e) {}
}


//inner class for handling button events
private class ButtonHandler implements ActionListener {
	
	//handle button event
	public void actionPerformed(ActionEvent e) {
		String text = textBox.getText();
		JOptionPane.showMessageDialog(null, text);
		textBox.setText("0");

	}
}


//main function
public static void main (String args[]) {

	Calculator_GUI cal = new Calculator_GUI();
	cal.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

} //close brkt for class