java import javax.swing.*; import java.awt.*; import java.awt.event.*; public class GUIExample implements ActionListener

[answerhappygod]

java
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class GUIExample implements ActionListener{
JTextField width, length;
JButton enter;
JLabel answer;
JCheckBox perimeter,area;
public GUIExample(){
//Create and set up the window.
JFrame frame = new JFrame("GUI - Geometry");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
width = new JTextField("Width");
length = new JTextField("Length");
enter = new JButton("Enter");
answer = new JLabel();
Color purple = new Color(122, 0, 122);
width.setBackground(purple);
width.setForeground(Color.WHITE);
length.setBackground(Color.RED);
//answer.setForeground(Color.CYAN);
width.setBounds(50, 50, 150, 20);
length.setBounds(50, 100, 150, 20);
enter.setBounds(120, 150, 50, 50);
answer.setBounds(80, 200, 150, 20);
enter.addActionListener(this);
perimeter = new JCheckBox("Perimeter");
area = new JCheckBox("Area");
area.setBounds(50,20, 100,20);
perimeter.setBounds(110,20, 100,20);
frame.add(perimeter);
frame.add(area);
frame.add(width);
frame.add(length);
frame.add(enter);
frame.add(answer);
frame.setSize(300,300);
frame.setLayout(null);
frame.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
try {
int a=Integer.parseInt(width.getText());
int b=Integer.parseInt(length.getText());
String result = "";
if (area.isSelected()){
int areaResult = a * b;
result += "Area: ";
result += String.valueOf(areaResult);
result += "\n";
}
if (perimeter.isSelected()) {
int perimeterResult = 2*a + 2*b;
result += "Perimeter: ";
result += String.valueOf(perimeterResult);
result += "\n";
}
answer.setText(result);
} catch (Exception ex) {
answer.setText("Invalid Input");
}
}
public static void main(String[] args) {
GUIExample ex = new GUIExample();
}
Update the GUI to add a third JTextField that will be for the
height. Set the default value to "Height".
Remove the Perimeter Checkbox. Add a JCheckBox for Volume. (Make
sure to name variables in a logical way.)
Change the Area Checkbox to now calculate Surface Area of a
rectangular prism. (Surface area = 2*len*wid + 2*len*h +
2*wid*h)
Update the actionPerformed method to correctly calculate and
display the results based on the input. (Volume = len*wid*h)
Note: Feel free to change any colors! (for fun only- no extra
credit)