Thread: HELP WITH MY JAVA GUI

PLEASE HELP ME WITH MY CODE. WHENEVER I INPUT AN INVALID CHARACTER IN THE FIRST TEXT FIELD, THE WHOLE PROGRAM JUST FREEZES. BUT IF I PUT AN INVALID CHARACTER ON THE OTHER TEXT FIELDS IT WORKS JUST FINE. PLEASE HELP ME.

import java.util.InputMismatchException;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class GUIarea extends JFrame {
private JLabel inputradiusc, inputradiuss, inputwidth, inputlength, area1, area2, area3, cl1,cl2,cl3;
private JTextField inputrad1, inputrad2, inputwid, inputleng;
private JButton compute, exit;
private CalculateButtonHandler comhandler;
private ExitButtonHandler exithandler;
private static final int width = 1050;
private static final int length = 500;
public GUIarea() {
inputradiusc = new JLabel ("Enter the radius of the Circle: ", SwingConstants.LEFT );
inputradiuss = new JLabel ("Enter the radius of the Sphere: ", SwingConstants.LEFT );
inputwidth = new JLabel ("Enter the Width of a Rectangle: ", SwingConstants.LEFT );
inputlength = new JLabel ("Enter the Length of a Rectangle: ", SwingConstants.LEFT );
area1 = new JLabel("Area of a Circle: ", SwingConstants.RIGHT);
area2 = new JLabel("Area of a Sphere: ", SwingConstants.RIGHT);
area3 = new JLabel("Area of a Rectangle: ", SwingConstants.RIGHT);
cl1 = new JLabel("");
cl2 = new JLabel("");
cl3 = new JLabel("");
inputrad1 = new JTextField(1);
inputrad2 = new JTextField(1);
inputwid = new JTextField(1);
inputleng = new JTextField(1);
compute = new JButton("Compute");
comhandler = new CalculateButtonHandler();
compute.addActionListener(comhandler);
exit = new JButton("Exit");
exithandler = new ExitButtonHandler();
exit.addActionListener(exithandler);
setTitle("Area Calculator by Miguel Ybera");
Container ybs = getContentPane();
ybs.setLayout(new GridLayout(8, 2));
ybs.add(inputradiusc);
ybs.add(inputrad1);
ybs.add(inputradiuss);
ybs.add(inputrad2);
ybs.add(inputwidth);
ybs.add(inputwid);
ybs.add(inputlength);
ybs.add(inputleng);
ybs.add(area1);
ybs.add(cl1);
ybs.add(area2);
ybs.add(cl2);
ybs.add(area3);
ybs.add(cl3);
ybs.add(compute);
ybs.add(exit);
setSize(width, length);
setVisible(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
private class CalculateButtonHandler implements ActionListener{
public void actionPerformed(ActionEvent asdf) {
double num1 , num2 , num3, num4,
areaofcircle, areaofsphere, areaofrectangle;
int x=1;
do {
try {
num1 = Double.parseDouble(inputrad1.getText());
x=2;
areaofcircle = 3.14*num1*num1;
cl1.setText(""+ String.format("%.2f", areaofcircle));


}
catch(Exception wrong) {
cl1.setText("Invalid");
}
}
while (x ==1);
do {
try {
num2 = Double.parseDouble(inputrad2.getText());
x=2;
areaofsphere = 4*3.14*num2*num2;
cl2.setText(""+ String.format("%.2f", areaofsphere));
}
catch(Exception Exception) {
cl2.setText("Invalid");
}
}
while (x ==1);
do {
try {
num3 = Double.parseDouble(inputwid.getText());
num4 = Double.parseDouble(inputleng.getText());
x=2;
areaofrectangle = num3 *num4;
cl3.setText(""+ String.format("%.2f", areaofrectangle));
}
catch(Exception Exception) {
cl3.setText("Invalid");
}
}
while (x ==1);
}
}
private class ExitButtonHandler implements ActionListener{
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
}
public static void main(String[] args) {
GUIarea graph = new GUIarea();
}

}

if I input an invalid character on the first text field it should display "Invalid" on the botton after "Area of a circle" but it works fine if I place an invalid character on the 2nd 3rd and 4th text field but my 1st textfield has to have the correct input

Please type you code in

format it to easy to read.

[CODE]
import java.util.InputMismatchException;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class GUIarea extends JFrame {
private JLabel inputradiusc, inputradiuss, inputwidth, inputlength, area1, area2, area3, cl1,cl2,cl3;
private JTextField inputrad1, inputrad2, inputwid, inputleng;
private JButton compute, exit;
private CalculateButtonHandler comhandler;
private ExitButtonHandler exithandler;
private static final int width = 1050;
private static final int length = 500;
public GUIarea() {
inputradiusc = new JLabel ("Enter the radius of the Circle: ", SwingConstants.LEFT );
inputradiuss = new JLabel ("Enter the radius of the Sphere: ", SwingConstants.LEFT );
inputwidth = new JLabel ("Enter the Width of a Rectangle: ", SwingConstants.LEFT );
inputlength = new JLabel ("Enter the Length of a Rectangle: ", SwingConstants.LEFT );
area1 = new JLabel("Area of a Circle: ", SwingConstants.RIGHT);
area2 = new JLabel("Area of a Sphere: ", SwingConstants.RIGHT);
area3 = new JLabel("Area of a Rectangle: ", SwingConstants.RIGHT);
cl1 = new JLabel("");
cl2 = new JLabel("");
cl3 = new JLabel("");
inputrad1 = new JTextField(1);
inputrad2 = new JTextField(1);
inputwid = new JTextField(1);
inputleng = new JTextField(1);
compute = new JButton("Compute");
comhandler = new CalculateButtonHandler();
compute.addActionListener(comhandler);
exit = new JButton("Exit");
exithandler = new ExitButtonHandler();
exit.addActionListener(exithandler);
setTitle("Area Calculator by Miguel Ybera");
Container ybs = getContentPane();
ybs.setLayout(new GridLayout(8, 2));
ybs.add(inputradiusc);
ybs.add(inputrad1);
ybs.add(inputradiuss);
ybs.add(inputrad2);
ybs.add(inputwidth);
ybs.add(inputwid);
ybs.add(inputlength);
ybs.add(inputleng);
ybs.add(area1);
ybs.add(cl1);
ybs.add(area2);
ybs.add(cl2);
ybs.add(area3);
ybs.add(cl3);
ybs.add(compute);
ybs.add(exit);
setSize(width, length);
setVisible(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
private class CalculateButtonHandler implements ActionListener{
public void actionPerformed(ActionEvent asdf) {
double num1 , num2 , num3, num4,
areaofcircle, areaofsphere, areaofrectangle;
int x=1;
do {
try {
num1 = Double.parseDouble(inputrad1.getText());
x=2;
areaofcircle = 3.14*num1*num1;
cl1.setText(""+ String.format("%.2f", areaofcircle));


}
catch(Exception wrong) {
cl1.setText("Invalid");
}
}
while (x ==1);
do {
try {
num2 = Double.parseDouble(inputrad2.getText());
x=2;
areaofsphere = 4*3.14*num2*num2;
cl2.setText(""+ String.format("%.2f", areaofsphere));
}
catch(Exception Exception) {
cl2.setText("Invalid");
}
}
while (x ==1);
do {
try {
num3 = Double.parseDouble(inputwid.getText());
num4 = Double.parseDouble(inputleng.getText());
x=2;
areaofrectangle = num3 *num4;
cl3.setText(""+ String.format("%.2f", areaofrectangle));
}
catch(Exception Exception) {
cl3.setText("Invalid");
}
}
while (x ==1);
}
}
private class ExitButtonHandler implements ActionListener{
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
}
public static void main(String[] args) {
GUIarea graph = new GUIarea();
}

}