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[CODE]
import java.util.InputMismatchException;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class GUIarea extends JFrame {
private JLabel inputradiusc,...

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...

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...