I don’t understand what is wrong {//Code To popup an ERROR_MESSAGE DialogJOptionPane.showMessageDialog (null,"A error has occurred.",2122232425"ERROR",26JOptionPane.ERROR_MESSAGE);27282930class Main {3132public static void main(String args[])3334Demo1 f = new Demo1();f.setBounds(200, 200, 400, 300);f.setResizeable(false);f.setVisible (true);}353637383940 import java.awt.*;import java.awt.event.*;import javax.swing.*;1class Demo1 extends JFrame implementsActionListener8.this.setLayout(null);9.10b1 = new JButton("Buttons 1");1112b1.setbounds(130,05,100, 50);1314this.add(b1);1516b1.addActionListener (this);}public void actionPerformed (ActionEventevt){if (evt.getSource()1718%241920b1)H23 4567

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Answered: don’t understand what is wrong

Engineering

Computer Science

don’t understand what is wrong

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

I don’t understand what is wrong

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
1
class Demo1 extends JFrame implements
ActionListener
8.
this.setLayout(null);
9.
10
b1 = new JButton("Buttons 1");
11
12
b1.setbounds(130,05,100, 50);
13
14
this.add(b1);
15
16
b1.addActionListener (this);
}
public void actionPerformed (ActionEvent
evt)
{
if (evt.getSource()
17
18
%24
19
20
b1)
H23 45
67

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