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Module DEMO-33-74DEMO-OOP-33

Announcement Dialog Panel

DEMO-OOP-33 • Object Oriented Programming

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Problem Statement

Create a Swing panel with a text field, button, and label. Clicking the button must update the label and attempt to show a dialog using JOptionPane.

Input Format

Input is given as whitespace-separated values and is used by Main.java to simulate the GUI interaction.

Output Format

Print the final label text returned by the simulation.

Sample Testcases

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Sample #1
Public sample
Input
hello
Output
Announcement: HELLO
Explanation
Input: announcement text = "hello".
Derivation: "hello".toUpperCase() = "HELLO" | "Announcement: " + "HELLO" = "Announcement: HELLO".
Final label text:
Announcement: HELLO
Sample #2
Public sample
Input
notice
Output
Announcement: NOTICE
Explanation
Input: announcement text = "notice".
Derivation: "notice".toUpperCase() = "NOTICE" | "Announcement: " + "NOTICE" = "Announcement: NOTICE".
Final label text:
Announcement: NOTICE

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