Hello, I was assigned to create a Java Program that outputs a sentence using a d

Question

Hello, I was assigned to create a Java Program that outputs a sentence using a dialog box. Further more, depending on the last character of the sentence, I should also output another dialog box identifying the sentence as exclamatory, declarative, or interrogative. Below is a program I was working on based on the instructions I have mentioned. I do have an idea on what I should be doing, but I feel as if I'm going astray from what I've been instructed on doing. Can you critique the program and provide feedback? Thank you.

import javax.swing.JOptionPane;

public class YourLastNameDialogBox

{

   public static void main(String[] args)
  
   {
       JOptionPane.showMessageDialog(null, "Do you enjoy programming?");
      
       JOptionPane.showMessageDialog(null, "interrogative");
      
       System.exit(0); //Always required when using the JOptionPaneclass
   }

}

Explanation / Answer

// YourLastNameDialogBox.java

import javax.swing.JOptionPane;
import java.util.Scanner;
import javax.swing.*;

public class YourLastNameDialogBox
{
public static void main(String[] args)
{
   // input from user
   JFrame frame = new JFrame("InputDialog");
   String sentence = JOptionPane.showInputDialog(frame, "Input sentence");

JOptionPane.showMessageDialog(null, sentence);
  
// display the type on basis of last character in sentence
if(sentence.charAt(sentence.length()-1) == '?')
   JOptionPane.showMessageDialog(null, "interrogative");
else if(sentence.charAt(sentence.length()-1) == '.')
   JOptionPane.showMessageDialog(null, "declarative");
else if(sentence.charAt(sentence.length()-1) == '!')
   JOptionPane.showMessageDialog(null, "exclamatory");
  
System.exit(0); //Always required when using the JOptionPaneclass
}
}

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