GUI window is not appearing

Question

I'm trying to learn to use gui in java using eclipse ide. When I run this code

import javax.swing.JOptionPane;

public class GUI {

    public static void main(String[] args) {
        
        String name = JOptionPane.showInputDialog("Enter your name");
        JOptionPane.showMessageDialog(null, "Hello "+name);
        
    }   
}

all it shows is terminated GUI [Java Application]

How can I fix this issue? screenshot